The　corrosion　behavior　of　cast　Fe-B　alloys　in　a　liquid　zinc　bath　was　examined.　As　a　result,　the　as-cast　Fe-3.5B　alloy　displays　the　best　corrosion　resistance　in　all　tested　specimens　owing　to　its　netlike　structure　of　eutectic　Fe2B　against　the　liquid　zinc.　XRD　and　EDS　results　indicate　that　the　main　phases　in　the　corrosion　layer　are　determined　to　be　delta,zeta　and　eta　from　the　matrix　to　the　zinc　zone,　respectively.　The　corrosion　process　is　controlled　by　the　diffusion　of　zinc　atoms　and　the　dissolution　mechanism.　According　to　the　observations,　only　three　steps　occur　in　the　whole　dissolution　process:　the　preferential　dissolution　of　alpha-Fe,　the　formation　of　intermetallic　compounds,　and　the　spalling　of　Fe2B　caused　by　cracks　that　mainly　result　from　the　internal　stress　produced　by　Fe/Zn　phase　transformation.　The　continuous　netlike　Fe2B　phase　delays　the　further　reaction　of　Fe/Zn　and　hinders　the　diffusion　of　zinc　atoms　between　the　substrate　and　liquid　zinc　effectively,　improving　corrosion　resistance　of　Fe-B　alloy　in　comparison　with　1Crl8Ni9Ti　stainless　steel.　(C)　2010　Elsevier　Inc.　All　rights　reserved.