Ceramic material of middle-low temp. sintered temp stable type multirayer ceramic capacitor
Title:
Ceramic material of middle-low temp. sintered temp stable type multirayer ceramic capacitor
Application Number:
200410090868
Application Date:
2004/11/16
Announcement Date:
2005/06/08
Pub. Date:
Publication Number:
1623955
Announcement Number:
Grant Date:
Granted Pub. Date:
ApplicationType:
Invention
State/Country:
11[China|beijing]
IPC:
C04B 35/468, C04B 35/63
Applicant(s):
Tsinghua Univ.
Inventor(s):
Wang Xiaohui, Chen Renzheng, Ma Chao
Key Words:
Ceramic material, middle-low temp. sintered, temp stable type, multirayer ceramic capacitor
Abstract:
A ceramic material used for X7R-model multi-layer ceramic capacitor with medium or low sinter temp and high temp stability is prepared from barium titanate and the additive chosen from cobalt oxide and niobium oxide, or their compound, yttrium oxide, RE oxide, Ag, zinc oxdie and boron oxide, or their compound. It has dielectric constant of 1800-5600, capacitance-temp variation rate less than +/-15%, and sinter temp of 900-1150 deg.C.
Claim:
Priority:
PCT:
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2008-4-17
  Selected patents owned by Tsinghua University filed in 2005 are loaded.
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