Abstract：The gradient tritium permeation barrier was fabricated on CLAM steel substrate by hot dip aluminizing (HDA) and subsequent high–temperature diffusion treatment. The effect of Ce element on the microstructure and properties were investigated systematically. The Fe–Al layer with larger thickness and conspicuous serrated interface bonding with the substrate was achieved and the bonding strength of the coating was improved when the content of Ce increase. The gradient distribution of aluminized coating from surface to inter was obtained after thermal diffusion at 850 ℃for 4 h, the gradient coating reduces the thermal stress effectively. The result of the coating properties indicates that the thermal shock resistance and oxidation resistance at high temperature of the coating were also improved with the addition of Ce element.
张惠 周欢 李宁 柳林. Ce对热浸Al防氚渗透涂层结构及性能的影响[J]. 金属学报, 2011, 47(12): 1527-1534.
ZHANG Hui ZHOU Huan LI Ning LIU Lin. EFFECT OF Ce ON MICROSTRUCTURE AND PROPERTIES OF HOT DIP ALUMINIZED TRITIUM PERMEATION BARRIER. Acta Metall Sin, 2011, 47(12): 1527-1534.