INFLUENCE OF SUPERFICIALLY APPLIED CERIA ON THE GROWTH STRESSES IN ALUMINA SCALES
表面涂覆CeO2对Fe—23Cr—5Al合金上Al2O3膜生长应力的影响

The influence of superficially applied CeQ on the growth stresses in A1203 scales forned on Fe- 23Cr-5A1-0.2113 alloy at 900°C and 1000°C has been investigated by using a modified deflection technique. CeQ coating increased the mass gain of the alloy, pmted the convolution of A1203 scale, and increased the graYth oxide stresses. The creep of the alloy has a less effect on the relaxation of the growth stress in the convoluted scale than on that in the plane scale. Although less spallation of the convoluted scale during cooling, CeQ coating had no clear beneficial effect on the oxidation resistance of Fe-23Cr-5A1 alloy.