利用磁控溅射技术在铸造Ni32Co23Cr8A12Si合金上溅射了相同成分的纳米晶涂层.900℃氧化试验结果表明溅射Ni32Co23Cr8A12Si纳米晶涂层由于晶粒尺寸细小,促进了保护性氧化物形成元素Al向氧化前沿的快速扩散和保护性A12O3层的快速形成,使得溅射Ni32Co23Cr8A12Si纳米晶涂层表现出更优异的抗氧化性能.
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