Laser Modification of Plasma Sprayed Alumina Coating

An alumina coating was developed on mild carbon steel by plasma spraying and then modified by laser remelting.Some characteristics of plasma sprayed ceramic coating before and after laser remelting,such as microstructure,wear resistance, heat shock resistance,hot corrosion property and bond strength,have been investigated in this paper.

激光熔覆陶瓷展结合强度测量与裂纹形成分析

利用声发射方法,测定了金属材料表面喷涂陶瓷层及经激光熔覆陶瓷层与基体的结合强度,并对陶瓷层产生声发射特性进行了探讨,最后分析了激光熔覆陶瓷层形成裂纹的过程。