Achieving superior wear resistance on titanium alloy via large-span heterostructured coatings

YH Wang and DC Zhao and M Chen and YJ Guo and C Man and ZY Cui and L Wang and HZ Cui, MATERIALS RESEARCH LETTERS, 13, 429-437 (2025).

DOI: 10.1080/21663831.2025.2466780

Enhancing the wear resistance of titanium alloys has always been a key challenge in improving their engineering applications. In this study, we introduce a novel strategy for achieving superior wear resistance on titanium alloy via large-span heterostructured (LSH) coatings. The average wear rates of LSH CrFeAl medium entropy alloy coatings were only 0.42% and 7% of the TC4 substrate at room and 400 degrees C temperature, and also outperformed other related HEA, TiN and WC-reinforced composite coatings. Comprehensive analysis confirmed that the exceptional wear performance is attributed to the gradient grain structure, which effectively accommodates wear-induced deformations and mitigates adhesive wear.

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