High hardness, wear resistant materials

Details High hardness, wear resistant materials High hardness, wear resistant materials

1989-09-01

1990-07-31

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Carbide or oxycarbide containing

75241, 51307, C04B 3556

Patent

active

049450735

ABSTRACT:
A powdered admixture of a boron, carbon, nitrogen or silicon derivative of a first metal, e.g., tungsten carbide, and a source of a second metal, e.g., molybdenum subcarbide when the second metal is molybdenum, is, when subjected to densification conditions, partially reacted and converted to a hard, wear resistant material. Such a material, formed from an admixture of tungsten carbide and molybdenum subcarbide, contains tungsten monocarbide and at least one mixed tungsten/molybdenum carbide. This material has a Vickers hardness of at least about 2200 kg/mm.sup.2 measured using a 1 kg load. Articles formed from this material can be useful as, for example, nozzles in abrasive or nonabrasive waterjet cutting machines and various parts of wire drawing apparatus.

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