Anticorrosion properties of textured substrates made of copper-based binary alloys

Resumo

The tendency of some copper-based binary alloys to oxidize has been studied by the thermogravimetry method. It has been established that, apart from their perfect cubic texture and the high strength properties, substrates made of the Cu–Ni, Cu–0.4% Cr, and Cu–1.6% Fe alloys also possess better anticorrosion properties at the temperature of the deposition of the epitaxial layers (700°C) than the substrates of pure copper. In the alloys containing disperse particles of a second phase, the oxidation resistance decreases in the inverse proportion to the particle size. The Cu–0.6% V ribbon, in which the vanadium particles reach a size of several microns, was even less resistant to oxidation than the copper substrate; therefore, it cannot be used for the deposition of functional layers at elevated temperatures.