Copper alloy sliding material
AssigneeDaido Metal Company Ltd.
InventorsKenji Sakai, Naohisa Kawakami, Satoru Kurimoto, Koichi Yamamoto, Takayuki Shibayama
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Abstract
Disclosed is a copper alloy sliding material having a metal structure wherein intermetallic compounds exist adjacently to Pb-phase islands and/or Bi-phase islands. Because intermetallic compounds exist between the matrix and the Pb phase and/or the Bi phase, the material can have improved anti-seizure property, since, under load or due to wear, the surface of the material has recessions at the soft Pb and/or Bi phase and the matrix with respect to the intermetallic compounds.
Claims6
A copper alloy sliding material which is a sintered alloy having not less than 100 of Vickers hardness, and which consists of, by mass percent,
- 0.5% to 15% Sn,
- at least one of 0.5% to 10% Ni and 0.1% to 10% Ag in a total amount of 0.1% to 10%,
- at least one of Pb and Bi in a total amount of 1% to 10%, and
- the balance of Cu and incidental impurities,
- wherein the copper alloy contains intermetallic compounds of Ni—Sn and/or Ag—Sn which are directly adjacent to the Pb-phase and/or the Bi-phase.
A copper alloy sliding material which is a sintered alloy having not less than 100 of Vickers hardness, and which consists of, by mass percent,
- 0.5% to 15% Sn,
- at least one of 0.5% to 10% Ni and 0.1% to 10% Ag in a total amount of 0.1% to 10%,
- at least one of Pb and Bi in a total amount of 1% to 10%,
- one or more of Fe, Al, Zn, Co and P (phosphorous) a total amount of not more than 40%, and
- the balance of Cu and incidental impurities,
- wherein the copper alloy contains intermetallic compounds of Ni—Sn and/or Ag—Sn which are directly adjacent to the Pb-phase and/or the Bi-phase.
Dependencies are inferred from the claim text.