Corrosion Resistance of Fe-B Alloys Immersed in Molten Zinc Bath
Fe-B alloys with different boron contents were dipped into a pure molten zinc bath to investigate their anti-corrosion property. Scanning electron microscope (SEM) and energy dispersive spectrum(EDS) were used to detect the corrosion products. It is found that the corrosion mechanism of α phase is corrosion and dissolution ,while the Fe2B phase is crack mechanism because of its brittleness and excellent corrosion resistance.The Fe2B phase in eutectic structure can protect the matrix from molten zinc and restrict the reaction of Fe-Zn. With the increase of boron content, the corrosion resistance performance of the alloys improves gradually.
X. M. Cao et al., "Corrosion Resistance of Fe-B Alloys Immersed in Molten Zinc Bath", Advanced Materials Research, Vols. 383-390, pp. 3051-3055, 2012