Amorphous　coatings　were　fabricated　by　arc　spraying　and　the　effect　of　the　post　heat　treatment　on　the　microstructure,　and　the　mechanical　properties　of　arc　sprayed　coatings　were　studied.　Post　heat　treatment　was　conducted　in　the　atmospheric　environment　within　the　temperature　ranged　from　500　degrees　C　to　800　degrees　C.　The　microstructure　characteristics　were　analyzed　by　means　of　optical　microscopy　(OM),　X-ray　diffraction　(XRD),　electron　probe　micro-analyzer　(EPMA),　scanning　electron　microscopy　(SEM),　differential　thermal　analysis　(DTA)　and　transmission　electron　microscopy　(TEM).　It　was　found　that　with　the　increase　of　anneal　temperature,　the　microstructure　of　the　sprayed　coatings　had　several　changes　as　follows:　the　reduction　of　porosity,　the　decomposition　and　the　crystallization　of　amorphous　phase,　and　the　formation　of　precipitates.　The　microhardness　of　the　sprayed　coatings　increased　after　the　heat　treatment　and　it　can　reached　to　1275　HV(300g)　at　the　post　treated　at　600　degrees　C.　All　the　coatings　exhibited　an　excellent　abrasive　wear　resistance,　approximately　6　times　higher　than　that　of　the　arc-sprayed　3Cr13　coating.　(C)　2009　Published　by　Elsevier　B.V.