Abstract
Nano-TiO2/UHMWPE composites were prepared by hot press procedure, and then radiated by gamma ray in dose of 120 kGy, 250 kGy and 500 kGy. The hardness of the composites was initially determined. Subsequently the wear against a CoCrMo alloy counterface were tested in a knee simulator under physiological saline lubrication. The morphologies of the worn surfaces were examined with optical microscope. The structure of the samples was determined by IR and XRD. The results showed that the wear rate of the composite UHMWPE decreased when filled with proper amount of nano-TiO2 and with the radiation dose.
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Acknowledgments
This work is supported by the National Natural Science Foundation of China (Grant No. 50575106) and high technology project of Jiangsu province (Grant No. BG20077046).
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Xiong, D., Lin, J., Fan, D. et al. Wear of nano-TiO2/UHMWPE composites radiated by gamma ray under physiological saline water lubrication. J Mater Sci: Mater Med 18, 2131–2135 (2007). https://doi.org/10.1007/s10856-007-3199-y
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DOI: https://doi.org/10.1007/s10856-007-3199-y