Process for modifying the surface of hard engineering ceramic materials
US5128083A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 7, 1990 |
| Grant date | Jul 7, 1992 |
| Priority date | — |
| Expiry date | May 7, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C26/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for modifying the surface of a hard engineering ceramic material by applying a point or line load to the surface of the hard engineering ceramic material by a second material such as to cause plastic deformation of the hard engineering ceramic material. The second material can be repeatedly traversed across the surface of the hard engineering ceramic material. The process is advantageously applied to a first engineering component fabricated from the hard engineering ceramic material and a second engineering component fabricated from the second material. The second material may also be a hard engineering ceramic material, and may be of the same hardness as the hard engineering ceramic material to be treated. The first and second components can be used in a tribological application and between them define a point or line contact such that in use the second engineering component reshapes the surface of the first engineering component. The first engineering component may comprise a piston ring and the second engineering component may comprise a piston cylinder, or vice-versa.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.