Abstract
In this paper, a 16 µm CrN/CrAlN multilayer coating is prepared on the titanium alloy surface via arc ion plating. Since titanium alloys are susceptible to wear in a high-temperature environment, high-temperature wear performance and mechanism after coating are investigated. The results show that the friction coefficient of the CrN/CrAlN multilayer coating decreases with an increase in temperature during wear tests at room temperature, 300 ℃, 500 ℃, and 700 ℃. Moreover, the friction coefficient decreases from 0.9 at room temperature to 0.4 at 700 ℃. The wear rate increases with the temperature, more specifically from 1.32 × 10−5 mm3/(N·m) at room temperature to 6.45 × 10−5 mm3/(N·m) at 700 ℃.
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