Wear Characteristics of Low Temperature Degradation-Free Zirconia/Alumina Composites in a Point Contact Condition

Abstract:

The sliding wear of four different compositions of novel low temperature degradation-free zirconia/alumina (LTD-free Z/A) composites were characterized in a ceramicceramic point contact pair. The wear tests were performed by a pin-on-disk type wear tester in a linear reciprocal sliding motion with a point contact in both dry and bovine serum lubricated conditions at room temperature. For the dry sliding wear tests, AZ-2 (20 vol% (Y,Nb,Ce)-TZP/ 80 vol% Al2O3) showed the best wear resistance among four kinds of LTD-free Z/A composites. For the bovine serum lubricated sliding wear tests, wear was too little to be measured for all kinds of Z/A composites. These novel LTD-free Z/A composites having excellent wear resistance demonstrated a potential as the alternative materials for the ceramic- ceramic contact pairs of femoral head and acetabular liner in total hip replacement.

• Periodical: Key Engineering Materials (Volumes 342-343)
• Pages: 557-560
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.342-343.557
• Online since: July 2007
• Authors: Kwon Yong Lee, Hwan Kim, D.W. Kim, Dae Joon Kim, Myung Hyun Lee, Won Seon Seo
• Keywords: Ceramic-Ceramic Point Contact Condition, Low Temperature Degradation-Free, Wear, Zirconia/Alumina Composite

References

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