Cemented carbide compositions

Details Cemented carbide compositions Cemented carbide compositions

C - Chemistry, Metallurgy

22

C

57/17, 261/5

C22C 29/06 (2006.01) E21B 10/46 (2006.01)

Patent

CA 1194893

ABSTRACT OF THE DISCLOSURE Cemented carbide compositions useful for rock drilling and allied applications are described. These compositions comprise about 80 to about 97% by weight of refractory particles of, for example, tungsten carbide. The particles are bonded within an alloy matrix of between about 5 and about 50% nickel, sufficient carbon to avoid the formation of detrimental carbon deficiency or excess carbon phases and a balance of about 95 to about 50% iron by weight. In a preferred embodiment, the alloy matrix additionally contains from about 5 to about 20% by weight of manganese.

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