Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1992-02-20
1994-06-28
Dougherty, Thomas M.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310364, 310346, H01L 4108
Patent
active
053250125
ABSTRACT:
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.
REFERENCES:
patent: 2430013 (1947-11-01), Hansell
patent: 3230503 (1966-01-01), Elliot et al.
patent: 3243792 (1966-03-01), Hamilton
patent: 3441754 (1969-04-01), Heny
patent: 3573511 (1971-04-01), Noren
patent: 3683211 (1972-08-01), Perlman et al.
patent: 3740822 (1973-06-01), Singleton
patent: 3891873 (1975-06-01), Yanagasawa et al.
patent: 4075364 (1978-02-01), Panzera
patent: 4109031 (1978-07-01), Marscher
patent: 4111572 (1978-09-01), Noone
patent: 4297607 (1981-10-01), Lynnworth et al.
patent: 4338300 (1982-07-01), Erickson et al.
patent: 4381469 (1983-04-01), Ogawa et al.
patent: 4433264 (1984-02-01), Nishiyama et al.
patent: 4445066 (1984-04-01), Nishiyama et al.
patent: 4468582 (1984-08-01), Fujiwara et al.
patent: 4490641 (1984-12-01), Takeuchi et al.
patent: 4551647 (1985-11-01), Day
patent: 4609427 (1986-09-01), Inamoto et al.
patent: 4769882 (1988-09-01), Rosen et al.
patent: 4804007 (1989-02-01), Bran
patent: 4825117 (1989-04-01), Thomas et al.
patent: 4890783 (1990-01-01), Li
patent: 5161728 (1992-11-01), Li
Kokura Satoshi
Okamura Hisanori
Sato Ichiya
Yanagibashi Minoru
Yoneyama Takao
Dougherty Thomas M.
Hitachi Engineering &Service Co., Ltd.
Hitachi Ltd
Hitachi Material Engineering, Ltd.
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