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| Electrechemical Corrosion of Nickel-based Alloys with Different Chromium Contents |
| ZHANG Yan, TIAN Miaomiao, LI Mo LIU Lei |
| School of Science, Shenyang Univesity of Technology, shenyang 110023 |
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Cite this article:
ZHANG Yan TIAN Miaomiao LI Mo LIU Lei. Electrechemical Corrosion of Nickel-based Alloys with Different Chromium Contents. Chin J Mater Res, 2011, 25(6): 645-650.
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Abstract Corrosion–resistant performance of Nickel-based alloys with different Cr contents in Cl−ions solution was studied by using electrochemical techniques. The results showed that the resistant of the electrochemical corrosion was improved with the increasing of Cr contents in the Nickel–based alloy. The concentration of the Cl−ion solution had greatly influence on the corrosion resistance of Ni–9Cr, Ni–15Cr and Ni–20Cr alloys. Especially, the corrosion resistance of Ni–9Cr alloy was the most serious in 0.6mol/L NaCl solution. The passive film on the surface of the Nickel-based alloys in 0.6mol/L NaCl solution was analyzed by using the XPS testing technology. It was found that the proportion of Cr–oxide and hydrogen that formed on passive film surface of Ni–30Cr alloy were 4.840 and 4.130 mass percent, respectively, exceeding the other Ni–Cr alloys. Meanwhile, the mechanism of the pitting corrosion for Ni–Cr alloy in the different concentration of NaCl solution was discussed.
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Received: 16 December 2010
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| Fund: Supported by National Nature Science Foundtion of China No.50571108. |
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