Influence of cycling frequency on the adherence of chromia scales formed on pure chromium at high temperature

This paper presents the influence of the cycling frequency on the Cr2O3 scale adherence during thermal cycling. Oxidation was performed on pure chromium in air between 800 and 1000 °C. It has been shown that material losses due to spallation are more important for low frequency cycles (20–4 h). It appears that high frequency thermal cycling (1 h–12 min) leads to lower weight loss due to periodical growth stresses relaxation at short intervals and due to the loss of smaller scale pieces.