Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1979-04-30
1984-09-18
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310320, 310363, 310364, 310344, 29 2535, H01L 4108
Patent
active
044726520
ABSTRACT:
A piezoelectric device comprising a housing that contains a piezoelectric body bearing aluminum film electrodes. The exposed surfaces of the electrodes bear a passivating layer of amorphous aluminum oxide formed by heating the electrodes at a temperature between 250.degree. and 550.degree. C. in an atmosphere containing free oxygen.
REFERENCES:
patent: 3363119 (1968-01-01), Koneval et al.
patent: 4130771 (1978-12-01), Bottom
Metals Handbook, Vol. 2, 8th Edition, p. 620 (1964).
Kirk-Othmer, Encyclopedia of Chemical Technology, Vol. 2, 3rd Ed., pp. 219 and 225 (1978).
Kirk-Othmer, Encyclopedia of Chemical Technology, 2nd Ed., pp. 48 and 49 (1963), Vol. 2.
Brice John C.
Curran James E.
Budd Mark O.
Franzblau Bernard
Mayer Robert T.
U.S. Philips Corporation
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