Sintered cemented carbide body coated with three layers

Details Sintered cemented carbide body coated with three layers Sintered cemented carbide body coated with three layers

1975-11-17

1977-07-12

Ansher, Harold

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148 6, 148 63, 148 165, 148 166, 148 315, 427249, 428336, 428409, 428642, 428472, 428539, B32B 1504, C23C 1108, C23C 1118

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active

040355411

ABSTRACT:
A triple coated cemented hard metal carbide product in which a cemented metal carbide substrate is coated with, first, a metal carbide coating, in such a manner so as to create a carbon deficient area in the substrate, then, a metal carbo-nitride and, finally, a metal nitride coating so as to take advantage of the metal carbide and metal nitride properties in order to protect the cemented metal carbide substrate from corrosive atmospheres and abrasion due to frictional wear.

REFERENCES:
patent: 3553038 (1971-01-01), Ader
patent: 3558445 (1971-01-01), Rix et al.
patent: 3784402 (1974-01-01), Reedy
patent: 3787223 (1974-01-01), Reedy
patent: 3846162 (1974-11-01), Bloom
patent: 3874900 (1975-04-01), Post et al.
patent: 3880600 (1975-04-01), Zboril
patent: 3900592 (1975-08-01), Kennedy et al.
patent: 3916052 (1975-10-01), Shattes
patent: 3959557 (1976-05-01), Berry
patent: 3969130 (1976-07-01), Bokros
Kieffer et al., "Uber Die Abscheidung Von Hartstoffschichten," Metall, Feb. 1972, Metal-Verlag GmbH, Berlin, pp. 128-132.

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