Abstract:In this work, powder immersion reaction assisted (PIRAC) chromium carbide coatings prepared on Q235 steel at 800 and 900°C were heat‐treated in vacuum at 900 and 1000°C, respectively. The effects of heat treatments on the phase compositions, microhardness, and oxidation behavior in the air of the as‐prepared PIRAC chromium carbide coatings were investigated. Under further heat treatments, Cr23C6 in the chromium carbide coatings was carburized due to the diffusion of carbon and transformed into Cr3C2 and Cr7C3 … Show more
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