Process for the preparation of ceramic materials free from auto-adhesion under and during aging
US5624625A · kind A · utility
2Cited by
12References
5Claims
0Family size
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Key dates
| Filing date | Jun 7, 1995 |
| Grant date | Apr 29, 1997 |
| Priority date | — |
| Expiry date | Jun 7, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2111/92
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Process for the preparation of ceramic materials for parts having friction surfaces subject to friction and free from auto/self-adhesion under stress or during aging. A precursor of the ceramic undergoes successive operations of pressing, sintering, polishing the surface obtained, cleaning the solid gangue resulting from the polishing, roasting in the presence of oxygen, and a doping treatment for increasing the dielectric susceptibility and homogeneity of the ceramic material adjacent the friction surfaces and to increase the mobility of the charges.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.