A　new　type　of　WC-based　coating　was　prepared　using　a　specially　designed　WC-Co2Cr3　powder.　The　microstructure　and　corrosion　resistance　of　the　present　coating　were　examined　and　compared　with　those　of　the　conventional　WC-10Co-4Cr　coating.　It　was　found　that　Cr　dissolved　homogeneously　in　Co,　WC　and　W2C　phases　in　the　WC-Co2Cr3　coating.　However,　in　the　conventional　coating　Cr　mainly　exists　in　Co.　The　potential　difference　between　the　carbides　and　metallic　binder　was　significantly　decreased　in　the　WC-Co2Cr3　coating　owing　to　Cr　dissolution　in　carbides.　The　resistance　against　the　micro-galvanic　corrosion　is　then　remarkably　enhanced　compared　to　the　conventional　WC-based　coating.