Development of Stress-Mapping Technique with Sub-Microscale Spatial Resolution by Angular dispersive Micro-Raman spectroscopy

本研究发展了角色散型微拉曼光谱。该仪器构建了激光从0度、50度、100度三个方向入射，在0度方向进行探测的角色散光学系统。利用角色散特性成功地确定了氧化铝的晶体取向。特别是确定了a轴和c轴的方向。最后，研究了多晶部分稳定氧化锆（PSZ）的角色散特性测量应力的可能性。力学载荷作用下PSZ的拉曼位移量随入射角的变化而变化，证实了其角色散特性可用于多晶材料的应力测量。

In this study, angular-dispersive-type micro-Raman spectroscopy was developed. In this instrument, the angular dispersive optical system that laser light was made incident from three directions (0, 50, and 100 degree) and detection was in the direction of 0 degree, was constructed. It was successful to determine the crystallographic orientation of Alumina by using angular dispersive properties. Especially, the directions of a-axis and c-axis were determined. Finally, for polycrystalline partially stabilized zirconia (PSZ), the possibility of stress measurement by angular dispersive properties was examined. The amount of Raman shift of PSZ under mechanical loading changed with the incidence angle, and the angular dispersion property was confirmed to be useful for stress measurement of polycrystalline material.