Copper base alloy for apex seal material

Details Copper base alloy for apex seal material Copper base alloy for apex seal material

C - Chemistry, Metallurgy

22

C

75/1, 18/108, 27

C22C 1/04 (2006.01) F01C 19/00 (2006.01) F01C 19/02 (2006.01)

Patent

CA 1039981

ABSTRACT OF THE DISCLOSURE A method of making and the resulting metallurgical product for an apex seal design and/or opposing rubbing surface for use in a rotary type combustion engine is disclosed; the seal has ingredients so that it is effective to inherently contain a lubricating film having a retrograde solubility curve so that small additions of chromium can precipitate to achieve a hardening of the matrix, and in some instances an independent graphite lubricant is admixed. A specific example of the composition is a copper-based alloy having 0.1-0.6% chromium and 0.5-1.5% by weight graphite.

221174

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