Compositions having enhanced wear resistance

Details Compositions having enhanced wear resistance Compositions having enhanced wear resistance

2006-10-31

2006-10-31

Mai, Ngoclan T. (Department: 1742)

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

C075S239000, C075S240000, C175S420100, C175S420200, C428S698000

Reexamination Certificate

active

07128773

ABSTRACT:
A composite material includes a double cemented carbide and a coarse grain dopant, wherein the coarse grain is added in an amount sufficient to improve wear resistance of virgin double cemented carbide. The double cemented carbide may selected from the group of carbides consisting of W, Ti, Mo, Nb, V, Hf, Ta, and Cr carbides. The coarse grain dopant may also be at least one carbide selected from the group consisting of W, Ti, Mo, Nb, V, Hf, Ta, and Cr carbides. The coarse grain carbide may be between about 5% to about 90% by weight of the total carbide in the composite. Preferably, the coarse grain carbide is about 10% to about 50% by weight of the total carbide in the composite.

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Xin Deng, et al. “Mechanical Properties of a Hybrid Cemented Carbide Composite”; International Journal of Refractory Metals & Hard Materials 19 (2001) 547-552 (6 pages).
UK- Combined Search and Examination Report dated Aug. 20, 2004 (6 pages).

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