Assessment of Ni ion release from TiTaHfNbZr high entropy alloy coated NiTi shape memory substrates in artificial saliva and gastric fluid

被引：26
作者：
Aksoy, C. B. [1 ]
Canadinc, D. [1 ,2 ]
Yagci, M. B. [3 ]
机构：
[1] Koc Univ, Adv Mat Grp, Dept Mech Engn, TR-34450 Istanbul, Turkey
[2] Univ Illinois, Dept Mech Sci & Engn, Urbana, IL 61801 USA
[3] Koc Univ, Surface Sci & Technol Ctr KUYTAM, TR-34450 Istanbul, Turkey
来源：
MATERIALS CHEMISTRY AND PHYSICS | 2019年 / 236卷
关键词：
High entropy alloy; RF magnetron sputtering; TiTaHfNbZr; NiTi; Ni ion release; POROUS NITI; BEHAVIOR; MICROSTRUCTURE; BIOCOMPATIBILITY; OXIDATION; CORROSION;
D O I：
10.1016/j.matchemphys.2019.121802
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
NiTi shape memory alloy substrates were coated with TiTaHfNbZr high entropy alloy (HEA) thin films by RF magnetron sputtering, and then immersed into artificial salvia (AS) and gastric fluid (GF) solutions in order to evaluate the effectiveness of the HEA coating in preventing Ni ion release from the substrates. The findings demonstrate that the TiTaHfNbZr HEA coating significantly restricts Ni ion release from NiTi even when subjected to two very acidic body fluids (AS and GF), warranting a thorough examination of this material for utility as coating material in NiTi based biomedical applications.
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页数：7
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