发明名称 |
LOW TEMPERATURE SINTERED SRTIO3 VARISTOR-CAPACITOR DUAL FUNCTION DEVICE DIELECTRIC COMPOUND |
摘要 |
PURPOSE: A low temperature sintered SrTiO3 varistor-capacitor dual function device dielectric compound is provided to reduce a sintering temperature from 1400°C to 1200°C. CONSTITUTION: A low temperature sintered SrTiO3 varistor-capacitor dual function device dielectric compound is Sr(1-x-y)BaxCayTiO3. The basic material powder is subjected to wet milling for 24 hours after Nb2O5 is added for increasing conductivity of grain. The basic material powder is dried and PVA(poly-vinyl alcohol) of 2 mol% is added, after wet ball milling. Molding is carried out at 100MPa. The molded sample is sintered in a reduction furnace with N2 and H2 gas of 90 to 10 mixture ratio. The sintered sample is re-oxidized at 900°C to oxidize grain boundary and sample surface so as to form a high resist layer. On the re-oxidized sample, outer electrodes are formed by thermally processing Ag electrodes.
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申请公布号 |
KR20020028281(A) |
申请公布日期 |
2002.04.17 |
申请号 |
KR20000059210 |
申请日期 |
2000.10.09 |
申请人 |
KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY |
发明人 |
KIM, SEONG HO;KIM, YUN HO;PARK, JAE GWAN;PARK, JAE HWAN |
分类号 |
H01C7/115;(IPC1-7):H01C7/115 |
主分类号 |
H01C7/115 |
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