Iron-based Arc Spraying Cored Wire with Chlorine Corrosion and Oxidation Resistance

A flux cored wire is developed by 304L stainless steel-strip wrapping metal powder composed of Ni,Cr,Al,Mo and rare earth elements,and the self-developed wire was sprayed by arc spraying to prepare the iron-based coating.The effects of the alloying elements on the high temperature chlorine corrosion and high temperature oxidation resistance was studied,and the performance was compared with the traditional Ni-Cr-Ti coating(PS45).It is shown that the oxidation resistance of Cr is better than Ni.In chlorine corrosion environments,Ni has better corrosion resistance than Cr.The corrosion resistance is improved by adding appropriate amount of Al and Mo element.The LJ-1 coating has excellent high temperature chlorine corrosion that is 0.74 times the PS45 coating and high temperature oxidation resistance that is 0.67 times the PS45 coating under 650 ℃.However,the cost of the coating is reduced significantly,and the value is good.