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Ce-Zr compounds such as Ce0.68Zr0.32O2 solid solution, Ce/Zr nitrate and CeO2/ZrO2 were added into γ-alumina-based slurries, which were then loaded on FeCrAl foils pretreated at 950°C and 1100°C. The microstructures and adhesion performance between the substrates and the washcoats were measured by SEM, BET surface area, ultrasonic vi- bration and thermal shock test. The results show that the addition of Ce0.68Zr0.32O2 solid solution, Ce/Zr nitrate and CeO2/ZrO2 into the slurries can improve γ-Al2O3-based washcoat adhesion on FeCrAl foils. Furthermore, ceria-zirconia solid solution increases the adhesion of the washcoat on the surface of an FeCrAl foil than the two others. The specific sur- face area of this washcoat remains about 43-45 m2/g and the weight loss is below 4.0% even after aging test of 10% steam-containing air at 1050°C for 20 h.
Ce-Zr compounds such as Ce 0.68 Zr0.32 O2 solid solution, Ce / Zr nitrate and CeO2 / ZrO2 were added into γ-alumina-based slurries, which were then loaded on FeCrAl foils pretreated at 950 ° C. and 1100 ° C. The microstructures and adhesion performance between the substrates and the washcoats were measured by SEM, BET surface area, ultrasonic vi- bration and thermal shock test. The results show that the addition of Ce 0.68 Zr0.32 O2 solid solution, Ce / Zr nitrate and CeO2 / ZrO2 into the slurries can improve γ-Al2O3-based washcoat adhesion on FeCrAl foils. The specific sur face area of this washcoat remains about 43-45 m2 / g and the weight loss is below 4.0% even after aging test of 10% steam-containing air at 1050 ° C for 20 h.