Abstract
Cu-W composites with good mechanical properties, electrical properties and corrosion resistance are still rare. In this study, Y2O3 reinforced Cu-10W composites were prepared by spark plasma sintering. The effects of different Y2O3 contents on the corrosion resistance of Cu-10W composites were studied by static immersion corrosion and electrochemical corrosion. The results show that, the incorporation of Y2O3 makes the microstructure of Cu-10W composites dense and grain refinement. The minimum weight loss value can be obtained when Y2O3 content is 2 wt%. Y2O3 can effectively increase the self-corrosion potential and corrosion current density of Cu-10W composites and enhance the electrochemical impedance level. And Y2O3 can increase the resistivity ring radius, which leads to the increase of charge transfer resistance Rct and the decrease of Warburg impedance Zw.
Published Version
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