摘要：

Three massive nickel or cobalt based coating were prepared by laser cladding,and their corrosion behaviors were investigated in 10 g/L,20 g/L and 30 g/L sulphuric acid.And the wear performance was also studied.The results show that the corrosion rate of the 1# nickel based cladding is highest in these sulphuric acids,whereas the 3# cobalt based cladding is lowest,and the 2# nickel based cladding has a close corrosion performance to the 3# cobalt based cladding.The corrosion resistance of the three claddings decrease when the concentration of sulphuric acid increases.It is found that the 3# cobalt based cladding exhibits the best wear resistance and its relative wear resistance is 37.7 times and 19 times larger than that of 1# and 2#,respectively.

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