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Unusual dry sliding tribological behavior of biomedical ultrafine-grained TiNbZrTaFe composites fabricated by powder metallurgy

Published online by Cambridge University Press:  27 March 2014

Liming Zou ,
Linju Zhou ,
Chao Yang ,
Shenguan Qu  and
Yuanyuan Li
Liming Zou
Affiliation:
National Engineering Research Center of Near-net-shape Forming for Metallic Materials, South China University of Technology, Guangzhou 510640, People's Republic of China; and Department of Powder Metallurgy, Guangzhou Research Institute of Non-ferrous Metals, Guangzhou 510650, People's Republic of China
Linju Zhou
Affiliation:
National Engineering Research Center of Near-net-shape Forming for Metallic Materials, South China University of Technology, Guangzhou 510640, People's Republic of China
Chao Yang*
Affiliation:
National Engineering Research Center of Near-net-shape Forming for Metallic Materials, South China University of Technology, Guangzhou 510640, People's Republic of China
Shenguan Qu
Affiliation:
National Engineering Research Center of Near-net-shape Forming for Metallic Materials, South China University of Technology, Guangzhou 510640, People's Republic of China
Yuanyuan Li
Affiliation:
National Engineering Research Center of Near-net-shape Forming for Metallic Materials, South China University of Technology, Guangzhou 510640, People's Republic of China
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

Tribological behavior of biomedical ultrafine-grained (UFGed) TiNbZrTaFe (TNZTF) composites fabricated by powder metallurgy was investigated under dry wear condition. Results show that compared with two kinds of conventional biomedical Ti–6Al–4V (TAV) and Ti–13Nb–13Zr (TNZ) alloys, the wear loss of the TNZTF samples is only 3.5% and 1% of that of the TAV and TNZ samples, respectively. Unusual tribological behavior is that the wear loss of the TNZTF samples decreases with the increase in sliding speed at the same load. This is attributed to the formation of a large amount of hard Nb2O5 particles on the contact surface of the material during rubbing and more severe plastic deformation in the material layers adjacent to the contact surfaces. The wear mechanism of the three kinds of alloys was also investigated. The outstanding tribological property proves that the UFGed TNZTF alloys should be an excellent candidate material to be used for biomedical application in the future.

Keywords

compositehardnesstribology
Type
Articles
Information
Journal of Materials Research , Volume 29 , Issue 7 , 14 April 2014 , pp. 902 - 909
Copyright
Copyright © Materials Research Society 2014 

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