CORROSION OF DIAMOND-LIKE CARBON-COATED NICKEL IN 0.25-M SODIUM-CHLORIDE

Diamond-like carbon (DLC) was deposited on to high-purity nickel using an acetylene plasma. The corrosion resistance of coated and uncoated nickel was electrochemically measured in 0.25M NaCl at 22-degrees-C. T his work presents the first report of the deposition of DLC on to nick el and the first potentiodynamic electrochemical testing of DLC. The D LC-coated nickel had a corrosion rate more than two orders of magnitud e less and a corrosion potential 0.22 V greater than those of the unco ated nickel.