Piezoceramic material, piezoelectric element and non-resonance knock sensor
US8040024B2 · kind B2 · utility
1Cited by
3References
9Claims
0Family size
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Key dates
| Filing date | Mar 4, 2009 |
| Grant date | Oct 18, 2011 |
| Priority date | — |
| Expiry date | Apr 15, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/96
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A piezoceramic material according to an embodiment of the present invention has a composition represented by Pbm{Zr1-x-y-zTixSny(Sb1-nNbn)z}O3 where 1.000≦m≦1.075, 0.470≦x<0.490, 0.020≦y≦0.040, 0<n<1.000 and 0<z≦0.025 and a crystallite size of 30 to 39 nm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.