Specialized metallurgical processes – compositions for use therei – Compositions – Consolidated metal powder compositions
Patent
1990-06-26
1994-05-03
Walsh, Donald P.
Specialized metallurgical processes, compositions for use therei
Compositions
Consolidated metal powder compositions
85230, 85233, 85234, 85235, 85236, 85237, 85239, 85240, 85241, 85242, 85244, 85248, C22C 2904, C22C 2908, C22C 2910
Patent
active
053083768
ABSTRACT:
A cermet in which the hard constituents are based on Ti, Zr, Hf, V, Nb, Ta, Cr, Mo and/or W and the binder phase is based on Co and/or Ni and possibly small amounts of Al being present. At least 80% by volume of the hard constituents consist of duplex structures made up of a core and at least one surrounding rim. The duplex hard constituents consist of several, preferably at least two, different hard constituent types concerning the composition of core and/or rim(s). These individual hard constituent types consist each of 10-80%, preferably 20-70% by volume of the total content of hard constituents. In addition, non-duplex hard constituents may be present in amounts of up to 20% by volume of the total hard constituent amount.
REFERENCES:
patent: 4857108 (1989-08-01), Brandt et al.
patent: 4885132 (1989-12-01), Brandt et al.
patent: 4944800 (1990-07-01), Kolaska et al.
patent: 4957548 (1990-09-01), Shima et al.
patent: 4985070 (1991-01-01), Kitamura et al.
patent: 5149595 (1992-09-01), Kojo et al.
Jenkins Daniel
Sandvik AB
Walsh Donald P.
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