Fe-based amorphous metallic glasses are considered to be extremely viable candidates as surface protective coatings owning to their high crystallization temperature, superior corrosion and wear resistance, good magnetic properties, and relatively low material cost. However, amorphous phase is a non-equilibrium phase, so alloys with high glass forming ability (GFA) would be favorable for forming and retaining fully amorphous phase coatings via thermal spraying processes. Recently, a series of Fe-based bulk metallic glasses with high GFA have been found in Fe–(Cr, Mo)–(C, B) alloy system, leading to obtain amorphous metallic coatings more easily for satisfying engineering needs. In this paper, a Fe48Cr15Mo14C15B6Y2 alloy, with high GFA and excellent corrosion resistance, was selected to produce amorphous phase coating through HVOF spraying method. The microstructural characteristics of the amorphous coatings obtained under different spraying parameters were investigated, and the comprehensive corrosion behavior of the coatings in different solutions were also examined.
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