Please use this identifier to cite or link to this item:
https://hdl.handle.net/10356/85519
Title: | Nano-hardness, wear resistance and pseudoelasticity of hafnium implanted NiTi shape memory alloy | Authors: | Zhao, Tingting. Li, Yan. Liu, Yong. Zhao, Xinqing. |
Keywords: | DRNTU::Engineering::Materials::Mechanical strength of materials | Issue Date: | 2012 | Source: | Zhao, T., Li, Y., Liu, Y., & Zhao, X. (2012). Nano-hardness, wear resistance and pseudoelasticity of hafnium implanted NiTi shape memory alloy. Journal of the mechanical behavior of biomedical materials, 13, 174-184. | Series/Report no.: | Journal of the mechanical behavior of biomedical materials | Abstract: | NiTi shape memory alloy was modified by Hf ion implantation to improve its wear resistance and surface integrity against deformation. The Auger electron spectroscopy and x-ray photoelectron spectroscopy results indicated that the oxide thickness of NiTi alloy was increased by the formation of TiO2/HfO2 nanofilm on the surface. The nano-hardness measured by nano-indentation was decreased even at the depth larger than the maximum reach of the implanted Hf ion. The lower coefficient of friction with much longer fretting time indicated the remarkable improvement of wear resistance of Hf implanted NiTi, especially for the sample with a moderate incident dose. The formation of TiO2/HfO2 nanofilm with larger thickness and decrease of the nano-hardness played important roles in the improvement of wear resistance. Moreover, Hf implanted NiTi exhibited larger pseudoelastic recovery strain and retained better surface integrity even after being strained to 10% as demonstrated by in situ scanning electron microscope observation. | URI: | https://hdl.handle.net/10356/85519 http://hdl.handle.net/10220/17198 |
ISSN: | 1751-6161 | DOI: | 10.1016/j.jmbbm.2012.04.004 | Schools: | School of Mechanical and Aerospace Engineering | Fulltext Permission: | none | Fulltext Availability: | No Fulltext |
Appears in Collections: | MAE Journal Articles |
SCOPUSTM
Citations
10
53
Updated on Mar 22, 2024
Web of ScienceTM
Citations
10
42
Updated on Oct 26, 2023
Page view(s) 50
515
Updated on Mar 27, 2024
Google ScholarTM
Check
Altmetric
Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.