Surface amorphization of NiTi alloy induced by Ultrasonic Nanocrystal Surface Modification for improved mechanical properties

被引：62

作者：

Ye, Chang ^{[1
]}

Zhou, Xianfeng ^{[1
,2
]}

Telang, Abhishek ^{[3
]}

Gao, Hongyu ^{[4
]}

Ren, Zhencheng ^{[1
]}

Qin, Haifeng ^{[5
]}

Suslov, Sergey ^{[6
]}

Gill, Amrinder S. ^{[3
]}

Mannava, S. R. ^{[3
]}

Qian, Dong ^{[7
]}

Doll, Gary L. ^{[5
]}

Martini, Ashlie ^{[4
]}

Sahai, Nita ^{[2
,8
,9
]}

Vasudevan, Vijay K. ^{[3
]}

机构：

[1] Univ Akron, Dept Mech Engn, Akron, OH 44325 USA

[2] Univ Akron, Dept Polymer Sci, Akron, OH 44325 USA

[3] Univ Cincinnati, Dept Mech & Mat Engn, Cincinnati, OH 45221 USA

[4] Univ Calif Merced, Sch Engn, Merced, CA 95343 USA

[5] Univ Akron, Timken Engn Surfaces Labs, Akron, OH 44325 USA

[6] Qatar Fdn, QEERI, Doha, Qatar

[7] Univ Texas Dallas, Dept Mech Engn, Richardson, TX 75080 USA

[8] Univ Akron, Dept Geol, Akron, OH 44325 USA

[9] Univ Akron, Integrated Biosci, Akron, OH 44325 USA

来源：

JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS | 2016年 / 53卷

基金：

美国国家科学基金会;

关键词：

Ultrasonic Nano-crystal Surface Modification (UNSM); Surface amorphization; Biocompatibility; Cell culture; Wear resistance; NANOGRAINED/ULTRAFINE-GRAINED STRUCTURES; HYDROXYAPATITE-COATED TITANIUM; HIGH-PRESSURE TORSION; SHAPE-MEMORY ALLOYS; NANOSTRUCTURED TITANIUM; KNEE ARTHROPLASTY; UNITED-STATES; METAL ALLOY; BIOCOMPATIBILITY; OSTEOBLASTS;

D O I：

10.1016/j.jmbbm.2015.09.005

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

We report herein the effects of Ultrasonic Nano-crystal Surface Modification (UNSM), a severe surface plastic deformation process, on the microstructure, mechanical (hardness, wear), wettability and biocompatibility properties of NiTi shape memory alloy. Complete surface amorphization of NiTi was achieved by this process, which was confirmed by X-ray diffraction and high-resolution transmission electron microscopy. The wear resistance of the samples after UNSM processing was significantly improved compared with the non-processed samples due to increased surface hardness of the alloy by this process. In addition, cell culture study demonstrated that the biocompatibility of the samples after UNSM processing has not been compromised compared to the non-processed sample. The combination of high wear resistance and good biocompatibility makes UNSM an appealing process for treating alloy-based biomedical devices. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：455 / 462

页数：8

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