Abrasive wear properties of Cr–Cr 3 Si composites

Abrasive wear properties of Cr–Cr 3 Si composites A series of composites based on the Cr–Cr 3 Si system, and containing between 50 and 100%Cr 3 Si, 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 3 Si 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 silicides, 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 2 O 3 improves the density of the composite, but has no apparent influence on the wear resistance. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Wear Elsevier

Abrasive wear properties of Cr–Cr 3 Si composites

Wear, Volume 251 (1) – Oct 1, 2001

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Publisher
Elsevier
Copyright
Copyright © 2001 Elsevier Science B.V.
ISSN
0043-1648
eISSN
1873-2577
DOI
10.1016/S0043-1648(01)00768-2
Publisher site
See Article on Publisher Site

Abstract

A series of composites based on the Cr–Cr 3 Si system, and containing between 50 and 100%Cr 3 Si, 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 3 Si 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 silicides, 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 2 O 3 improves the density of the composite, but has no apparent influence on the wear resistance.

Journal

WearElsevier

Published: Oct 1, 2001

References

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