FIELD: valving engineering.
SUBSTANCE: valving member comprises two members that slide one with respect to the other. The first member is made of basic material, strengthened layer, and amorphous diamond layer. The strengthened layer is more rigid than the basic material, and its thickness is about 10 m. The amorphous diamond layer is placed on the strengthened layer and defines the sealing surface. The thickness of the amorphous diamond layer is chosen so that to provide enhanced durability of the first member.
EFFECT: enhanced durability.
46 cl, 5 dwg
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