Wear Resistance of Nano-ZrO₂ Ceramic for Hip Joint Head Prostheses

Abstract:

By using the ring-block friction and wear machine, the friction and wear behavior of nano-ZrO2 ceramic test block against GCr15 steel test ring has been studied. At the same time, friction and wear test of 45# steel block against GCr15 steel ring has also been conducted for comparison. By using self-made test machine for the wear ability of the hip joint, the friction test of nano-ZrO2 ceramic hip joint head against ultra-high molecular weight polyethylene (UHMWPE) acetabulum has been done, the friction test of Co-Cr-Mo alloy hip joint head against UHMWPE acetabulum has also been made for comparison. The results show that the friction factor of nano-ZrO2 ceramic test block against GCr15 steel test ring is less 37.3% than that of 45# steel block against GCr15 steel ring, the wear weight of nano-ZrO2 ceramic test block against GCr15 steel test ring is only 0.76% of that of 45# steel block against GCr15 steel ring. The wear weight of UHMWPE acetabulum against nano-ZrO2 ceramic hip joint head is 61.5% of UHMWPE acetabulum against Co-Cr-Mo alloy hip joint head. This indicates nano-ZrO2 ceramic has good wear resistance property and is the ideal materials for artificial Hip joint head Prostheses.

• Periodical: Advanced Materials Research (Volumes 105-106)
• Pages: 175-178
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.105-106.175
• Online since: April 2010
• Authors: Chen Wang, Li Min Dong, Qing Feng Zan, Pen Guo, Jie Mo Tian
• Keywords: Friction, Hip Joint, Nano-ZrO₂ Ceramic, Wear

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