Coated cemented carbides

Details Coated cemented carbides Coated cemented carbides

1991-06-03

1992-05-26

Robinson, Ellis P.

Stock material or miscellaneous articles

Composite

Of inorganic material

428216, 428220, 428688, 428689, 428699, 428704, C23C 2804

Patent

active

051166941

ABSTRACT:
A coated cemented carbide with an improved wear resistance without lowering the toughness as a tool is provided comprising a substrate of a cemented carbide, the surface of which is coated with a multilayer of TiC, TiN and TiCN by the PVD method, the innermost layer in contact with the substrate being a TiN layer with a thickness of 0.1 to 1 .mu.m.

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patent: 4720437 (1988-01-01), Chudo et al.
patent: 4776863 (1988-10-01), van den Berg
"A High Rate Sputtering Process for the Formation of Hard Friction-Reducing TiN Coatings on Tools", Munz et al., Thin Solid Films 96 (1982) 79-86.
"Coated Hardmetals in the Machine Shop", Schedler, 768 Engineers' Digest, vol. 38, No. 8 (Aug. 1977).
Schintlmeister et al.; Cutting Tool Materials Coated by CVD, Wear, vol. 100, 1984, pp. 153-169.

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