Wear behavior of graphite studies in an air-conditioned environment

The wear performance of graphite used in the high-temperature gas-cooled reactor (HTR-10) was researched. The wear mechanism, worn surface and wear debris were analyzed under SEM. Under test conditions, the wear rate was 2.27×10⁻⁷ g/m for surface contact, and 1×10⁻⁶ g/m level for line contact. The main wear mechanisms of graphite were groove and fatigue. The projected area of wear debris followed the logarithm normal school, giving most wear debris as a small sphere and large flake debris as only a small part.