Stack-type piezoelectric element and process for production ther

Details Stack-type piezoelectric element and process for production ther Stack-type piezoelectric element and process for production ther

1992-07-15

1993-08-03

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310366, 310363, 310364, H01L 4108

Patent

active

052332608

ABSTRACT:
In an overall stacked piezoelectric element, the material for the electrode was selected from aluminum, nickel and copper each alone or alloys based on aluminum, nickel or copper, and further the parts of the electrodes which contact with molding resin on the side face of the stacked body and the parts which have to be insulated from the lead-out terminals were subjected to an oxidation or nitriding treatment. As the result, an improved element was obtained which is of a high reliability, suited to low voltage operation and suffers no short-circuit of the electrodes even when water permeates to the side face of the stacked body during operation in a humid atmosphere.

REFERENCES:
patent: 2633543 (1953-03-01), Howatt
patent: 3635016 (1972-01-01), Benson
patent: 4472652 (1984-09-01), Brice et al.
patent: 4845399 (1989-07-01), Yasuda et al.

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