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US 5,824,923 AGranted
Sintered friction material, composite copper alloy powder used therefor and manufacturing method thereof
AssigneeSumitomo Electric Industries, Ltd.
InventorsKatsuyoshi Kondoh, Yoshishige Takano
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Abstract
A sintered friction material includes a copper alloy base and hard particles. The copper alloy base includes copper and at least one of, and preferably both, Zn and Ni within a total range of 5 to 40 wt % of the copper alloy base. The hard particles are uniformly dispersed in a matrix formed by the original composite copper alloy powder constituting the base, in a content amount within a range of 10 to 30 wt % of the friction material.
Claims39
A sintered friction material comprising:
- a copper alloy base material including copper alloy powder grains, and Cu, Zn, and Ni, wherein a content of said Zn and Ni together is within a range of 5 to 40 wt % of said base material;
- and
- hard particles uniformly dispersed in said copper alloy powder grains of said base material, wherein a content of said hard particles is within a range of 10 to 30 wt % of said friction material.
Dependencies are inferred from the claim text.