发明名称 |
Bonded type piezoelectric apparatus, method for manufacturing the same and bonded type piezoelectric element |
摘要 |
The features of the present invention are 1) to apply metallization on the bonding surface of a piezoelectric ceramic with a metal likely to react with the piezoelectric ceramic material, 2) when the piezoelectric ceramic material is soldered on the bonding surface, to apply metallization with a metal likely to react with the solder material, 3) to provide between the metallizing layers formed in 1) and 2) a metallizing layer including metal which prevents reaction between the metals and their diffusion, 4) to use a mounting member for the piezoelectric ceramic which has substantially the same thermal expansion coefficient as the piezoelectric ceramic in non-polarization condition and 5) to solder in the non-polarization condition and thereafter to polarize. As the result, a bonded type piezoelectric apparatus with a high reliability or with a broad application temperature range near from the absolute zero temperature to the Curie point of the piezoelectric element, and a method of manufacturing the same are provided.
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申请公布号 |
US5325012(A) |
申请公布日期 |
1994.06.28 |
申请号 |
US19920837977 |
申请日期 |
1992.02.20 |
申请人 |
HITACHI, LTD;HITACHI MATERIAL ENGINEERING, LTD.;HITACHI ENGINEERING SERVICE CO., LTD. |
发明人 |
SATO, ICHIYA;YONEYAMA, TAKAO;OKAMURA, HISANORI;KOKURA, SATOSHI;YANAGIBASHI, MINORU |
分类号 |
H01L41/09;H01L41/22;(IPC1-7):H01L41/08 |
主分类号 |
H01L41/09 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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