Laser surface remelting of Fe-based alloy coatings deposited by HVOF

► An Fe-based alloy coating applied to corrosion resistance was laser surface remelted. ► Four kinds of typical shapes of laser surface remelting pools were discussed. ► Relationship between remelted alloy height and laser power density was studied. ► Corrosion resistance of coatings before and after laser surface remelting was studied.