Piezoelectric/electrostrictive porcelain composition, piezoelectric/electrostrictive article, and piezoelectric/electrostrictive film type element
US7477004B2 · kind B2 · utility
4Cited by
2References
12Claims
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Key dates
| Filing date | Sep 22, 2005 |
| Grant date | Jan 13, 2009 |
| Priority date | — |
| Expiry date | Jan 16, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/3294
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A piezoelectric/electrostrictive porcelain composition which exhibits superior piezoelectric/electrostrictive characteristics without containing lead (Pb) is provided. A main component of the piezoelectric/electrostrictive composition is a binary solid solution represented by the general formula (1): (1−n)(Ag1−a−b−cLiaNabKc)(Nb1−x−y−zTaxSbyVz)O3+nM1M2O3; wherein 0≦a≦0.2, 0≦b≦0.95, 0≦c≦0.95, 0<(1−a−b −c)≦1, 0≦x≦0.5, 0≦y≦0.2, 0≦z≦0.2, 0≦(y+z)≦0.3, 0≦n≦0.2, and wherein M1 and M2 are combinations of metal which satisfy pretermined conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.