Process for producing an alumina-zirconia composite sintered material
US4829028A · kind A · utility
16Cited by
13References
8Claims
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Key dates
| Filing date | Dec 22, 1987 |
| Grant date | May 9, 1989 |
| Priority date | — |
| Expiry date | Dec 22, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B35/119
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Alumina-zirconia composite sintered materials having sufficient high-temperature strength and thermal shock resistance as well as excellent mechanical strength are made by mixing Bayer alumina and/or bauxite as an alumina and baddeleyite and/or zircon sand as a zirconia material in amounts of 50 to 95% by weight of alumina, the balance being zirconia, respectively, subjecting the mixture to heating, melting and quenching, grinding the resulting solid to an average grain size of 10 .mu.m or smaller, and subjecting the resulting powder to molding and sintering.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.