Ceramic sintered body
US8927447B2 · kind B2 · utility
2Cited by
1References
3Claims
0Family size
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Key dates
| Filing date | Jun 10, 2013 |
| Grant date | Jan 6, 2015 |
| Priority date | — |
| Expiry date | Jun 10, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/268
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A ceramic sintered body includes tungsten carbide, zirconia, and alumina. The content of the tungsten carbide is 20 to 50 vol %, and the content of the zirconia is 5 to 25 vol %. The crystal phase of the zirconia is a tetragonal crystal or a mixture of tetragonal and monoclinic crystals. The ceramic sintered body does not substantially include Ti compounds. The average particle diameter of the tungsten carbide, the average particle diameter of the zirconia, and the average particle diameter of the alumina are all 1 μm or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.