Electrode piezoelectric devices including surface wave devices

Details Electrode piezoelectric devices including surface wave devices Electrode piezoelectric devices including surface wave devices

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.

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