Multi-layer ceramic capacitor material with ultrahigh dielectric constant and temp stability and its preparing process |
Title： |
| Multi-layer ceramic capacitor material with ultrahigh dielectric constant and temp stability and its preparing process |
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Application Number： |
02125720 |
Application Date： |
2002/08/14 |
Announcement Date： |
2003/02/19 |
Pub. Date： |
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Publication Number： |
1397957 |
Announcement Number： |
1172321 |
Grant Date： |
2004-10-20 |
Granted Pub. Date： |
2004-10-20 |
ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
C04B 35/468, C04B 35/622, H01B 3/12, H01G 4/12 |
Applicant(s)： |
Tsinghua Univ |
Inventor(s)： |
Wang Xiaohui, hen Renzheng, Gui Zhilun |
Key Words： |
Multi-layer, ceramic capacitor material, ultrahigh dielectric constant, temp stability |
Abstract： |
This invention discloses a multi-layer ceramic capacitor material with superhigh dielectric constant and stable temp and its preparation method with the main components of barium titanate, metal powder and secondary additives of Co oxide, Nb oxide and rare earth oxide. Barium titanate is prepared by solid phase synthesis and chemical synthesis mixed with metal powders and secondary additives, formed under pressure and sintered to multi-layer ceramic capacitor materials greatly reducing temp of synthesis and finish without adding combustion adjuvant with the controlled room temp dielectric constant of the material of 4000-42000, tolerant variety of less than and equal to minus or plus 15% and sintered temp under 128 deg.C. |
Claim： |
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Priority： |
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PCT： |
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LegalStatus： |
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