coatings　with　a　composition　of　Fe48Cr15Mo14C15B6Y2　were　prepared　by　means　of　high　velocity　oxygen　fuel　(HVOF)　thermal　spraying　under　different　conditions.　Microstructural　studies　show　that　the　coatings　present　dense　layered　structure　and　low　porosity　with　a　fraction　of　nanocrystals　precipitated.　The　porosity　and　fraction　of　the　coatings　decrease　as　the　kerosene　and　oxygen　flow　increase　within　the　parameter　range　examined.　Corrosion　behavior　of　the　amorphous　coatings　was　investigated　by　electrochemical　measurement.　The　results　show　that　the　coatings　are　spontaneously　passivated　with　wide　passive　region　and　low　passive　current　density　in　3.5%　NaCl.　1　N　HCl　and　1　N　H2SO4　solutions.　and　exhibit　an　excellent　ability　to　resist　localized　corrosion.　However,　the　corrosion　resistance　of　the　coatings　decreases　in　1　N　NaOH　solution　with　lower　transpassive　potential　and　passive　region.　In　addition,　the　optimal　spraying　parameter　improves　the　corrosion　resistance　of　the　amorphous　coatings　obviously　due　to　the　proper　proportion　of　porosity　and　amorphous　fraction.　(C)　2009　Elsevier　B.V.　All　rights　reserved.