Dry-Sliding Wear Behavior of (TiZrNbTa)(90)Mo-10 High-Entropy Alloy Against Al2O3

doi:10.11900/0412.1961.2020.00031

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	Dry-Sliding Wear Behavior of (TiZrNbTa)(90)Mo-10 High-Entropy Alloy Against Al2O3
	Song Qianting 1,2; Xu Yingkun 1; Xu Jian 1
刊名	ACTA METALLURGICA SINICA
	2020-11-11
卷号	56 期号:11 页码:1507-1520
关键词	high-entropy alloy Al2O3 tribology wear biomedical metal
ISSN号	0412-1961
DOI	10.11900/0412.1961.2020.00031
通讯作者	Xu Jian(jianxu@imr.ac.cn)
英文摘要	Degenerative and inflammatory joint disease including osteoarthritis, rheumatoid arthritis and chondromalacia affect more and more people. The standard treatment nowadays is arthroplasty, such as total hip replacement (THR). The material selection for the combination of bearing surfaces is a critical issue to determine the life quality of patients with THR. High entropy alloy (HEA) is expected to be a candidate material owing to its appreciated mechanical properties. A new HEA, (TiZrNbTa)(90)Mo-10 alloy was developed recently, but its tribological behavior is still unclear. Using ball-on-plate reciprocating sliding approach, dry sliding wear behavior of arc-melted (TiZrNbTa)(90)Mo-10, HEA against Al2O3, was investigated, together with two conventional implant alloys, TI6A14V and Co28Cr6Mo, for comparison. The wear mechanism of these alloys was revealed by characterizing the morphology of worn track, wear debris and scar on counterpart ball. It was shown that, under dry sliding condition, the coefficient of friction (f) of the HEA was determined to be 0.8 similar to 0.9, which is nearly double of that of either Ti6AI4V or Co28Cr6Mo, and is insensitive to the applied loading. Meanwhile, specific wear rate of this HEA is approximately 2.3 and 90 times of that of Ti6A14V and Co28Cr6Mo, respectively, which means that wear resistance of the former is inferior to the two latter under the current conditions. As indicated, wear mechanism of the HEA is dependent on the applied loading. The abrasive wear is predominant under lower-level loading, whereas the third-body abrasive wear took place and played a remarkable role as the loading increased. It is noteworthy that such a complex mechanism is considerably different from that of either Ti6Al4V or Co28Cr6Mo. Furthermore, it is of interest to note that the advantage in mechanical properties of the current HEA, such as high strength and high hardness, is not necessarily to offer its excellent wear resistance, at least under the current tribological condition. It is proposed as future work to screen the appreciate materials as counterpart for this HEA and to characterize its wear behavior under a condition containing lubricant medium such as physiological fluid.
资助项目	National Natural Science Foundation of China[51571192]
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000584345200007
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/141499]
专题	金属研究所_中国科学院金属研究所
通讯作者	Xu Jian
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Song Qianting,Xu Yingkun,Xu Jian. Dry-Sliding Wear Behavior of (TiZrNbTa)(90)Mo-10 High-Entropy Alloy Against Al2O3[J]. ACTA METALLURGICA SINICA,2020,56(11):1507-1520.
APA	Song Qianting,Xu Yingkun,&Xu Jian.(2020).Dry-Sliding Wear Behavior of (TiZrNbTa)(90)Mo-10 High-Entropy Alloy Against Al2O3.ACTA METALLURGICA SINICA,56(11),1507-1520.
MLA	Song Qianting,et al."Dry-Sliding Wear Behavior of (TiZrNbTa)(90)Mo-10 High-Entropy Alloy Against Al2O3".ACTA METALLURGICA SINICA 56.11(2020):1507-1520.