Abstract
The TiSiN coating was prepared by arc ion plating to improve wear resistance of titanium alloy at elevated temperatures. The thickness of 1.97 μm and the columnar crystal were observed in cross section image. It was found that the TiSiN coating had a lower friction coefficient at high temperatures than at room temperature. Nevertheless, the rising wear rate at the temperature of 500 °C indicated the destruction of the coating. The friction process would destroy the columnar crystal and generate oxide, amorphous phase and a lot of nanocrystalline with defects. Meanwhile, an amount of cracks were found in the coating at 500 °C which allowed oxygen get in touch with the interior of the coating and resulted in a more serious oxidization.
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