A thermal model for laser interaction with thick dielectric film on metallic substrate: Application to Ca-P layer on Ti alloy

作者：Paital Sameer R; Dahotre Narendra B^*

来源：Journal of Alloys and Compounds, 2009, 487(1-2): 499-503.

DOI：10.1016/j.jallcom.2009.07.162

• Laser
• Thermal model
• Calcium phosphate tribasic
• Bioceramics
• Phase transformations

Ca-P coatings on Ti-6Al-4V substrates were synthesized using a direct pulsed Nd:YAG laser writing technique. The phase and morphological evolutions within the coatings as a function of laser processing parameters were evaluated using X-ray diffraction and scanning electron microscopy techniques. A three dimensional modeling based on COMSOL's (TM) Multiphysics was adopted to understand the temperature evolution and corresponding cooling rate as a function of laser processing parameters. The temperature evolutions and cooling rate estimated from the model, satisfactorily explained the variation in phases and melt depth with varying pulse frequency of the laser beam.

• 出版日期2009-11-13