Abstract
In present work, the immersion and electrochemical corrosion resistance of single-crystal copper with (100), (110), (111) preferred orientation were studied in 3.5 NaCl solution. The scanning electron microscopy and X-ray photoelectron spectroscopy, Laser Raman spectroscopy were used to observe corroded surface morphology and analyze the corroded products. The experimental results show that preferential orientation has a significant effect on the corrosion resistance of single crystal copper. The self-corrosion current densities of (100), (110), and (111) oriented single-crystal copper were 1.1455 μA/cm2,0.7312 μA/cm2 and 1.4117 μA/cm2 respectively. The corrosion resistance was in the order of (110) > (100) >(111). Optimally oriented surface can effectively improve the corrosion resistance of copper.
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