Melt depth prediction for laser irradiated magnesia partially stabilised zirconia

A suitable model has been developed to predict the effects of CO₂ laser irradiation on magnesia partially stabilised zirconia. The paper presents an analytical model to simulate the transverse electromagnetic mode (TEM₀₁) CO₂ laser beam of using two paralleled laser beams and investigate the melt pool depth geometry in the MgO-PSZ following CO₂ laser irradiation. The predicted melt pool depth and the experimental values were in relatively good agreement over a certain range of laser energy densities. The deviation between the calculated results and measured results was attributed to the difference between the real effects of TEM₀₁ beam mode and two simulated paralleled beams, the neglecting of sideways conduction energy and the significant difference between the meltpool diameter and laser beam diameter.