| 摘要 |
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 CeF<SUB>3 </SUB>that are for insertion in said matrix without reacting with said metal alloy, and particles of a second solid lubricant such as WS<SUB>2 </SUB>or MoS<SUB>2 </SUB>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.
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