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Laser Surface Modification of Ti—6Al—4V: Wear and Corrosion Characterization in Simulated Biofluid
Department of Materials Science and Engineering The University of Tennessee, Knoxville, TN 37996, USA
Department of Materials Science and Engineering The University of Tennessee, Knoxville, TN 37996, USA; Materials Processing Group, Metals and Ceramics Division Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA; ndahotre{at}utk.edu Laser surface melting (LSM) of Ti—6Al—4V is performed in argon to improve its properties, such as microstructure, corrosion, and wear for biomedical applications. Corrosion behavior is investigated by conducting electrochemical polarization experiments in simulated body fluid (Ringer's solution) at 37 C. Wear properties are evaluated in Ringer's solution using pin-on-disc apparatus at a slow speed.
Untreated Ti—6Al—4V contains
Key Words: laser surface treatment • Ti—6Al—4V • microstructure • anodic polarization • corrosion • wear corrosion • Ringer's solution
This version was published on July
1, 2006 Journal of Biomaterials Applications, Vol. 21, No. 1,
49-73 (2006) This article has been cited by other articles:
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+ß phase. After laser surface melting, it transforms to acicular 
12 µA/cm2). The wear resistance of laser-treated Ti—6Al—4V in simulated body fluid is enhanced compared to that of the untreated one. It is the highest for the one that is processed at a laser power of 800 W. Typical micro-cutting features of abrasive wear is the prominent mechanism of wear in both untreated and as-laser-treated Ti—6Al—4V. Fragmentation of wear debris assisted by microcracking was responsible for mass loss during the wear of untreated Ti—6Al—4V in Ringer's solution. 
