Blade member of cermet having surface reaction layer and process

Details Blade member of cermet having surface reaction layer and process Blade member of cermet having surface reaction layer and process

1982-09-29

1984-05-08

Hunt, Brooks H.

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

75238, 75244, 428469, 428698, 428699, 428551, 427226, 427227, 427399, 4272551, 4272254, 419 13, 419 14, 419 16, 419 5, 419 29, B22F 702, C22C 2900, C22C 3200

Patent

active

044472633

ABSTRACT:
A blade member for cutting tools comprises a cermet substrate having on a surface thereof a reaction layer. The reaction layer is composed of carbo-nitride of at least two metals in groups IV.sub.A, V.sub.A and VI.sub.A, the metals including Ti. The reaction layer may be composed of oxy-carbo-nitride of the above metals. The reaction layer may consist of inner and outer layers, the inner layer being composed of carbo-nitride of the above metals while the outer layer is composed of oxy-carbo-nitride of the above metals. The blade members with the reaction layer exhibits excellent toughness, wear resistance and thermoplastic deformation resistance. There is also disclosed a process for producing the above blade member.

REFERENCES:
patent: 3971656 (1976-07-01), Rudy
patent: 4279651 (1981-07-01), Fujimori et al.
patent: 4330333 (1982-05-01), Gibbs

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