Cermet for tool

Details Cermet for tool Cermet for tool

1990-01-12

1991-09-24

Lechert, Jr., Stephen J.

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

75242, 75244, C22C 2904

Patent

active

050511262

ABSTRACT:
A cermet contains 70 to 95 volume percentage of a hard dispersed phase and 30 to 5 volume percentage of a binder phase comprising one or more metals in group VIII (the iron group), wherein the hard dispersed phase contains as its components transitional metals in group IVb, transitional metals in group Vb, W alone of transitional metals in group VIb, C, and N, and consists of two structurally different types of particles. One type of the particles are single phase particles constituting 5% to 50% of the hard dispersed phase, whereas the other type of the particles are dual phase particles constituting 95% to 5% of the same. The cermet is for use in tools such as coating tools, spike pins, hobs, reamers, screw drivers, and so forth.

REFERENCES:
patent: Re21730 (1941-02-01), Schwarzkopf
patent: 2198343 (1940-04-01), Kieffer
patent: 3752655 (1973-08-01), Ramquist
patent: 4049876 (1977-09-01), Yamamoto et al.
patent: 4145213 (1979-03-01), Oskarsson et al.
patent: 4150984 (1979-04-01), Tanaka et al.
patent: 4636252 (1987-01-01), Yoshimura et al.
patent: 4844738 (1989-07-01), Tanase et al.
patent: 4885132 (1989-12-01), Brandt et al.

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