Tribology testing of ultrafine-grained Ti processed by high-pressure torsion with subsequent coating

被引：0
|
作者：
Chuan Ting Wang
Nong Gao
Mark G. Gee
Robert J. K. Wood
Terence G. Langdon
机构：
[1] National Centre for Advanced Tribology at Southampton,Departments of Aerospace and Mechanical Engineering and Materials Science
[2] Faculty of Engineering and the Environment,undefined
[3] University of Southampton,undefined
[4] Materials Research Group,undefined
[5] Faculty of Engineering and the Environment,undefined
[6] University of Southampton,undefined
[7] National Physical Laboratory,undefined
[8] University of Southern California,undefined
来源：
Journal of Materials Science | 2013年 / 48卷
关键词：
Wear Resistance; Wear Rate; Severe Plastic Deformation; Wear Track; Wear Debris;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A grade 2 pure Ti was processed by high-pressure torsion (HPT) under 3.0 GPa for 10 revolutions to achieve an improved strength. Wear tests revealed that HPT only slightly improved the wear resistance of pure Ti. Subsequently, a TiN coating with a thickness of 2.5 μm was deposited on different Ti substrates to improve the wear resistance. Both indentation and scratch testing demonstrated a much improved load-bearing capacity when ultrafine-grained Ti was chosen as the substrate compared with coarse-grained Ti. All results indicate that pure Ti processed by HPT, when combined with a subsequent coating, represents a good candidate material for bio-implant applications.
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页码：4742 / 4748
页数：6
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