التفاصيل البيبلوغرافية
| العنوان: |
Effect of Impurity Elements on Localized Corrosion of Zirconium in Chloride Containing Environment. |
| المؤلفون: |
Yusuke Tsutsumi, Izumi Muto, Shigeyuki Nakano, Junichi Tsukada, Tomoyo Manaka, Peng Chen, Maki Ashida, Yu Sugawara, Masayuki Shimojo, Nobuyoshi Hara, Hideki Katayama, Takao Hanawa |
| المصدر: |
Journal of The Electrochemical Society; Nov2020, Vol. 167 Issue 14, p555-563, 9p |
| مصطلحات موضوعية: |
ZIRCONIUM tetrachloride, ZIRCONIUM alloys, PITTING corrosion, TIN, SURFACE area measurement, ZIRCONIUM, TIN alloys |
| مستخلص: |
To clarify the mechanism of localized corrosion on zirconium in chloride environments, corrosion tests of zirconium and its alloys were performed using conventional and micron-scale measurement systems with surface areas of 0.35 cm² and less than 0.04 cm², respectively. The pitting potential significantly dropped by more than 1 V when zirconium was alloyed with over 10 mol% of tin. Zr4Sn and Zr5Sn3 intermetallics hindered the formation of passive films on the substrate. Additionally, tin was found on the surface of a commercially pure zirconium. From the micron-scale measurement results, the inclusion with the highest concentration of tin (at least 0.44 mol%) in the tested area was selected as the preferential initiation site for pitting corrosion. Thus, tin played an important role in determining the corrosion resistance of zirconium in chloride environments. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
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