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

被引：34
|
作者：
Wang, Chuan Ting [1 ,2 ]
Gao, Nong [2 ]
Gee, Mark G. [3 ]
Wood, Robert J. K. [1 ]
Langdon, Terence G. [2 ,4 ,5 ]
机构：
[1] Univ Southampton, Natl Ctr Adv Tribol Southampton, Fac Engn & Environm, Southampton SO17 1BJ, Hants, England
[2] Univ Southampton, Fac Engn & Environm, Mat Res Grp, Southampton SO17 1BJ, Hants, England
[3] Natl Phys Lab, Teddington TW16 5PT, Middx, England
[4] Univ So Calif, Dept Aerosp & Mech Engn, Los Angeles, CA 90089 USA
[5] Univ So Calif, Dept Mat Sci, Los Angeles, CA 90089 USA
来源：
JOURNAL OF MATERIALS SCIENCE | 2013年 / 48卷 / 13期
基金：
美国国家科学基金会; 英国工程与自然科学研究理事会;
关键词：
PURE TITANIUM; MECHANICAL-PROPERTIES; NANOSTRUCTURED TITANIUM; METALLIC BIOMATERIALS; FATIGUE PROPERTIES; WEAR PROPERTIES; MICROSTRUCTURE; ECAP; BEHAVIOR; DEFORMATION;
D O I：
10.1007/s10853-012-7110-y
中图分类号：
T [工业技术];
学科分类号：
08 ;
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 mu m 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.
引用
收藏
页码：4742 / 4748
页数：7
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