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Chromium and copper-doped diamond-like carbon (DLC:Cr:Cu) films were deposited on SKH 51 tool steel. We have prepared multilayers of DLC:Cr and DLC:Cu by cathodic arc evaporation process using chromium (Cr) and copper (Cu) target arc sources to provide Cr and Cu in the DLC. Acetylene reactive gases were also activated at a pressure of 5 mTorr to 25 mTorr and a temperature fixed at 180 °C to provide...