Laser surface modification of AZ31B Mg alloy for bio-wettability
作者： Yee-Hsien Ho , Hitesh D Vora , Narendra B Dahotre
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摘要: Laser surface modification of AZ31B Magnesium alloy changes composition and roughness to provide improved bio-wettability. processing resulted in phase transformation grain refinement due rapid quenching effect. Furthermore, instantaneous heating vaporization removal material, leading the textured generation. A study was conducted on a continuum-wave diode-pumped ytterbium laser create multiple tracks for determining resulting Five different input powers were processed Mg alloy, then examined by XRD, SEM, optical profilometer, contact angle measurement. finite element based heat transfer model developed using COMSOL multi-physics package predict temperature evolution during processing. The thermal histories predicted are used evaluate cooling rates solidification rate associated microstructure. energy samples can be calculated measuring with 3 standard liquid (D.I water, Formamide, 1-Bromonaphthalen). bio-wettability simulated body fluid results 3D morphology, measurement show that size play role wetting behavior samples. Surface low large performs as hydrophilicity. On contrast, high small hydrophobicity.
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