Abrasive Wear Properties of Cr-Cr3Si and Cr-Cr3Si-X Composites


A series of composites based on the Cr-Cr 3Si system, and containing between 50% and 100% Cr 3Si, were fabricated by hot pressing. These composites have high stiffness, good thermal conductivity, excellent chemical resistance, and high temperature creep and oxidation resistance, making them potential candidates for hard-facing applications and cutting tools in harsh environments. In this study, the Cr-Cr 3Si composites were abrasion tested at ambient temperatures in order to evaluate their wear properties. Single scratch tests were performed to give insight into material removal mechanisms. Although like most metal suicides, these materials behave in a brittle manner, the results of this study indicate that the addition of a ductile second phase (Cr) can enhance both their fracture toughness and abrasive wear resistance. The addition of 10% of the rare earth oxide Er 2O 3 improves the density of the composite, but has no apparent influence on the wear resistance.


Materials Science and Engineering

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Article - Conference proceedings

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Publication Date

01 Dec 2001

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