Machining of High Hardness Materials Using Laser Induced Thermo-chemical Reaction in High Affinity Atmosphere

本研究的目的是利用YAG激光器加热铁粉的热化学反应来去除单晶金刚石。在金刚石与铁粉接触的表面通过石墨化过程去除金刚石。实验检查了金刚石的去除体积和加工条件的影响，例如 铁粉体积、激光束功率和激光照射时间。反应后的粉末 用扫描显微镜和电子探针微量分析法分析了铁粉的表面形貌。是 推测金刚石在与铁接触的表面直接向石墨转化 粉末在本研究工作中，还使用铁和玻璃的切削工艺加工了蓝宝石。

The purpose of this study is to develop the removal processing of a single crystal diamond using thermo-chemical reaction in iron powder by heating with a YAG laser. The diamond is removed by the graphitized process at the surface of the diamond contacted with the iron powder. The experiments examined the removed volumes of the diamonds and the influence of the processing conditions such as the volume of iron powder, the laser beam power, and the laser irradiation time. The powder after reacting with the iron powder were analyzed by a scanning microscope and an electron probe microanalysis. It is deduced that the diamond transfered to the graphite directly at the surface contacted with the iron powder. And a sapphire was also machined using cutting process with iron and glass in this research work.