Abrasive Wear Properties of Cr-Cr₃Si and Cr-Cr₃Si-X Composites
A series of composites based on the Cr-Cr3Si system, and containing between 50% and 100% Cr3Si, 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-Cr3Si 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 Er2O3 improves the density of the composite, but has no apparent influence on the wear resistance.
J. W. Newkirk and J. Hawk, "Abrasive Wear Properties of Cr-Cr₃Si and Cr-Cr₃Si-X Composites," Proceedings of the Advances in Powder Metallurgy and Particulate Materials (2001, New Orleans, LA), pp. 1471 - 1485, Metal Powder Industries Federation, May 2001.
2001 International Conference on Powder Metallurgy & Particulate Materials (2001: May 13-17, New Orleans, LA)
Materials Science and Engineering
Keywords and Phrases
Ductile Phase Toughening (DPT); Material Removal; Abrasion; Abrasives; Chromium Compounds; Corrosion Resistance; Fracture Toughness; High Temperature Effects; Hot Pressing; Thermal Conductivity; Wear Resistance; Composite Materials
International Standard Serial Number (ISSN)
Article - Conference proceedings
© 2001 Metal Powder Industries Federation, All rights reserved.
01 May 2001