Wear-resistant coating and process for producing it

Details Wear-resistant coating and process for producing it Wear-resistant coating and process for producing it

2008-07-23

2010-11-02

Chen, Bret (Department: 1715)

Coating processes

Coating by vapor, gas, or smoke

Carbon or carbide coating

C427S249700, C427S249170, C427S249180, C427S249190, C427S577000

Reexamination Certificate

active

07824733

ABSTRACT:
A process for producing a wear-resistant coating and to a wear-resistant coating on predetermined surfaces (2) of machine or engine parts (1) consisting of a sintered material which are exposed to frictional wear, for fuel feed units in particular, comprising at least one metal-free amorphous hydrocarbon layer (5) with sp2- and sp3-hybridized carbon applied to the predetermined surface (2) of the machine or engine part (I) for reducing friction and increasing the wear resistance of the predetermined surface (2) of the machine or engine part (1), and at least one intermediate layer of a metal-containing hydrocarbon layer formed between the predetermined surface of the machine or engine part and the amorphous hydrocarbon layer wherein the metal is a combination of W, Ti, Hf and Ge.

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patent: 6860255 (2005-03-01), Yamaguchi et al.
patent: 6969198 (2005-11-01), Konishi et al.
patent: 2003/0099416 (2003-05-01), Kinno et al.
Field, S.K., et al., “Tribological properties of graphite-like and diamond-like carbon coatings”. Tribology International 37 (2004), pp. 949-956.

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