James J O'Brien

US Patent:

44952520, Jan 22, 1985

Filed:

Jan 16, 1980

Appl. No.:

6/112525

Inventors:

James W. O'Brien - Cleveland Heights OH
Frank Spevak - Maple Heights OH

Assignee:

Imperial Clevite Inc. - Glenview IL

International Classification:

B22F 708
B22F 704
F16C 3300

US Classification:

428555

Abstract:

A wear-resistant metallic article is provided which comprises a metallic substrate, a barrier layer of a metal selected from the group consisting of nickel, alloys of nickel, copper and alloys of copper on a surface of the metallic substrate and a layer of wear-resistant material bonded to the substrate, with the wear-resistant material including a mixture of nickel aluminide in a copper base matrix. A method is provided for producing the above-described wear-resistant metallic article which method comprises the steps of (a) providing a metallic substrate, (b) affixing a barrier layer of a metal selected from the group consisting of nickel, alloys of nickel, copper and alloys of copper to a surface of the metallic substrate, (c) applying a layer of wear-resistant material over the surface of the barrier layer, with the wear-resistant material including a mixture of nickel aluminide in a copper base matrix, (d) sintering the so-applied wear-resistant material at a temperature sufficient to cause it to become bonded to the substrate, (e) compacting the sintered article an amount sufficient to cause it to have a density near theoretical, and (f) re-sintering the compacted article at a temperature sufficient to cause the wear-resistant material to become bonded together and to the substrate.