Stainless steel coated with thin film of carbon containing speci

Details Stainless steel coated with thin film of carbon containing speci Stainless steel coated with thin film of carbon containing speci

1987-05-26

1989-06-27

Roy, Upendra

Stock material or miscellaneous articles

Composite

Of metal

20419211, 20419215, 427 38, 427 39, 427122, 428408, 428634, B05D 306, C23C 1500

Patent

active

048429457

ABSTRACT:
A stainless steel with black transparent appearance suitable for use as a decorative architectural material. The stainless steel material has a stainless steel substrate and a thin graphite film formed on the substrate, the thin graphite film having a thickness not greater than 1 .mu.m and containing 10 to 75 wt % of carbon existing in a state of diamond. This stainless steel material is produced by chemical vapor deposition process making use of a capacitance-coupled type high-frequency plasma, having the steps of preparing a stainless steel material as a substrate; placing the substrate in an atmosphere of a mixture gas which contains both hydrogen gas and an inert gas together with a hydrocarbon gas; and causing a reaction by applying a D.C. voltage of 100 to 600 V using the substrate as a cathode; thereby forming, on the substrate, a thin graphite film having a thickness not greater than 1 .mu.m and containing 10 to 75 wt % of carbon existing in a state of diamond.

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