The unknown powder adhering to the retaining ring of a 600 MW generator rotor was characterized and analyzed by SEM, EDS, Raman spectroscopy, XRD, FTIR and TGA.

• 摘要利用扫描电镜、能谱仪、X射线衍射仪、激光拉曼光谱仪、傅立叶红外光谱和热分析仪对600MW发电机转子端部护环表面不明粉末进行表征和分析。