Effect of TaC on W-Ti-Co Ultrafine Cemented Carbides

Abstract:

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The W-Ti-Co powders was doped different content of TaC with an average particle size of 270nm were prepared by 72 hours high-energy ball milling. The powder was cold isostatic pressed and vacuum sintered at 1380°C. The physical properties and the micrographs of samples were detected. The main conclusions were as follow: the density and Cobalt magnetic decreased with the content of TaC increasing, the coercivity increased at first and then decreased, the coercivity of alloy with 0.6wt.% TaC was higher than the other. When the content of TaC was less than 0.6wt.%, the hardness increased with the content of TaC increasing .While when the content of TaC was more than 0.6wt.%, the hardness decreased obviously. Comparing with the alloy without TaC doped, the transverse rupture strength (TRS) of the alloy with 0.4wt.%TaC increased to a larger extent. When the content of TaC was more than 0.4wt.%, the transverse rupture strength (TRS) decreased with the content of TaC increasing. The TaC could inhibit the grain growth, and the comprehensive performance of the alloy with 0.4wt.% TaC was best.

Info:

Periodical:

Advanced Materials Research (Volumes 306-307)

Edited by:

Shiquan Liu and Min Zuo

Pages:

598-602

DOI:

10.4028/www.scientific.net/AMR.306-307.598

Citation:

C. C. Zhang et al., "Effect of TaC on W-Ti-Co Ultrafine Cemented Carbides", Advanced Materials Research, Vols. 306-307, pp. 598-602, 2011

Online since:

August 2011

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Price:

$35.00

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