Abstract
The tribological mechanism of bulk chromium materials has been investigated at high-temperature and high-stress conditions simulating the interior ballistic environment in gun barrels. The results show a higher level of weight change after testing at 1, 000 °C as compared to that at 600 °C. The topographical difference is more evident in the friction surface after testing at 1, 000 °C than that at 600 °C. The detailed analysis of surface morphology and chemistry indicates a tribological mechanism combining oxidative wear, abrasive wear, and adhesive wear at a testing temperature of 600 °C, whilst the tribological mechanism is combined with adhesive wear and oxidative wear at a testing temperature of 1, 000 °C.
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