Structure and corrosion behavior of iron-based metallic glass coatings prepared by LPPS

► We prepared a series of iron-based metallic glass coatings by low pressure plasma spraying at different hydrogen flow rates. ► Increasing hydrogen flow rate will improve the denseness of coatings. ► Increase of hydrogen flow rate could lead to phase transformation of coatings from amorphous to partial crystallization. ► All coatings show superior corrosion resistance to cast 316L stainless steel. ► The coating with partial crystallization exhibits better corrosion resistance and higher hardness than amorphous coatings.