2006
DOI: 10.1177/0885328206055998 View full text |Buy / Rent full text
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Abstract: 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 alpha+beta phase. After laser surface melting, it transforms to acicular alpha embed… Show more

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“…As the irradiance increased, a more homogeneous meltpool depth with fewer disconti¬nuities was observed. Lower meltpool depths were obtained in this experiment compared to other laser surface modification studies [20,21].…”
Section: Roughness Characterisationcontrasting
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rupbmjkragerfmgwileyiopcupepmcmbcthiemesagefrontiersapsiucrarxivemeralduhksmucshluniversity-of-gavle
“…As the irradiance increased, a more homogeneous meltpool depth with fewer disconti¬nuities was observed. Lower meltpool depths were obtained in this experiment compared to other laser surface modification studies [20,21].…”
Section: Roughness Characterisationcontrasting
“…This paper presents laser surface melting under an argon environment to prevent oxidation and alloying with air elements during processing. The work utilised high speed laser processing capable of combinations of lower irradiances and higher residence times compared to previous research [20][21][22][23][24][25]. Low residence time allows for higher cooling rates, thus producing a more dynamic solidification which allows for novel phase formation and more homogeneous microstructures.…”
Section: Introductionmentioning
“…The laser technique produces a smaller heataffected zone (HAZ) and reduced distortion. However, the presence of pores, changes in the microstructures in HAZ and new surface characteristics could influence in corrosion behaviour and fatigue and corrosion-fatigue of titanium and Ti-6Al-4V alloy [8,9]. Results for the mechanical properties of laser treated of Titanium and Ti-6Al-4V alloy are not available in the literature.…”
Section: Introductionmentioning
“…Titanium is the most widely used biomaterial for medical implants [1] because of its good corrosion resistance, low density and good biocompatibility [2]. Though the Ti-6Al-4V alloy exhibits excellent corrosion properties, the metal ions released by corrosion or wear processes may promote aseptic loosening after long-term implantation [3].…”
Section: Introductionmentioning