JPWO2006067958A1 - 誘電体セラミックおよび積層セラミックコンデンサ - Google Patents
誘電体セラミックおよび積層セラミックコンデンサ Download PDFInfo
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- JPWO2006067958A1 JPWO2006067958A1 JP2006548775A JP2006548775A JPWO2006067958A1 JP WO2006067958 A1 JPWO2006067958 A1 JP WO2006067958A1 JP 2006548775 A JP2006548775 A JP 2006548775A JP 2006548775 A JP2006548775 A JP 2006548775A JP WO2006067958 A1 JPWO2006067958 A1 JP WO2006067958A1
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Abstract
Description
0.995≦k≦1.010、
0≦w<0.04、
0≦x≦0.04、
0≦y≦0.10、
0≦z≦0.05、
0.015≦m≦0.035、
0.015≦n≦0.035、
0.01≦p≦1.0、
0.5≦q≦2.5、および
0.01≦r≦5.0
の範囲内にあり、aは、3からの偏差に対し前記主成分が電気的に中性であるように選択される値である。
2 積層体
3 誘電体セラミック層
4,5 内部電極
8,9 外部電極
0.995≦k≦1.010、
0≦w<0.04、
0≦x≦0.04、
0≦y≦0.10、
0≦z≦0.05、
0.015≦m≦0.035、
0.015≦n≦0.035、
0.01≦p≦1.0、
0.5≦q≦2.5、および
0.01≦r≦5.0
の範囲内にあり、aは、3からの偏差に対し前記主成分が電気的に中性であるように選択される値である。
0.995≦k≦1.010、
0≦w<0.04、
0≦x≦0.04、
0≦y≦0.10、
0≦z≦0.05、
0.015≦m≦0.035、および
0.015≦n≦0.035
の範囲内にある。
誘電体セラミックの出発原料として、高純度のBaCO3 、CaCO3 、SrCO3 、TiO2 、ZrO2 、HfO2 、Gd2 O3 およびMgCO3 の各粉末を用意した。
誘電体セラミックの出発原料として、実験例1において用意したものに加えて、Re2 O3 粉末を用意した。そして、実験例1の場合と同様の方法によって、表3に示すモル比率をもって、主成分粉末を合成した。次いで、この主成分粉末に、表3に示すモル比率をもって、MnCO3 、SiO2 およびCuOの各粉末を配合するとともに、表3に示すRe種およびモル比率のRe2 O3 粉末を配合し、これらを混合することによって、各試料に係る誘電体セラミック原料粉末を得た。
実験例3は、製造方法の違いによる試料の性状または特性への影響を調査しようとして実施したものである。
次に、試料3aについて、実験例1において試料3について行なったのと同様の方法にて、「平均故障時間」を求めた。その結果が表7に示されている。なお、表7には、比較を容易にするため、表2に示した試料3についての「平均故障時間」も併せて示されている。
Claims (4)
- 一般式:100(Ba1-w-x-m Caw Srx Gdm )k (Ti1-y-z-n Zry Hfz Mgn )O3+a +pMnO2 +qSiO2 +rCuOで表される組成を有する、誘電体セラミック。
ただし、前記一般式中、(Ba1-w-x-m Caw Srx Gdm )k (Ti1-y-z-n Zry Hfz Mgn )O3+a が主成分であり、
k、w、x、y、z、m、n、p、qおよびrは、単位をモルとし、それぞれ、
0.995≦k≦1.010、
0≦w<0.04、
0≦x≦0.04、
0≦y≦0.10、
0≦z≦0.05、
0.015≦m≦0.035、
0.015≦n≦0.035、
0.01≦p≦1.0、
0.5≦q≦2.5、および
0.01≦r≦5.0
の範囲内にあり、
aは、3からの偏差に対し前記主成分が電気的に中性であるように選択される値である。 - 前記主成分100モルに対して、副成分として、Re2 O3 (Reは、Y、Sm、Eu、Tb、Dy、Ho、Er、TmおよびYbの中から選ばれる少なくとも1種)を0.50モル以下さらに含む、請求項1に記載の誘電体セラミック。
- 複数の積層された誘電体セラミック層および複数の前記誘電体セラミック層間の特定の界面に沿いかつ積層方向に重なり合った状態で形成された複数の内部電極を含む、積層体と、前記内部電極の特定のものに電気的に接続されるように前記積層体の外表面上に形成された外部電極とを備え、前記誘電体セラミック層は、請求項1または2に記載の誘電体セラミックからなる、積層セラミックコンデンサ。
- 前記内部電極は、卑金属を主成分として含む、請求項3に記載の積層セラミックコンデンサ。
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JP2004373168 | 2004-12-24 | ||
PCT/JP2005/022346 WO2006067958A1 (ja) | 2004-12-24 | 2005-12-06 | 誘電体セラミックおよび積層セラミックコンデンサ |
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EP (1) | EP1829842A4 (ja) |
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DE112006001440B4 (de) * | 2005-06-10 | 2010-06-02 | Murata Manufacturing Co. Ltd. | Dielektrische Keramik und Vielschicht-Keramikkondensator |
JP5025570B2 (ja) * | 2008-04-24 | 2012-09-12 | 京セラ株式会社 | 積層セラミックコンデンサ |
WO2010013414A1 (ja) * | 2008-07-29 | 2010-02-04 | 株式会社村田製作所 | 積層セラミックコンデンサ |
WO2010047181A1 (ja) | 2008-10-21 | 2010-04-29 | 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 |
KR101015259B1 (ko) * | 2010-08-19 | 2011-02-16 | 주식회사 튜풀테크놀러지 | 전기 에너지 개선 장치 및 그 제조방법 |
JP2012248622A (ja) * | 2011-05-26 | 2012-12-13 | Taiyo Yuden Co Ltd | チップ状電子部品 |
TWI725600B (zh) * | 2019-10-31 | 2021-04-21 | 華新科技股份有限公司 | 電極膏、電極、包含其之陶瓷電子元件及陶瓷電子元件之製法 |
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JP2005187296A (ja) * | 2003-12-26 | 2005-07-14 | Murata Mfg Co Ltd | 誘電体セラミック組成物及び積層セラミックコンデンサ |
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DE69532235T2 (de) * | 1994-10-19 | 2004-09-16 | Tdk Corp. | Keramischer mehrschicht-chipkondensator |
EP0734031B1 (en) * | 1995-03-24 | 2004-06-09 | TDK Corporation | Multilayer varistor |
SG65086A1 (en) * | 1997-07-23 | 1999-05-25 | Murata Manufacturing Co | Dielectric ceramic composition and monolithic ceramic capacitor using same |
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JPH04349168A (ja) * | 1991-05-27 | 1992-12-03 | Tdk Corp | セラミック誘電体材料、積層セラミックコンデンサおよび積層セラミックコンデンサの経時劣化防止方法 |
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WO2006067958A1 (ja) | 2006-06-29 |
TW200635874A (en) | 2006-10-16 |
EP1829842A4 (en) | 2011-03-23 |
JP4548423B2 (ja) | 2010-09-22 |
US7626803B2 (en) | 2009-12-01 |
KR100859264B1 (ko) | 2008-09-18 |
US20070236865A1 (en) | 2007-10-11 |
TWI290913B (en) | 2007-12-11 |
KR20070070260A (ko) | 2007-07-03 |
CN100519474C (zh) | 2009-07-29 |
EP1829842A1 (en) | 2007-09-05 |
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