Mechanical Properties of TiTaHfNbZr High-Entropy Alloy Coatings Deposited on NiTi Shape Memory Alloy Substrates

被引：38

作者：

Motallebzadeh, A. ^{[1
,2
]}

Yagci, M. B. ^{[2
]}

Bedir, E. ^{[1
]}

Aksoy, C. B. ^{[1
]}

Canadinc, D. ^{[1
,2
]}

机构：

[1] Koc Univ, Dept Mech Engn, Adv Mat Grp, TR-34450 Istanbul, Turkey

[2] Koc Univ, Surface Sci & Technol Ctr KUYTAM, TR-34450 Istanbul, Turkey

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2018年 / 49A卷 / 06期

关键词：

IMPROVING CORROSION-RESISTANCE; NITRIDE COATINGS; CELL VIABILITY; THIN-FILMS; OXIDATION; BIOCOMPATIBILITY; MICROSTRUCTURE; BIOMATERIALS; TEMPERATURE; EXPLORATION;

D O I：

10.1007/s11661-018-4605-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

TiTaHfNbZr high-entropy alloy (HEA) thin films with thicknesses of about 750 and 1500 nm were deposited on NiTi substrates by RF magnetron sputtering using TiTaHfNbZr equimolar targets. The thorough experimental analysis on microstructure and mechanical properties of deposited films revealed that the TiTaHfNbZr films exhibited amorphous and cauliflower-like structure, where grain size and surface roughness increased concomitant with film thickness. More importantly, the current findings demonstrate that the TiTaHfNbZr HEA films with mechanical properties of the same order as those of the NiTi substrate constitute promising biomedical coatings effective in preventing Ni release.

引用

页码：1992 / 1997

页数：6

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