Unveiling the influence of TiN on the microstructure and high-temperature oxidation behavior of Ti-Al-Cr composite coating
Source abstract
Abstract
The effect of TiN addition on the high temperature oxidation behavior of Ti-Al-Cr coating was investigated. Results revealed that the coating with 4 wt.% TiN addition exhibited superior oxidation resistance. The minimum mass gain after being oxidized at 850 ℃ was 0.56 mg/cm 2 , which was 40.1% less than that of the TiN-free coating. The mechanisms for TiN addition can enhance the high-temperature oxidation resistance of Ti-Al-Cr coating include the dispersed TiN resulting in more grain boundaries and prolonging the diffusion paths of oxygen and contributing to the generation of a protective CrAlN layer to diminish the inward oxygen diffusion, as well as facilitating the formation of the dense internal oxide layer Al 2O 3 and Cr 2O 3.
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Research context
OpenAlex topics: Metal and Thin Film Mechanics · High-Temperature Coating Behaviors · Intermetallics and Advanced Alloy Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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