#7257. Tribological behavior and self-repairing performance of chromium oxide films over multiple thermal cycles from 25 °C to 1000 °C

November 2026publication date
Proposal available till 26-05-2025
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Journal’s subject area:
Mechanical Engineering;
Mechanics of Materials;
Surfaces, Coatings and Films;
Surfaces and Interfaces;
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Abstract:
Chromium oxide film was prepared by multi-arc ion plating; and the as-deposited film was annealed at elevated temperatures. The as-deposited and annealed films were characterized by scanning electron microscopy-energy dispersive spectrometry, high-resolution transmission electron microscopy, and X-ray diffraction. It was found that high-temperature annealing treatment of the as-deposited chromium oxide film generates a unique surface bulge structure, which is due to the segregation and oxidation of the elements in the substrate alloy towards the grain boundaries thereat. The present approach could help to shed light on the development of novel high-performance chromium oxide films with continuous lubricity from room temperature to elevated temperatures of over 1000 °C.
Keywords:
Annealing treatment; Chromium oxide; High-temperature; Low friction coefficient; Multiple thermal cycles; Self-repairing

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