The friction surfaces of Chinese large grain and fine grain graphite are analyzed under a Scanning Electron Microscope to investigate the friction mechanism of graphite in high temperature helium.

• 摘要为探讨石墨材料在氦气和高温条件下的摩擦机理，利用扫描电子显微镜对国产细颗粒石墨和粗颗粒石墨摩擦试验后的表面进行了观察。