脉冲激光LGA法钛表面氮化及其XRD和SEM微观分析

用调Ｑ－ＹＡＧ和ＸｅＣｌ脉冲激光在钛表面以激光气体合金化方法生成氮化钛层，用Ｘ射线衍射仪分析了不同激光能量、不同Ｎ２气压不同作用脉冲数等条件下ＴｉＮ的结晶取向、结晶形态、氮化程度，用扫描电镜观察了它们的微观结构，对脉冲激光的ＬＧＡ法机理进行了探讨，也发现了用ＬＧＡ法对Ｍｏ的氮化生成Ｍｏ２Ｎ．

Surface nitridation of titanium using pulse laser gas alloying method and its microstructure analysis with XRD and SEM

TiN layers are generated on titanium surface using laser gas alloying(LGA)method with Q-switched YAG laser and XeCl excimer laser.The growth orientation of crystalinzation morphology and degree of nitridation of titanuium un-der different conditions such as laser power densities ,N_2 pressures and pulse num-bers of irradiation are analysed with X-ray diffractometer.The microstructures of TiN are investigated with scanning electron microscope and then the mechanism of LGA is discussed from the fact of experiments. Mo_2N layer on molybdenum are pro-duced using the same method.