Electrodeposition of Cu-Re alloy thin films

The electrodeposition of copper-rhenium alloys from Cu(II) and Re(IV) solut ions was studied in an aqueous H,SO, matrix. Different substrates have been used (glassy carbon, titanium and gold), and the effect of them on the ele ctrochemical behavior of the studied ions is shown. Cyclic voltammetry was used in conjunction with oscillating quartz crystal nanogravimetry to delin eate features in the voltammograms accompanied by mass loss or gain at the electrode surface, from those attributable to the solution phase. The obtai ned Cu-Re films were subjected to scanning electron microscopy (SEM). energ y dispersive X-ray analysis (EDX) and X-ray diffraction analysis (XRD). The rhenium content increases as the potential was made more cathodic, reachin g a maximum value of 10% atomic composition. The films were amorphous with a cauliflower structure. (C) 2001 Published by Elsevier Science B.V. All ri ghts reserved.