Abstract
Samples of Cu-Te-Se alloys, previously aged or treated as a solid solution, were immersed in 3.5% (mass fraction) sodium chloride solution to investigate their corrosion resistance at room temperature by determining their corrosive weight loss. The morphologies of the precipitated phase and surface products following immersion were observed by scanning electron microscope. In addition, energy-dispersive spectroscopic analysis was used to determine the elemental constituents of precipitated phase and corroded surface of the alloy samples. The phase composition was measured by x-ray diffraction, and the electrochemical polarization behavior of the samples was determined using an electrochemical workstation. The experimental results revealed that the alloy samples appeared to corrode uniformly, which was accompanied by a small amount of localized corrosion. There was the possibility that localized corrosion could increase following aging treatment. The addition of a small amount of tellurium and selenium to the alloy appeared to retard oxygen adsorption on the copper in the alloy, which has ameliorated the alloy corrosion due to the similar physical and chemical properties of oxygen. In comparison to the solid solution state, the corrosion resistance of the alloy appeared to decline slightly following aging treatment.
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The authors thank the Project (2012BAE06B01-04) supported by the National Science & Technology Pillar Program of China.
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Jiao, L., Li, M., Zeng, T. et al. Study on Corrosion Performance of Cu-Te-Se Alloys in a 3.5% Sodium Chloride Solution. J. of Materi Eng and Perform 24, 4333–4339 (2015). https://doi.org/10.1007/s11665-015-1741-5
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DOI: https://doi.org/10.1007/s11665-015-1741-5