Chapter 42. Diamond Pin-On-Disk Wear of Al2O3 Matrix Composites and Nonoxides
- John B. Wachtman Jr
Published Online: 28 MAR 2008
Copyright © 1991 The American Ceramic Society, Inc.
Proceedings of the 15th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 12, Issue 7/8
How to Cite
Wu, C. Cm., Rice, R. W., Cameron, C. P., Dolhert, L. E., Enloe, J. H. and Block, J. (1991) Diamond Pin-On-Disk Wear of Al2O3 Matrix Composites and Nonoxides, in Proceedings of the 15th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 12, Issue 7/8 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470313831.ch42
- Published Online: 28 MAR 2008
- Published Print: 1 JAN 1991
Print ISBN: 9780470375099
Online ISBN: 9780470313831
Diamond pin-on-disk wear of composites of Al2O3 with ZrO2, TiB2, or TiC particles or SiC as particles or whiskers is reported along with such measurements of AIN, Si3N4, TiB2, TiC, and a SiAlON-BN composite at 0.5, 1.0, and 1.5 kg loads. AIN and TiB2 were measured at two or more grain sizes showing wear resistance decreasing with increasing grain size when considered over a substantial grain size range (TiB2). Comparison shows that some dense, fine grained composites can have wear resistance equal to or substantially greater than the most wear resistant constituent alone. Observation of wear mode indicates that plastic deformation generally dominates in fine grain bodies whether they are composites or essentially single phase bodies, with fracturing generally becoming more frequent as grain size increases. However, AIN and Si3N4 were exceptions to this, showing predominantly plastic deformation over the full range of grain sizes considered (6–16 m̈m) which appears to correlate with their surprisingly high wear resistance for their moderate hardness.