Surface-coated wear-resistant member of cermet and process for p

Stock material or miscellaneous articles – Composite – Of inorganic material

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427215, 428699, B32B 1504

Patent

active

046939440

ABSTRACT:
A surface-coated wear-resistant member of cermet which includes a substrate of cermet and a hard coating vapor-deposited on a surface of the substrate. The coating is composed of at least one titanium compound selected from the group consisting of titanium carbide, titanium nitride, carbonitride of titanium, oxy-carbide of titanium, oxy-nitride of titanium and oxy-carbo-nitride of titanium. An atomic ratio of one of carbon, nitrogen, carbon plus nitrogen, carbon plus oxygen, nitrogen plus oxygen and carbon plus nitrogen plus oxygen to titanium(Ti) in the coating is in the range of between 0.3 and 0.8. The coating contains a compound of TiX and a compound of Ti.sub.2 X wherein X is one of carbon and nitrogen or at least two of carbon, nitrogen and oxygen. The coating may further includes titanium metal. The coating having an average thickness of 1 to 10 .mu.m. There is also disclosed a process for producing such a surface-coated wear-resistant member.

REFERENCES:
patent: 4406668 (1983-09-01), Sarin et al.
patent: 4409003 (1983-10-01), Sarin et al.
patent: 4409004 (1983-10-01), Sarin et al.
patent: 4474849 (1984-10-01), Fujimori et al.

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