WO2006117996A1 - 誘電体セラミック及びその製造方法、並びに積層セラミックコンデンサ - Google Patents
誘電体セラミック及びその製造方法、並びに積層セラミックコンデンサ Download PDFInfo
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- WO2006117996A1 WO2006117996A1 PCT/JP2006/307830 JP2006307830W WO2006117996A1 WO 2006117996 A1 WO2006117996 A1 WO 2006117996A1 JP 2006307830 W JP2006307830 W JP 2006307830W WO 2006117996 A1 WO2006117996 A1 WO 2006117996A1
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- rare earth
- earth element
- dielectric ceramic
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- 239000000919 ceramic Substances 0.000 title claims abstract description 115
- 239000003985 ceramic capacitor Substances 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title description 9
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 121
- 239000013078 crystal Substances 0.000 claims abstract description 103
- 239000000654 additive Substances 0.000 claims abstract description 25
- 230000000996 additive effect Effects 0.000 claims abstract description 25
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 7
- 239000002245 particle Substances 0.000 claims description 100
- 239000000843 powder Substances 0.000 claims description 90
- 239000006104 solid solution Substances 0.000 claims description 51
- 238000004519 manufacturing process Methods 0.000 claims description 18
- 238000010304 firing Methods 0.000 claims description 11
- 239000002994 raw material Substances 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 229910052788 barium Inorganic materials 0.000 claims description 7
- 229910052726 zirconium Inorganic materials 0.000 claims description 6
- 229910052749 magnesium Inorganic materials 0.000 claims description 5
- 229910052748 manganese Inorganic materials 0.000 claims description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 5
- 229910052735 hafnium Inorganic materials 0.000 claims description 4
- 239000000203 mixture Substances 0.000 abstract description 17
- 229910010252 TiO3 Inorganic materials 0.000 abstract 1
- 229910002113 barium titanate Inorganic materials 0.000 abstract 1
- 230000003068 static effect Effects 0.000 abstract 1
- 239000000523 sample Substances 0.000 description 30
- 239000010949 copper Substances 0.000 description 24
- 150000002910 rare earth metals Chemical class 0.000 description 19
- 239000010410 layer Substances 0.000 description 16
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 11
- 239000000047 product Substances 0.000 description 11
- 238000005245 sintering Methods 0.000 description 10
- 238000011156 evaluation Methods 0.000 description 9
- 239000011812 mixed powder Substances 0.000 description 9
- 239000012535 impurity Substances 0.000 description 8
- 230000007547 defect Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 230000007423 decrease Effects 0.000 description 6
- 230000002950 deficient Effects 0.000 description 5
- 238000002149 energy-dispersive X-ray emission spectroscopy Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 238000010298 pulverizing process Methods 0.000 description 5
- 239000002002 slurry Substances 0.000 description 5
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 4
- 239000004020 conductor Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- 239000003989 dielectric material Substances 0.000 description 3
- 230000005684 electric field Effects 0.000 description 3
- 238000000227 grinding Methods 0.000 description 3
- 239000004615 ingredient Substances 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 238000007747 plating Methods 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- 229910052720 vanadium Inorganic materials 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical group CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000012299 nitrogen atmosphere Substances 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 229910052763 palladium Inorganic materials 0.000 description 2
- 230000036961 partial effect Effects 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 238000010532 solid phase synthesis reaction Methods 0.000 description 2
- 238000001308 synthesis method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910001316 Ag alloy Inorganic materials 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910052692 Dysprosium Inorganic materials 0.000 description 1
- 229910052691 Erbium Inorganic materials 0.000 description 1
- 229910052693 Europium Inorganic materials 0.000 description 1
- 229910052688 Gadolinium Inorganic materials 0.000 description 1
- 229910052689 Holmium Inorganic materials 0.000 description 1
- 229910052765 Lutetium Inorganic materials 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 229910001252 Pd alloy Inorganic materials 0.000 description 1
- 229910052777 Praseodymium Inorganic materials 0.000 description 1
- 229910052772 Samarium Inorganic materials 0.000 description 1
- 229910052771 Terbium Inorganic materials 0.000 description 1
- 229910052775 Thulium Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 229910052769 Ytterbium Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229940117702 breo Drugs 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000007606 doctor blade method Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- SWELZOZIOHGSPA-UHFFFAOYSA-N palladium silver Chemical compound [Pd].[Ag] SWELZOZIOHGSPA-UHFFFAOYSA-N 0.000 description 1
- 229910002077 partially stabilized zirconia Inorganic materials 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
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- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
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Definitions
- the present invention relates to a dielectric ceramic, a manufacturing method thereof, and a multilayer ceramic capacitor, and more specifically, a dielectric ceramic satisfying a high dielectric constant and good dielectric constant temperature characteristics, a manufacturing method thereof, and a multilayer ceramic capacitor. It relates to ceramic capacitors. Background art
- a multilayer ceramic capacitor which is the main use of the dielectric ceramic of the present invention, is generally manufactured as follows.
- a ceramic green sheet containing a dielectric ceramic material is prepared.
- the dielectric ceramic material for example, a material mainly composed of BaTiO or (Ba, Ca) TiO is used.
- An internal electrode is formed by applying a conductive material to the surface of the ceramic green sheet with a desired pattern.
- this raw ceramic laminate is fired to obtain a sintered ceramic laminate.
- An internal electrode composed of the above-described conductive material is formed inside the ceramic laminate.
- an external electrode is formed on the outer surface of the ceramic laminate so as to be electrically connected to a specific one of the internal electrodes.
- the external electrode is formed, for example, by applying and baking a conductive paste containing conductive metal powder and glass frit on the outer surface of the ceramic laminate. In this way, a multilayer ceramic capacitor is completed.
- the dielectric ceramic in Patent Document 1 is composed of a main component represented by the general formula ABO and a rare earth.
- the rare earth element concentration distribution in the grains satisfies the condition that the rare earth concentration element in the grain Z is 1Z2 or less, and It is characterized by satisfying the condition that the proportion of crystal particles in which the rare earth element is dissolved in the interior is 20 to 70%.
- Patent Document 1 Japanese Patent Laid-Open No. 2002-274936
- the dielectric ceramic disclosed in Patent Document 1 has a problem that the dielectric constant is as low as about 3000.
- the present invention has been made to solve the above problems, and provides a dielectric ceramic having a sufficiently large dielectric constant and a flat temperature characteristic of the dielectric constant, and a method for manufacturing the dielectric ceramic. It is aimed.
- Another object of the present invention is to provide a multilayer ceramic capacitor using the dielectric ceramic of the present invention, having a small size and a large capacity, and having a good capacity-temperature characteristic. Means for solving the problem
- the dielectric ceramic according to claim 1 of the present invention has a general formula ABO (A is represented by Ba and Ca).
- At least one type including Ba, and B is at least one type including Ti among Ti, Zr, and Hf.
- a grain boundary that occupies a space between the crystal grains and the crystal grains mainly composed of the ABO.
- the cross section of the dielectric ceramic When the cross section of the dielectric ceramic is observed, 55 to 85% of the crystal grains among the crystal grains are present with the rare earth element.
- the region is 90% or more, and 15% to 45% of the crystal grains % Of the number of crystal grains satisfy the condition that the region where the rare earth element is present is less than 10%, and the average concentration of the rare earth element at the grain boundary is equal to that of the rare earth element inside the crystal grain. It is characterized by a molar specific power of less than 2 with respect to the average concentration of rare earth elements in the existing region.
- the dielectric ceramic according to claim 2 of the present invention is the dielectric ceramic according to claim 1, wherein the average concentration of the rare earth element at the grain boundary of the rare earth element inside the crystal grain is The molar ratio to the average concentration of rare earth elements in the existing region is 1 or less.
- the dielectric ceramic according to claim 3 of the present invention is the dielectric ceramic according to claim 1 or 2, wherein the ABO force (BaCa) TiO (where 0 ⁇ x ⁇ 0.03, 1.001
- the additive component contains rare earth elements, Mg, Mn, Cu and Si, and the content of the additive component is 100 mol of ABO.
- Mg is 0.1 mol part or more and 2 mol part or less
- Mn is 0.05 mol part or more and 0.5 mol part or less
- Cu is 0.1 mol part Part or more and 3 parts by mole or less
- Si is 0.2 parts by mole or more and 2 parts by mole or less.
- a method for producing a dielectric ceramic according to the present invention is the method for producing a dielectric ceramic according to any one of claims 1 to 3, comprising: ABO
- the ABO powder and an additive component containing a rare earth element and Cu are mixed and heat-treated.
- a multilayer ceramic capacitor of the present invention includes: a multilayer body in which a plurality of dielectric ceramic layers are stacked; and an internal electrode formed along an interface between the plurality of dielectric ceramic layers. Then, the dielectric ceramic layer has the dielectric ceramic force according to any one of claims 1 to 3. The invention's effect
- the dielectric ceramic is ABO.
- the crystal particles mainly composed of 3 series belovsky toy compound are composed of mixed crystals of crystal particles in which earth element is sufficiently dissolved and crystal particles that are hardly in solution, and rare earth elements are contained in the crystal particles. Since a certain amount or more exists, a dielectric ceramic having a sufficiently large dielectric constant and a flat temperature characteristic of the dielectric constant and a method for manufacturing the dielectric ceramic can be provided.
- the dielectric ceramic of the present invention by using the dielectric ceramic of the present invention, the X5R characteristic of the capacitance temperature characteristic force IA standard can be obtained while being small and large capacity. A satisfactory multilayer ceramic capacitor can be provided.
- FIG. 1 is a cross-sectional view schematically showing a multilayer ceramic capacitor according to an embodiment of the present invention.
- FIG. 2 is a view schematically showing a cross section of the dielectric ceramic of the present invention.
- FIG. 3 is a diagram schematically showing a cross section of a dielectric ceramic in a comparative example of the present invention.
- FIG. 4 is a schematic diagram in one embodiment of a method for producing a dielectric ceramic of the present invention, and shows a state in which additive component particles are attached to ABO powder particles.
- FIG. 5 is a schematic view in one embodiment of a method for producing a dielectric ceramic of the present invention, and shows a state in which a rare earth element is dissolved in ABO powder particles.
- FIG. 6 is a schematic diagram in one embodiment of a method for producing a dielectric ceramic according to the present invention, and shows a state in which the modified ABO powder particles shown in FIG. 5 are pulverized.
- Fig. 1 is a cross-sectional view showing a general multilayer ceramic capacitor.
- a multilayer ceramic capacitor 1 includes a rectangular parallelepiped ceramic multilayer body 2 as shown in FIG.
- the ceramic laminate 2 includes a plurality of laminated dielectric ceramic layers 3 and a plurality of internal electrodes 4 and 5 formed along interfaces between the plurality of dielectric ceramic layers 3.
- the internal electrodes 4 and 5 are arranged opposite to each other with the dielectric ceramic layer 3 interposed therebetween so as to obtain capacitance within the ceramic laminate 2.
- One internal electrode 4 is formed from the left end face 6 of the ceramic laminate 2 to the vicinity of the right end face 7, and the other internal electrode 5 is formed from the right end face 7 to the vicinity of the left end face 6.
- the conductive material of the internal electrodes 4 and 5 is preferably nickel or a nickel alloy, copper or a copper alloy, or silver or a silver alloy, which is low cost.
- External electrodes 8 and 9 are respectively formed on the left and right end faces 6 and 7 of the ceramic laminate 2.
- One internal electrode 4 is connected to the external electrode 8 on the left end face 6, and the other internal electrode is connected to the external electrode 9 on the right end face 7, and the capacitance between the upper and lower internal electrodes 4 and 5 is Like to get.
- the conductive material contained in the external electrodes 8 and 9 includes the internal electrode 4 and The same metal material as in the case of 5 can be used, and metal materials such as silver, palladium, and silver-palladium alloy can also be used.
- the external electrodes 8 and 9 are formed by baking a conductive paste obtained by adding glass frit to a powder of such a metal material.
- the first electrodes 10 and 11 having the same strength as nickel and copper are formed on the surfaces of the external electrodes 8 and 9, respectively, and the upper surfaces thereof are made of solder, tin, and the like.
- Second plating layers 12 and 13 are formed, respectively.
- the dielectric ceramic of the present invention has a general formula ABO (A is a small amount containing Ba of Ba and Ca.
- the composition is composed of a main component consisting of a perovskite toy compound represented by the formula (II) and an added calorie component containing rare earth elements and Cu.
- a perovskite toy compound represented by the formula (II) and an added calorie component containing rare earth elements and Cu.
- an added calorie component containing rare earth elements and Cu for example, BaTiO
- rare earth elements as additive components include La, Ce, Pr, Nd, Sm
- it contains at least one selected from the group consisting of Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu and Y.
- the structure 20 of the dielectric ceramic of the present invention has an ABO as shown in the schematic diagram of FIG.
- the 3 is composed of crystal grains 21 whose main component is 3 and grain boundaries 22 occupying the space between the crystal grains 21.
- the grain boundary here includes a triple point. Further, as long as the object of the present invention is not impaired, there may be some particles having the isotropic precipitate other than the main component.
- the crystal particle 21 has a region where a rare earth element is dissolved and a region where a rare earth element is dissolved! /. Therefore, as shown in FIG. 2, the region where the rare earth element is dissolved in the crystal grain 21 is defined as “rare earth solid solution region Dl”, and the region where the rare earth element is not dissolved is defined as “rare earth insoluble region”. D2 ”. Whether or not the rare earth element is dissolved in the cross section of the crystal particle 21 is determined using FE TEM EDX (transmission electron microscope energy dispersive X-ray analysis). The EDX conditions are a probe diameter of lnm and an acceleration voltage of 200kV.
- the rare earth element may be present in the crystal grain 21 as a solid solution, or may exist at the grain boundary 22 (the rare earth element present at the grain boundary 22 is not shown).
- the molar ratio of the average concentration of the rare earth element at the grain boundary 22 to the average concentration of the rare earth solid solution region D1 is less than 2, and preferably 1 or less. That is, a certain amount of rare earth element needs to be dissolved in crystal grains.
- first crystal particle 21A the number of crystal particles of 15% to 45% of the crystal particles 21 has a rare earth solid solution region D1 of less than 10%
- second crystal grain 21B a crystal grain having a rare earth solid solution region D1 of 10% or more and less than 90% is defined as “third crystal grain”.
- the third crystal particles may be present within a range where the first crystal particles 21A and the second crystal particles 21B satisfy the above-mentioned number ratio.
- the first crystal particles 21A occupying 55 to 85% in number are ABO, which is the main component, for example
- the dielectric constant near 85 ° C which is the upper limit temperature of the X5R characteristic
- the second crystal grains 21B occupying 15% to 45% in number act to suppress a decrease in dielectric constant around 85 ° C.
- the dielectric constant temperature characteristic of the entire dielectric ceramic can be flattened while increasing the dielectric constant at room temperature.
- the dielectric constant is less than 5500, which is not desirable.
- the number ratio of the first crystal particles 21A and the second crystal particles 21B is out of the scope of the present invention as follows. In this case, the above-described effects cannot be expected. [0036] That is, when the number ratio of the first crystal particles 21A exceeds 85% and the number ratio of the second crystal particles 21B is less than 15%, the first crystal particles 21 cause the vicinity of 85 ° C. In addition to the decrease in dielectric constant, the action of suppressing the decrease in dielectric constant of the second crystal grain 21B near 85 ° C is reduced, and the capacitance temperature characteristic of the dielectric ceramic does not satisfy the X5R characteristic. .
- the first crystal particles 21A can improve the dielectric constant. The effect is reduced and the dielectric constant is less than 5500. Similarly, when the number ratio of the first crystal particles 21A is less than 55%, the dielectric constant is less than 5500 even if the number ratio of the second crystal particles 21B satisfies 15 to 45%. .
- the number ratio of the first crystal particles 21 A constituting the crystal structure 20 ′ is less than 55%, and the number ratio of the second crystal particles 21 B is also 15%. If it is less than%, the number ratio of the third crystal particles 21 C in which the rare earth solid solution region D1 is more than 10% and less than 90% increases. In this case, the dielectric constant is less than 5500.
- Cu as an additive component promotes the solid solution of rare earth elements in the ABO powder particles.
- a more preferable dielectric ceramic has a main component ABO of (Ba Ca) TiO (provided that 0
- the additive component to the main component preferably contains rare earth elements, Mg, Mn, Cu and Si.
- the amount of the rare earth element is 0.1 mol part or more and 1 mol part or less
- Mg is 0.1 mol part or more and 2 mol parts or less
- Mn is 0.05 mol part or more and 0.5 mol part or less with respect to 100 mol parts of the main component.
- Cu is 0.1 mol part or more and 3 mol part or less
- Si is 0.2 mol part or more and 2 mol part or less.
- the dielectric ceramic of the present embodiment satisfies the dielectric constant of 5500 or more and the X5R characteristic, and also improves the reliability.
- the CR product when applying a DC electric field of 4kVZm m at 125 ° C is 2500 or more, and in the high-temperature load life test when applying a DC electric field of 8kVZmm at 125 ° C, the defect rate power is 0Z100 after 2000 hours. Become.
- the defect rate after 2000 hours in the high temperature load life test is 1Z100 or more, which is not preferable.
- the defect rate after 1000 hours is 0Z100, which is not a big problem in actual use.
- the dielectric ceramic of this embodiment can be lowered in firing temperature by a sintering aid containing Si.
- the sintering aid is not particularly limited as long as it contains Si, and various sintering aids can be applied.
- a sintering aid in addition to Si, Li, B, Al, Zr, Ti, an alkali metal element, or an alkaline earth metal element can be contained. This sintering aid may be added in the form of glass.
- the dielectric ceramic of the present embodiment may contain various impurities within the range of the /! Range without impairing the object of the present invention.
- impurities include Al, Sr, Zr, Fe, Hf, Na, Co, W, Mo, V, Ni, Zn, Na, Ag, Pd, and Cr. If the main component ABO contains Sf, Sf, Hf, and Zr, they are not treated as impurities.
- ABO powder as the main component and additive powder containing rare earth element and Cu are prepared.
- Ingredient powder particle 32 is mixed and additive ingredient powder particle 32 becomes ABO powder particle 31 A well-dispersed mixed powder 30 is obtained.
- aTiO and (Ba, Ca) TiO powders can be used.
- 3 3 3 3 3 powder is a raw material powder of BaCO, CaCO, and TiO.
- modified ABO powder particles 40 in which rare earth elements are partially dissolved in the ABO powder particles 31 are obtained.
- partial means that the region D1 in which the rare earth element is dissolved is denatured ABO powder 4
- rare earth elements are ABO powder particles 31
- the surface of the modified ABO powder 40 is used for the
- the dissolution region D1 is a region including the particle surface, and the inside thereof is a rare-earth element non-solid solution region D2.
- the rare earth element greatly contributes to the promotion of the solid solution of the rare earth element. If the rare earth element is dissolved in the ABO powder 31 by a method such as heat treatment conditions without including Cu as an additive component, the solid solution region D1 of the rare earth element is appropriately divided by volume.
- the additive component for obtaining the modified ABO powder 40 is a rare earth element which is an essential element.
- Si like Cu, has the effect of promoting solid solution of rare earth elements in ABO powder 40.
- the presence or absence of solid solution in the ABO powder 40 of components other than rare earth elements among the additive components is not particularly limited.
- modified ABO powder particles 40 obtained as described above are pulverized using a mill or the like.
- the ceramic raw material powder 50 schematically shown in FIG. 6 can be obtained.
- the region D1 is not sufficiently pulverized and separated, and the second powder particles 52 are not easily generated.
- the pulverization of the modified ABO powder particle 40 is too strong, the pulverization of the rare earth element non-solid solution region D2
- the second powder particles 52 are pulverized into a form having a small particle size force S and a large number of particles, and solid solution and grain growth occur with the first powder particles 51 during firing, resulting in a solid solution region of rare earth elements of 10%.
- the second crystal grains 21B that are less than this are hardly formed. Therefore, modified ABO powder
- the ceramic raw material powder 50 can be obtained by including the first and second powder particles 51 and 52 and further containing appropriate additive components as necessary.
- the ceramic raw material powder 50 includes a first powder particle 51 having a solid solution region D1 of a rare earth element in a particle cross section of 90% or more, and a first powder particle 51 having a solid solution region D1 of a rare earth element in a particle cross section of less than 10%. 2 powder particles 52.
- the ceramic raw material powder 50 is fired by a conventionally known method, whereby the dielectric ceramic crystal structure 20 of this embodiment (see FIG. 2) can be obtained.
- the second powder particle 52 forms the second crystal particle 21B in FIG. 2 by firing, but the degree of grain growth at that time is smaller than that of the first powder particle 51. .
- the solid solution form of the rare earth element may slightly vary in the firing step, the variation can be kept small by selecting appropriate firing conditions.
- the force showing one embodiment of the method for producing a dielectric ceramic of the present invention is not limited to this embodiment.
- This mixed powder 30 was heat-treated at the temperature shown in Table 1 so that Dy was dissolved in the ABO powder 31.
- MgO and MnO were added so as to be in a molar part, and the mixture was mixed and pulverized in an organic solvent for the time shown in Table 1 to obtain a slurry.
- the mixing and grinding conditions were a ball mill using a cylindrical polypot with a volume of 1L.
- the input amount of media was 500g of partially stabilized zirconia balls with a diameter of 2mm ⁇ , and the input amount of modified ABO powder 40 was 100g.
- Organic solvent is ethanol
- the slurry was formed into a sheet by a doctor blade method to obtain a ceramic green sheet.
- a conductive paste mainly composed of Ni was screen-printed on the surface of the ceramic green sheet to form a conductive paste layer for constituting an internal electrode and dried.
- the ceramic green sheets on which this conductive paste layer was formed were laminated so that the conductive paste layer was drawn and the V and V sides were different from each other to obtain a raw ceramic laminate.
- This raw ceramic laminate was heated in a nitrogen atmosphere at 350 ° C to burn the binder, and then in a reducing atmosphere with an oxygen partial pressure of 10 _1 MPa, which also had H—N—HO gas power.
- the raw ceramic laminate was fired while maintaining a temperature of 1200 ° C. for 2 hours to obtain a ceramic laminate 2.
- a conductive paste containing B-Li-Si-Ba-O-based glass frit and containing Cu as a main component was applied to both end faces of this ceramic laminate 2, and 800 ° C in a nitrogen atmosphere.
- the external electrodes 8 and 9 electrically connected to the internal electrodes 4 and 5 were formed by baking. Furthermore, in order to improve solderability, Ni plating layers 10 and 11 and Sn plating layers 12 and 13 were formed on the external electrodes 8 and 9.
- the outer dimensions of the multilayer ceramic capacitor 1 thus obtained are 3.2 mm in length, 1.6 mm in width, and 1.0 mm in thickness, and the thickness of the ceramic layer 3 interposed between the internal electrodes 4 and 5
- the number of ceramic layers effective for capacitance was 50, and the counter electrode area per ceramic layer was 3.2 mm 2 .
- evaluation samples of sample numbers 1 to 42 were obtained.
- the evaluation sample was cut, and the cross-section of the dielectric ceramic was observed. Twenty crystal particles 21 were extracted from the cross section, and at 20 points in each crystal particle 21, the presence or absence of rare earth elements was measured by FE-TEM-EDX. Under EDX conditions, the probe diameter was lnm and the acceleration voltage was 200kV. This analysis identified rare earth solid solution region D1 and rare earth solid solution region D2. Each of the 20 crystal grains 21 is divided into a second crystal grain 21B having a rare earth solid solution region D1 of less than 10%, a third crystal grain 21C having a ratio of 10% to less than 90%, and a first crystal grain having a ratio of 90% or more. Table 1 shows the results of the number ratio.
- Table 1 shows the result of the ratio between this average value and the average value of the rare earth element concentration in the rare earth solid solution region D1 in the 20 crystal grains 20 described above.
- the dielectric constant ⁇ and dielectric loss tan ⁇ of Sample Nos. 1 to 42 were evaluated under an alternating electric field of lkHz and lVr ms at a temperature of 25 ° C.
- the capacitance at 25 ° C was used as a reference—the rate of change in capacitance in the temperature range of 55 to 85 ° C was measured, and the rate of change in this temperature range was measured. The maximum value was determined.
- the insulation resistance was measured when a DC voltage of 5.6 V was applied for 60 seconds at 125 ° C, and the CR product was determined.
- Samples Nos. 1 2 3 4 5 8 9 and 15 have an average concentration of rare earth elements at grain boundaries 22 that is more than twice the average concentration of rare earth elements in rare earth solid solution region D1 in crystal grains 20.
- the dielectric constant was less than 5500.
- the samples of Sample Nos. 10 and 16 had a low dielectric constant of less than 5500 because the number ratio of the first crystal particles 21A was less than 55%.
- Sample Nos. 6, 7, 12, 13, 14, 20, 21, 27, 28, 30, 34, 35, 40, 41, and 42 have a ratio of the number of second crystal particles 21B of 15 Since it was less than%, the capacitance temperature characteristic force 3 ⁇ 45R characteristic was not satisfied.
- the number ratio of the first crystal particles 21A is less than 55%
- the number ratio of the second crystal particles 21B is less than 15%. Therefore, the dielectric constant was as low as less than 5500.
- Samples within the scope of the present invention have a dielectric constant of 5500 or more, satisfy the capacitance temperature characteristic of the X5R characteristic, exhibit a CR product of 2500 or more, and have a high temperature load characteristic of 2000 hours. It was.
- Samples Nos. 43 and 44 do not contain Cu, so Dy does not sufficiently dissolve in the main component powder during the heat treatment of mixed powder 30, and the sintered ceramic also contains rare earth elements at the grain boundaries.
- the average concentration is more than twice the average concentration of rare earth elements in the crystal grains. It was on. Therefore, the dielectric constant was less than 5500.
- Sample No. 45 was obtained by setting the heat treatment temperature of the mixed powder as high as 1000 ° C.
- the composition of the dielectric ceramic is changed variously, and the influence on various characteristics is observed.
- a multilayer ceramic capacitor was fabricated so that the dielectric ceramic had the composition shown in Table 5 (where n is a positive number for maintaining electrical neutrality).
- the production conditions were the same as in Example 1, and the heat treatment temperature of the mixed powder 30 and the grinding conditions of the slurry were the same as those of Sample No. 18 in Example 1.
- the evaluation items and evaluation conditions were also the same as in Example 1.
- the solid solution form of the rare earth element was the same as Sample No. 18 in Example 1. Table 6 shows the results of various characteristics.
- the defect rate in the high temperature load life test of 2000 hours is also 0/100, which is more preferable.
- the CR product is 3000 or more, which is more preferable.
- a multilayer ceramic capacitor was produced under the same manufacturing conditions as in Example 2 so as to have the same dielectric ceramic composition as Sample No. 102 in Example 2.
- the sintering aid components including 2 were changed as shown in Table 7.
- the mole part of the Si part relative to 100 parts by mole of the main component was f
- the mole part of the other part was g.
- acid oxide powder was used as the additive.
- the firing temperature was also changed as shown in Table 7.
- the evaluation items and evaluation conditions were the same as in Example 2.
- the solid solution form of the rare earth element was the same as the sample number 102 of Example 2.
- Table 8 shows the results of various characteristics.
- the firing temperature could be lowered by using various sintering aids containing various components in addition to Si. Dielectric constant, capacitance temperature characteristics, CR product, and high temperature load characteristics were almost unaffected.
- a multilayer ceramic capacitor was manufactured under the same manufacturing conditions as in Example 2 so as to have the same dielectric ceramic composition as Sample No. 105 in Example 2.
- changes were made in that the types and amounts of impurities shown in Table 9 were added simultaneously with the addition of MgO and MnO. Impurities are added in the form of oxide powder, and the amount is in moles per 100 moles of the main component.
- the evaluation items and evaluation conditions were also the same as in Example 2.
- the solid solution form of the rare earth element was the same as the sample number 105 of Example 2. Table 10 shows the results of various characteristics.
- the firing temperature could be lowered by using various sintering aids containing various components in addition to Si.
- Dielectric constant, capacitance Temperature characteristics, CR product, and high temperature load characteristics were hardly affected.
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Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2681214B2 (ja) * | 1988-05-11 | 1997-11-26 | 堺化学工業株式会社 | セラミック誘電体用組成物、これを用いて得られるセラミック誘電体及びその製造方法 |
JP2002121068A (ja) * | 2000-09-15 | 2002-04-23 | Korea Inst Of Science & Technology | 超微粒チタン酸バリウム誘電体セラミックスの製造方法 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3854454B2 (ja) * | 2000-09-14 | 2006-12-06 | 太陽誘電株式会社 | 誘電体磁器組成物及び磁器コンデンサ |
JP3705141B2 (ja) * | 2001-03-19 | 2005-10-12 | 株式会社村田製作所 | 誘電体セラミック、その製造方法およびその評価方法ならびに積層セラミック電子部品 |
JP4552419B2 (ja) * | 2002-11-29 | 2010-09-29 | 株式会社村田製作所 | 誘電体セラミックおよび積層セラミックコンデンサ |
JP4428187B2 (ja) * | 2004-10-12 | 2010-03-10 | Tdk株式会社 | 誘電体磁器組成物及び電子部品 |
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- 2006-04-13 CN CN2006800006247A patent/CN101006028B/zh active Active
- 2006-04-13 KR KR1020077002829A patent/KR100822178B1/ko active Active
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Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2681214B2 (ja) * | 1988-05-11 | 1997-11-26 | 堺化学工業株式会社 | セラミック誘電体用組成物、これを用いて得られるセラミック誘電体及びその製造方法 |
JP2002121068A (ja) * | 2000-09-15 | 2002-04-23 | Korea Inst Of Science & Technology | 超微粒チタン酸バリウム誘電体セラミックスの製造方法 |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2011079717A (ja) * | 2009-10-09 | 2011-04-21 | Murata Mfg Co Ltd | 誘電体セラミックおよび積層セラミックコンデンサ |
JP2011116630A (ja) * | 2009-11-06 | 2011-06-16 | Tdk Corp | 六方晶系チタン酸バリウム粉末、その製造方法、誘電体磁器組成物および電子部品 |
JP2011184279A (ja) * | 2010-03-11 | 2011-09-22 | Murata Mfg Co Ltd | 誘電体セラミック、及び積層セラミックコンデンサ |
US8526165B2 (en) | 2010-03-11 | 2013-09-03 | Murata Manufacturing Co., Ltd. | Dielectric ceramic and laminated ceramic capacitor |
JPWO2011125543A1 (ja) * | 2010-04-02 | 2013-07-08 | 株式会社村田製作所 | 誘電体セラミックおよびそれを用いた積層セラミックコンデンサ |
WO2012111520A1 (ja) * | 2011-02-14 | 2012-08-23 | 株式会社村田製作所 | 積層セラミックコンデンサ及び積層セラミックコンデンサの製造方法 |
JP2013147358A (ja) * | 2012-01-17 | 2013-08-01 | Tdk Corp | 誘電体磁器組成物および積層セラミックコンデンサ |
JPWO2017073621A1 (ja) * | 2015-10-28 | 2018-08-30 | 京セラ株式会社 | コンデンサ |
JP2021020845A (ja) * | 2019-07-24 | 2021-02-18 | サムソン エレクトロ−メカニックス カンパニーリミテッド. | 誘電体磁器組成物及びこれを含む積層セラミックキャパシタ |
US11854746B2 (en) | 2019-07-24 | 2023-12-26 | Samsung Electro-Mechanics Co., Ltd. | Dielectric ceramic composition and multilayer ceramic capacitor comprising the same |
Also Published As
Publication number | Publication date |
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US20070135295A1 (en) | 2007-06-14 |
TW200706513A (en) | 2007-02-16 |
TWI311550B (ja) | 2009-07-01 |
US7501371B2 (en) | 2009-03-10 |
KR100822178B1 (ko) | 2008-04-16 |
CN101006028A (zh) | 2007-07-25 |
KR20070085205A (ko) | 2007-08-27 |
CN101006028B (zh) | 2010-05-19 |
JP4591448B2 (ja) | 2010-12-01 |
JPWO2006117996A1 (ja) | 2008-12-18 |
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