Complex boride cermets and processes for their production

Details Complex boride cermets and processes for their production Complex boride cermets and processes for their production

1989-05-16

1991-06-11

Lechert, Jr., Stephen J.

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

75244, 419 12, 419 17, C22C 2904

Patent

active

050229192

ABSTRACT:
A complex boride cermet having high strength and high toughness, which comprises a hard phase composed mainly of a boride of (Mo.sub.1-x W.sub.x).sub.2 NiB.sub.2 formed by substituting a part of Mo of Mo.sub.2 NiB.sub.2 by W, and a matrix alloy phase composed mainly of Ni and containing Mo, and a complex boride cermet comprising a hard phase composed mainly of Mo.sub.2 NiB.sub.2 or (Mo.sub.1-x W.sub.x).sub.2 NiB.sub.2 and a matrix of an alloy phase composed mainly of Ni and containing Mo, which is characterized in that carbon or/and nitrogen, and optionally at least one metal selected from the metals of Groups 4B and 5B and Cr, are incorporated to further improve the strength and toughness. Such complex boride cermet has high strength and high toughness and maintains such properties even at elevated temperatures of from 600.degree. to 900.degree. C. Also disclosed is a process for producing a complex boride cermet containing carbon or/and nitrogen, and optionally at least a carbide or/and a nitride of a metal selected from the metals of Groups 4B, 5B and 6B are added to the starting material.

REFERENCES:
patent: 2088981 (1937-08-01), Sturgis
patent: 2776468 (1957-01-01), Steinitz
patent: 3903238 (1975-09-01), Grinder et al.
Powder Met. Bull., 6, 123 (1953), (Steinitz & Binder).
Powder Met. Bull., 6, 154 (1953), (Binder & Roth).
P. T. Kolomytsev, N. V. Moskaleva, Poroshkovays Metallurgiya No. 8 (44), Aug. 1966, pp. 665-670.

Affiliated with

Also associated with

Rating

Complex boride cermets and processes for their production does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Complex boride cermets and processes for their production, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Complex boride cermets and processes for their production will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-780828