Copper-based sliding material and method for producing the same
AssigneeTaiho Kogyo Co., Ltd.
InventorsEiji Asada, Takashi Tomikawa, Tatsuhiko Fukuoka
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Abstract
The sintered sliding material according to the present invention consists of from 0.1 to 10% by of graphite, from 1 to 7% by of alumina, and balance of copper, and occasionally at least one member selected from the group consisting of from 1 to 10% of Sn and from 1 to 30% of Pb, and/or not more than 1% of P, and includes the alumina dispersed in the copper matrix. The alumina is held by the copper matrix so that the particles of alumina are not separated from the material during sliding under a boundary lubricating condition.
Claims34
A sintered sliding material consisting of from 1 to 10% by weight of graphite, from 0.1 to 7% by weight of alumina, and balance of copper as a matrix, characterized in that the alumina is dispersed in the copper matrix.
A sintered sliding material consisting of from 1.0 to 10% by weight of graphite, from 1 to 7% by weight of alumina, at least one member selected from the group consisting of from 1 to 10% by weight of Sn and from 1 to 30% by weight of Pb, and balance of copper as a matrix, characterized in that the alumina is dispersed in the copper matrix.
A sintered sliding material consisting of from 1 to 10% by weight of graphite, from 0.1 to 7% by weight of alumina, at least one member selected from the group consisting of from 1 to 10% by weight of Sn and from 1 to 30% by weight of Pb, not more than 1% by weight of P, and balance of copper as a matrix, characterized in that the alumina is dispersed in the copper matrix.
A sintered sliding material consisting of from 1 to 10% by weight of graphite, from 0.1 to 7% by weight of alumina, not more than 1% by weight of P, and balance of copper as a matrix, characterized in that the alumina is dispersed in the copper matrix.
A method for producing a sliding material comprises:
- an alumina-dispersing step for blending an alumina powder into copper powder and dispersing the alumina powder in the matrix of copper, thereby forming a copper-alumina blended powder;
- a graphite-blending step for mixing graphite powder with the copper-alumina blended powder;
- a spraying step for spraying the graphite-mixed powder on a substrate;
- and, a sintering step for sintering the mixed powder on the substrate to bond the mixed powder and substrate.
A method for producing a sliding material comprises:
- an alumina-dispersing step for blending an alumina powder into copper powder and dispersing the alumina powder in the matrix of copper, thereby forming a copper-alumina blended powder;
- an alloying step for blending at least one powder selected from the group consisting of tin, lead, phosphorous, and an alloy of copper with at least one of tin, lead, and phosphorous, with the copper-alumina blended powder, thereby obtaining a composite powder;
- graphite-blending step for mixing graphite powder with the composite powder, thereby obtaining a graphite-mixed powder;
- a spraying step for spraying the graphite-mixed powder on a substrate;
- and, a sintering step for sintering the mixed-powder on the substrate to bond the mixed powder and substrate.
Dependencies are inferred from the claim text.