JP2013254954A - 積層セラミック部品 - Google Patents
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- JP2013254954A JP2013254954A JP2013111746A JP2013111746A JP2013254954A JP 2013254954 A JP2013254954 A JP 2013254954A JP 2013111746 A JP2013111746 A JP 2013111746A JP 2013111746 A JP2013111746 A JP 2013111746A JP 2013254954 A JP2013254954 A JP 2013254954A
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- 239000000919 ceramic Substances 0.000 title claims abstract description 45
- 239000000463 material Substances 0.000 claims abstract description 103
- 239000002245 particle Substances 0.000 claims abstract description 77
- 229910052751 metal Inorganic materials 0.000 claims abstract description 49
- 239000002184 metal Substances 0.000 claims abstract description 49
- 239000000843 powder Substances 0.000 claims abstract description 47
- 239000010419 fine particle Substances 0.000 claims description 64
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 32
- 239000010949 copper Substances 0.000 claims description 13
- 229910052759 nickel Inorganic materials 0.000 claims description 12
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 claims description 11
- 229910002113 barium titanate Inorganic materials 0.000 claims description 11
- 229910044991 metal oxide Inorganic materials 0.000 claims description 11
- 150000004706 metal oxides Chemical class 0.000 claims description 11
- 229910052802 copper Inorganic materials 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052765 Lutetium Inorganic materials 0.000 claims description 5
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical group [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims description 5
- 150000002739 metals Chemical class 0.000 claims description 5
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 5
- 238000010304 firing Methods 0.000 abstract description 5
- 238000005245 sintering Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000007423 decrease Effects 0.000 description 5
- 229910052746 lanthanum Inorganic materials 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003989 dielectric material Substances 0.000 description 2
- 238000000445 field-emission scanning electron microscopy Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 239000003985 ceramic capacitor Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000002003 electrode paste Substances 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000007306 functionalization reaction Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
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- H01G4/00—Fixed capacitors; Processes of their manufacture
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- C04B35/46—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates
- C04B35/462—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates based on titanates
- C04B35/465—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates based on titanates based on alkaline earth metal titanates
- C04B35/468—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates based on titanates based on alkaline earth metal titanates based on barium titanates
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/005—Electrodes
- H01G4/008—Selection of materials
- H01G4/0085—Fried electrodes
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- H01G4/018—Dielectrics
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- H01G4/08—Inorganic dielectrics
- H01G4/12—Ceramic dielectrics
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- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/018—Dielectrics
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- H01G4/12—Ceramic dielectrics
- H01G4/1209—Ceramic dielectrics characterised by the ceramic dielectric material
- H01G4/1218—Ceramic dielectrics characterised by the ceramic dielectric material based on titanium oxides or titanates
- H01G4/1227—Ceramic dielectrics characterised by the ceramic dielectric material based on titanium oxides or titanates based on alkaline earth titanates
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Abstract
【解決手段】本発明は、内部電極層と誘電体層が交互に積層された構造を有し、前記内部電極層は金属粉末の重量に対して0.01〜12重量%の共材を含み、前記共材の平均粒径は前記誘電体層に含まれる誘電体母材の平均粒径に対して30〜50%の大きさを有する積層セラミック部品に関するものである。
本発明の一実施形態によると、高温での焼成時に内部電極層から押し出される共材の粒径と添加量を制御することにより前記内部電極の容量と信頼性を向上した積層セラミック部品を提供することができる。
【選択図】図4
Description
表1のように各組成、粒径及び含量を変化させながら、積層型電子部品(MLCC)を製造した。内部電極層の金属粉末はニッケル金属を使用し、共材はチタン酸バリウムを主成分とし、金属酸化物を副成分として含み、超高容量MLCC(誘電体厚さ0.6μm以下、内部電極0.6μm)を製造した。また、前記製造された超高容量MLCCの容量及び信頼性をBDV(breakdown voltage)の加速寿命で測定し、その結果を以下の表1に示す。
110a、110b、110 誘電体層
122 金属粉末(Ni)
121 共材
111 誘電体微粒子
D(inner) 誘電体層の内部に位置して誘電体微粒子同士が隣接する誘電体微粒子
D(interface) 誘電体層と内部電極層の界面に位置する誘電体微粒子
Claims (12)
- 内部電極層と誘電体層が交互に積層された構造を有し、
前記内部電極層は金属粉末の重量に対して0.01〜12重量%の共材を含み、
前記共材の平均粒径は前記誘電体層に含まれる誘電体母材の平均粒径に対して30〜50%の大きさを有する積層セラミック部品。 - 内部電極層と誘電体層が交互に積層された構造を有し、
前記内部電極層は金属粉末の重量に対して0.01〜12重量%の共材を含み、
前記共材の平均粒径は前記誘電体層に含まれる誘電体母材の平均粒径に対して30〜50%の大きさを有し、
前記誘電体層の誘電体微粒子は層状構造を有する積層セラミック部品。 - 内部電極層と誘電体層が交互に積層された構造を有し、
前記内部電極層は金属粉末の重量に対して0.01〜12重量%の共材を含み、
前記共材の平均粒径は前記誘電体層に含まれる誘電体母材の平均粒径に対して30〜50%の大きさを有し、
前記誘電体層の誘電体微粒子は層状構造を有し、
前記層状構造を有する誘電体微粒子において、前記内部電極層と隣接する界面に位置した前記誘電体微粒子の平均粒径D(interface)は内部電極層と隣接せず誘電体微粒子同士が隣接する誘電体層の内部に位置した前記誘電体微粒子の平均粒径D(inner)より小さい積層セラミック部品。 - 前記D(interface)/D(inner)は0.3〜0.95を満足する請求項3に記載の積層セラミック部品。
- 前記誘電体層の厚さは0.6μm以下である請求項1〜3の何れか一項に記載の積層セラミック部品。
- 前記誘電体微粒子の平均粒径は0.15μm以下である請求項1〜3の何れか一項に記載の積層セラミック部品。
- 前記内部電極層は0.6μm以下の厚さを有する請求項1〜3の何れか一項に記載の積層セラミック部品。
- 前記内部電極層はニッケル(Ni)または銅(Cu)からなる請求項1〜3の何れか一項に記載の積層セラミック部品。
- 前記共材はチタン酸バリウム(BaTiO3)と金属酸化物を含む請求項1〜3の何れか一項に記載の積層セラミック部品。
- 前記金属酸化物の金属はY3+、La3+、Ce3+、Pr3+、Nd3+、Sm3+、Eu3+、Gd3+、Tb3+、Dy3+、Ho3+、Er3+、Tm3+、Yb3+、及びLu3+からなる群から選択される1種以上のランタン族希土類元素である請求項9に記載の積層セラミック部品。
- 前記誘電体層は3〜7層の層状構造を有する請求項2または3に記載の積層セラミック部品。
- 前記誘電体微粒子は球形以外の他の形状で互いに隣接している請求項2または3に記載の積層セラミック部品。
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KR1020120060430A KR101548787B1 (ko) | 2012-06-05 | 2012-06-05 | 적층 세라믹 부품 |
KR10-2012-0060430 | 2012-06-05 |
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JP2021077828A (ja) * | 2019-11-13 | 2021-05-20 | 株式会社村田製作所 | 積層セラミックコンデンサ |
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JP6281502B2 (ja) * | 2014-06-12 | 2018-02-21 | 株式会社村田製作所 | 積層セラミックコンデンサ |
KR102183425B1 (ko) | 2015-07-22 | 2020-11-27 | 삼성전기주식회사 | 적층 세라믹 전자부품 |
CN110171971A (zh) * | 2019-06-24 | 2019-08-27 | 深圳市森世泰科技有限公司 | 陶瓷粘合浆料及多层陶瓷及其制作方法及电子器件 |
US11776744B2 (en) * | 2020-05-19 | 2023-10-03 | Samhwa Capacitor Co., Ltd. | Multilayer ceramic capacitor and manufacturing method thereof |
KR20230068721A (ko) * | 2021-11-11 | 2023-05-18 | 삼성전기주식회사 | 커패시터 부품 및 커패시터 부품의 제조 방법 |
KR20230078084A (ko) * | 2021-11-26 | 2023-06-02 | 삼성전기주식회사 | 적층 세라믹 캐패시터 |
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JP4557472B2 (ja) * | 2001-08-29 | 2010-10-06 | 京セラ株式会社 | 積層セラミックコンデンサ及びその製法 |
JP2005159224A (ja) * | 2003-11-28 | 2005-06-16 | Tdk Corp | 積層セラミックコンデンサ |
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JP2004063912A (ja) * | 2002-07-30 | 2004-02-26 | Kyocera Corp | 積層型電子部品およびその製法 |
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KR20130136760A (ko) | 2013-12-13 |
KR101548787B1 (ko) | 2015-08-31 |
US20130321978A1 (en) | 2013-12-05 |
CN103474237B (zh) | 2016-06-08 |
US9183987B2 (en) | 2015-11-10 |
JP5855605B2 (ja) | 2016-02-09 |
CN103474237A (zh) | 2013-12-25 |
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