Stack-type piezoelectric element and process for production thereof
US5233260A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 15, 1992 |
| Grant date | Aug 3, 1993 |
| Priority date | — |
| Expiry date | Jul 15, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/42
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.