Powder mixture suitable for sintering to form a self-lubricating solid material
US7816307B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jan 11, 2006 |
| Grant date | Oct 19, 2010 |
| Priority date | — |
| Expiry date | Sep 7, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2030/06
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention relates to a novel self-lubricating solid material; to a method of preparing such a material from a powder mixture; to said powder mixture; and to mechanical parts made of said novel material. Said powder mixture comprises a powder of a metal alloy that is a precursor for the matrix of said material, particles of a first solid lubricant such as CeF3 that are for insertion in said matrix without reacting with said metal alloy, and particles of a second solid lubricant such as WS2 or MoS2 for reacting with a component of said metal alloy during sintering of the powder to form a lubricating phase. Said material can be used for fabricating a bushing that is to receive a root of a variable-pitch vane of an airplane turbojet compressor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.