WT5BZ>The influence of
additive CeO 2 and SiO 2 with different content on the
thermal shock failure life of
cr 2O 3
coating was studied It is shown that the thermal shock failure mechanism of coating is thermal stress fatigue destruction through thermal shock text The critical temperature range △T C can be greatly enhanced by adding CeO 2 and SiO 2 to Cr 2O 3
layer through reanalysis the results of thermal shock experiment date The addition of
proper amount of CeO 2 to Cr 2O 3 layer obviously increase the coefficient of coating's resistance to thermal shock , but proper amount of SiO 2 to Cr 2O 3 layer greatly increase △T C The choosing additive is based on the serve condition of coating When coating works at temperature being lower 300℃,the adding 3 0% CeO 2 to Ce 2O 3 layer is chosen because which has the best complex property But, when coating works between 300℃ and 500℃, the SiO 2 is chosen as additive to Cr 2O 3 layer, which has longer thermal shock lifetime