A　nanostuctured　Fe-Al/WC　intermetallic　compound-based　coating　was　produced　by　cold　spraying　of　ball-milled　powder　assisted　with　post-annealing　treatment.　The　microstructure　of　the　as-milled　powder　and　cold-sprayed　coating　was　investigated.　It　was　found　that　the　as-milled　Fe-Al/WC　composite　alloy　powder　had　lamellar　structure　and　the　microstructure　of　the　as-sprayed　coating　depended　significantly　on　the　microstructure　of　as-milled　powder.　A　Fe-Al　intermetallic　phase　was　formed　during　the　annealing　treatment　at　a　temperature　higher　than　500°C.　The　microhardness　of　the　assprayed　coating　reached　680　Hv0.1and　more.　The　effect　of　the　annealing　treatment　on　the　coating　microstructure　and　hardness　was　examined.　©2010　IEEE.