Impact Factor:

8.2

DOI number:

10.1016/j.corsci.2025.112705

Journal:

Corrosion Science

Abstract:

Co-29Cr-7W-5Si (wt%) was prepared via high-velocity oxygen-fuel system. Its oxidation behavior at 1100 °C in air containing water vapour was investigated. The oxidation kinetics of the coatings for 150 h was established using classical oxidation theory. After multiple cycles of thermal shock oxidation followed by water quenching, a dense Cr2O3 protective layer was formed on the surface of the coating, beneath which a SiO2 pinning layer was generated. Although this significantly enhanced its oxidation resistance, longitudinal cracks occurred because of thermal stress. After 144 cycles, the cracks underwent filling-type self-healing owing to rapid diffusion and oxidation.

Indexed by:

Journal paper

Volume:

245

Page Number:

112705

Date of Publication:

2025-02-01

Included Journals:

SCI

Links to published journals:

https://doi.org/10.1016/j.corsci.2025.112705