Wear resistance and hot corrosion behaviour of laser cladding Co-based alloy

来源期刊：中国有色金属学报(英文版)2001年第6期

论文作者：张松 张春华 文hau忠 吴维tao 王茂才

文章页码：838 - 842

Key words：laser cladding； Co-based alloy； wear resistance； hot corrosion

Abstract: 2Cr13 stainless steel was surface cladded with Co-based alloy using a high power carbon dioxide laser. The microstructure, wear resistance and corrosion properties of the clad layer were investigated. It is found that the high temperature corrosion behavior and wearing resistant property of the clad layer are 3 and 2.5 times higher than those of the parent metal. Under the high temperature molten lead sulphate salt corrosion condition, the clad layer fails by spalling which is caused by intergrannular corrosion within the clad layer. The fine dendritic structure and the oxide help to retard the penetration of the sulphur ion that induces the intergrannular corrosion.