Significantly enhanced resistance to SRB corrosion via Fe-based amorphous coating designed with high dose corrosion-resistant and antibacterial elements

•Fe-based amorphous coating with resistance to SRB MIC is firstly reported.•The amorphous coating exhibits homogeneous composition/structure and low porosity.•The coating reduces sessile and planktonic SRB cell numbers.•The icorr of the coating is 1/12 and 1/15 of that of 304SS and X80, respectively.•The live/dead cell images indicate good antibacterial efficacy of the coating. In nature, sulfate-reducing bacteria (SRB) are one of the predominant and most troublesome bacteria associated with microbiologically influenced corrosion. In this work, a specially-designed Fe-based amorphous coating was used to resist SRB corrosion. Results indicated that the designed coating showed superior resistance to SRB corrosion, and the icorr of the coating was about 1/12 and 1/15 of that of 304SS and X80 steel, respectively. Furthermore, the live/dead cell imaging validated good antibacterial efficacy of the Fe-based amorphous coating. Both the obstructed electron transfer and the antibacterial effect were responsible for the superior resistance to SRB corrosion of the coating.