To　seek　of　the　superior　corrosion　protection　and　tremendous　mechanical　properties　of　metallic　materials　is　still　prominently　needed.　The　electrochemical　co-deposition　is　one　of　the　most　applied　techniques　to　prepare　the　corrosion　resistance　coatings　on　to　the　mild　steel　including　carbon　nanotubes　(CNT)　and　graphene　reinforced　nanocomposites　with　enhanced　mechanical　properties.　Nickel-graphene　metal　matrix　nanocomposite　coatings　have　been　produced　by　electrochemical　co-deposition　method　from　a　Watt＇s　electrolyte.　The　effect　of　graphene　concentration　in　electrolyte　on　the　morphology,　microstructure　mechanical　properties　and　corrosion　resistance　performance　of　nanocomposite　coatings　have　been　studied.　Ni/graphene　nanocomposite　coating　exhibits　the　spheres　like　morphology　with　enhanced　micro　hardness,　reduced　grain　size　and　superior　corrosion　resistance,　owing　to　the　inherit　tremendous　mechanical　properties　and　2D　nanosize　of　graphene　nanosheets.　Thickness　of　the　composite　coatings　are　significantly　increased　with　the　addition　of　graphene　nanosheets.　Furthermore,　the　change　in　morphology,　mechanical　and　corrosion　resistance　properties　by　varying　the　graphene　content　are　also　thoroughly　evaluated.　(C)　2018　Elsevier　B.V.　All　rights　reserved.