Both　CrN　hard　coatings　and　CuNiIn　solid　lubricating　films　were　produced　on　the　titanium　alloy　substrate　by　the　ion　beam　enhanced　deposition　(IBED)　technique.　The　electrochemical　corrosion　behavior　and　galvanic　corrosion　sensitivity　of　the　IBED　films　and　titanium　alloy　in　NaCl　solution　were　studied　by　using　electrochemical　measurement　methods.　The　oxidation　resistance　of　the　IBED　films　was　evaluated　by　the　elevated　temperature　static　oxidation　method.　The　results　show　that　both　the　electrochemical　corrosion　resistance　and　the　oxidation　resistance　of　IBEDD　CuNiIn　film　are　better　than　those　of　bulk　copper.　IBED　CuNiIn　film　is　contact　compatible　with　titanium　alloy　substrate　in　Cl-　solution.　IBED　CrN　film　has　good　corrosion　resistance　compared　with　the　titanium　alloy　in　both　Cl-　solution　and　HCl　+　HF　mixed　acid　solution,　it　can　directly　contact　with　titanium　alloy　in　Cl-　solution.　The　oxidation　resistance　of　CrN　film　is　better　than　that　of　the　titanium　alloy　substrate.