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

Biswas, A. ; Chaterjee, U. K. ; Li, Lin ; Manna, I. ; Majumdar, J. Dutta (2007) Laser assisted surface modification of Ti-6Al-4V for bioimplant application Surface Review and Letters, 14 (4). pp. 531-534. ISSN 0218-625X

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Official URL: http://www.worldscinet.com/srl/14/1404/S0218625X07...

Related URL: http://dx.doi.org/10.1142/S0218625X07009700

Abstract

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 (Epp1) 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.

Item Type:Article
Source:Copyright of this article belongs to World Scientific Publishing Co Pte Ltd.
ID Code:18886
Deposited On:17 Nov 2010 12:52
Last Modified:06 Jun 2011 08:11

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