Titanium nitride coated valve and method for making

Details Titanium nitride coated valve and method for making Titanium nitride coated valve and method for making

1994-05-20

1995-08-15

Chambers, A. Michael

Valves and valve actuation

Valve

Materials

1231883, F01L 300

Patent

active

054412358

ABSTRACT:
A method is provided that in one embodiment is operative to form a wear resistant coating of titanium nitride on the outer surface of a metal valve such as an internal combustion engine poppet valve (100). In another embodiment, the method is operative to provide a valve made from titanium with an in situ zone of titanium nitride extending inwardly from the valve's outer surface. In yet another embodiment, the method is operative to provide a valve made from titanium with both a coating of titanium on the valve's outer surface and an in situ zone of titanium nitride extending inwardly from the valve's outer surface.

REFERENCES:
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patent: 4904528 (1990-02-01), Gupta et al.
patent: 4929322 (1990-05-01), Sue et al.
patent: 5051140 (1991-09-01), Mushiaku et al.
patent: 5066513 (1991-11-01), Zurecki et al.
patent: 5175020 (1992-12-01), Doellein et al.

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