Paper Title:
Wear Behaviors of MoSi2 at Elevated Temperatures
  Abstract

MoSi2 was prepared by SHS, and then pressed under 300 MPa at room temperature and sintered at 1600 °C for 1 h in a vacuum furnace. The tribological properties of MoSi2 against Al2O3 in the temperature range from 700°C to 1100 °C were investigated. Microphotographs and phases of the worn surface of MoSi2 were observed by SEM and XRD. Results showed that MoSi2 has well friction and wear properties below 900 °C. When temperature rises from 900 °C to 1000 °C, wear rate of MoSi2 is raised by 20.8% which is attribute to the change of wear mechanism. The main wear mechanisms of MoSi2 are adhesion and oxidation at high temperatures. When over 900 °C, because of ductile - brittle transition characteristic of this material, plastic deformation and fracture are also found on the worn surface of MoSi2. This leads to the high wear rate of MoSi2.

  Info
Periodical
Key Engineering Materials (Volumes 368-372)
Edited by
Wei Pan and Jianghong Gong
Pages
961-963
DOI
10.4028/www.scientific.net/KEM.368-372.961
Citation
H. A. Zhang, X. P. Hu, W. C. Tan, C. Shi, "Wear Behaviors of MoSi2 at Elevated Temperatures", Key Engineering Materials, Vols. 368-372, pp. 961-963, 2008
Online since
February 2008
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Price
$32.00
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