Paper Title:
Wear Properties of Y-TZP Ceramics Dispersed with Second Phase Particles
  Abstract

The wear properties of ADZ (alumina dispersed in Y-TZP) and MDZ (mullite dispersed in Y-TZP) were investigated by using a ring-on-block tribometer. The results showed that for Y-TZP ceramic, the addition of alumina phase (with 10-20% in mass fraction) leads to an improved wear resistance. With the increase of the normal load, the wear rates of ADZ ceramics increase. Under low and medium normal load (100N and 300N), the wear resistance is controlled by the hardness of ceramics, and under high normal load (500N) the fracture toughness is obviously contributed to the wear resistance of the ceramics. For MDZ ceramic, the wear resistance of 15MDZ (15wt% mullite dispersed in Y-TZP) is better than that of 20 MDZ (20wt% mullite) under the normal load from 100 N to 500 N. The mechanical properties of 15MDZ are worse than that of Y-TZP ceramic, but the wear resistance is enhanced due to the action of “needle roller bearing” of the fractured rod-like mullite particles.

  Info
Periodical
Key Engineering Materials (Volumes 368-372)
Edited by
Wei Pan and Jianghong Gong
Pages
744-747
DOI
10.4028/www.scientific.net/KEM.368-372.744
Citation
X. P. Liang, S. B. Xin, X. H. Wang, Z. F. Yang, "Wear Properties of Y-TZP Ceramics Dispersed with Second Phase Particles", Key Engineering Materials, Vols. 368-372, pp. 744-747, 2008
Online since
February 2008
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$32.00
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