Piezoelectric ceramic composition for actuators
US4882078A · kind A · utility
7Cited by
2References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 2, 1988 |
| Grant date | Nov 21, 1989 |
| Priority date | — |
| Expiry date | Dec 2, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N30/853
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A piezoelectric ceramic composition for actuators, which consists essentially of a composite of perovskite compounds represented by the formula EQU Pb.sub.(1-x) La.sub.x [z{(Zn.sub..alpha. Mg.sub.(1-.alpha.))1/3Nb.sub.2/3 }+(1-z){Zr.sub.y Ti.sub.(1-y) }].sub.(1-x/4) O.sub.3 wherein 0.03.ltoreq.x.ltoreq.0.07, 0.50.ltoreq.y.ltoreq.0.65, o<z<0.20, and 0<.alpha.<1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.