Laser assisted surface modification of Ti-6Al-4V for bioimplant application

被引：5
|
作者：
Biswas, A. [1 ]
Chatterjee, U. K.
Li, Lin
Manna, I.
Majumdar, J. Dutta
机构：
[1] Indian Inst Technol, Dept Met & Mat Engn, Kharagpur 721302, W Bengal, India
[2] Univ Manchester, Sch Mech Aero & Civil Engn, Manchester M13 9PL, Lancs, England
来源：
SURFACE REVIEW AND LETTERS | 2007年 / 14卷 / 04期
关键词：
D O I：
10.1142/S0218625X07009700
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The present study aims at enhancing the wear resistance of Ti-6Al-4V by laser surface nitriding. Laser surface treatment has been carried out by melting of the sand blasted Ti-6Al-4V substrate using a high power continuous wave Diode laser with nitrogen as shrouding environment ( at a gas. flow rate of 51/min). Laser surface nitriding led to formation of dendrites of titanium nitrides. The microhardness is improved to a maximum of 900-950 VHN (Vickers hardness number) in laser surface nitriding as compared to 260 VHN of the as-received substrate. Surface nitriding increased primary potential for pit formation (E-pp1) as compared to Ti-6Al-4V. Biocompatibility behavior showed a better cell viability due to surface nitriding as compared to the as-received Ti-6Al-4V.
引用
收藏
页码：531 / 534
页数：4
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