FIELD: pumps.
SUBSTANCE: invention relates to sliding members that slide against each other and can be used in piston pumps and motors made with the use of these members. Sliding portion of one sliding member is formed from amorphous carbon alloyed with chromium, and sliding portion of another sliding member is formed from copper alloy or aluminium alloy. In piston pump or motor one of the sliding members is used as valve plate fixed within case, and the other sliding member is used as cylinder block disposed in the case so as to slide against valve plate.
EFFECT: preventing separation of amorphous carbon film with improved sliding between them.
4 cl, 2 tbl, 5 dwg
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