In　order　to　investigate　the　effects　of　boron　concentration　on　the　corrosion　resistance　of　Fe-B　alloys　in　molten　zinc,　Fe-B　alloys,　with　the　boron　concentrations　of　1.5　wt.%,　3.5　wt.%　and　6.0　wt.%　respectively,　were　dipped　into　a　pure　molten　zinc　bath　at　460　degrees　C　and　kept　in　different　time　intervals.　The　results　show　that,　in　comparison　with　1Cr18Ni9Ti　stainless　steel,　Fe-B　alloy　with　3.5　wt.%B　exhibits　excellent　corrosion　resistance,　due　to　the　dense　continuous　network　or　parallel　Fe2B　phase　which　hinders　the　Fe/Zn　interface　reaction　in　Fe-B　alloys.　The　energy　dispersive　spectrum　(EDS)　results　indicate　that　the　coarse　and　compact　delta　phase　with　the　length　about　40　mu　m　generates　near　the　matrix　of　Fe-B　alloy　and　massive　zeta　phase　occurs　close　to　the　liquid　zinc.　The　corrosion　process　includes　Fe/Zn　reaction　and　the　isolation　and　fracture　of　Fe2B.　The　failure　of　boride　is　mainly　caused　by　the　microcrack.　(C)　2009　Elsevier　B.V.　All　rights　reserved.