On the bio-corrosion and biocompatibility of TiTaNb medium entropy alloy films

被引：39
作者：
Chen, Y. H. [1 ]
Chuang, W. S. [2 ]
Huang, J. C. [1 ,2 ]
Wang, X. [1 ,3 ]
Chou, H. S. [2 ]
Lai, Y. J. [2 ]
Lin, P. H. [2 ]
机构：
[1] City Univ Hong Kong, Hong Kong Inst Adv Study, Dept Mat Sci & Engn, Kowloon, Hong Kong, Peoples R China
[2] Natl Sun Yat Sen Univ, Dept Mat & Optoelect Sci, Kaohsiung 804, Taiwan
[3] Liaoning Shihua Univ, Sch Mech Engn, Fushun 113001, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2020年 / 508卷
关键词：
TiTaNb; Magnetron sputtering; High entropy alloy; Medium entropy alloy thin film; Biocompatibility; TI-TA ALLOYS; MECHANICAL-PROPERTIES; WEAR BEHAVIOR; MICROSTRUCTURE; COATINGS; RESISTANCE; TI-6AL-4V; TANTALUM; PROLIFERATION; ELEMENTS;
D O I：
10.1016/j.apsusc.2020.145307
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Some high or medium entropy alloys (HEAs and MEAs) have been demonstrated to exhibit great mechanical and bio-corrosion properties to meet the demands as bio-implant materials. However, the difference in Young's modulus between these alloys and human bone would induce stress shielding effects. Therefore, HEA or MEA coating films appear to be potential materials since these films can be coated on appropriate implant devices as surface modification. This study employs sputtering to produce equimolar TiTaNb MEA film and a titaniumbased Ti-10Ta-6Nb film in order to compare their mechanical and bio-corrosion properties. The results indicate that the TiTaNb MEA films have higher hardness, higher wear resistance, greater biocompatibility and superior bio-corrosion resistance, likely to be a high potential bio-implant coating materials. The underlying related chemical reactions and mechanisms are also explored and discussed.
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页数：10
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