Two　kinds　of　cored　wires　were　used　to　deposit　coatings　containing　amorphous　phase　and　nanocrystalline　grains　by　arc　spraying.　The　microstructure　characteristics　of　the　coatings　were　conducted　by　scanning　electron　microscopy　(SEM),　transmission　electron　microscopy　(TEM),　electron　probe　micro-analyzer　(EPMA)　and　X-ray　diffraction　(XRD).　The　microstructures　of　the　both　coatings　had　lamellar　morphologies.　Both　coatings　consisted　of　Fe　rich　matrix　and　several　kinds　of　borides.　The　Fe　rich　matrix　had　a　majority　amorphous　phase　regions　with　a　fraction　of　nanocrystalline　grains.　The　coatings＇　microhardness　values　for　NiB　coating　is　950　HV(100　g)　and　for　NiB-Cr3C2　coating　is　1090　HV(100　g).　Compared　with　the　reference　sample　of　Q235　steel,　the　coatings　showed　a　much　higher　wear　resistance,　and　the　relative　wear　resistance　of　the　NiB　coating　is　10　times　while　the　NiB-Cr3C2　coating　is　13(.)3　times　higher　than　that　of　Q235　steel.