Abradable seal coating and method of making the same
US5153021A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 17, 1991 |
| Grant date | Oct 6, 1992 |
| Priority date | — |
| Expiry date | Jan 17, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01D11/12
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An abradable seal coating for application to one of a pair of members having relative rotational movement and its method of manufacture are described. The abradable seal coating comprises a two phase composition consisting of a first phase of a metallic alloy matrix of approximately 88% aluminium - 12% silicon, and a second phase of an organic dispersoid material. The first and second phases are codeposited onto a substrate in the ratio 80:20 respectively. The two phases are modified after codisposition onto the substrate by heat treating at a temperature of 450.degree. C. for about sixteen hours. The heat treated coating can be used at elevated temperatures and has improved abradability whilst maintaining its integrity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.