TY - JOUR
T1 - Effect of impurity elements on localized corrosion of zirconium in chloride containing environment
AU - Tsutsumi, Yusuke
AU - Muto, Izumi
AU - Nakano, Shigeyuki
AU - Tsukada, Junichi
AU - Manaka, Tomoyo
AU - Chen, Peng
AU - Ashida, Maki
AU - Sugawara, Yu
AU - Shimojo, Masayuki
AU - Hara, Nobuyoshi
AU - Katayama, Hideki
AU - Hanawa, Takao
N1 - Publisher Copyright:
© 2020 The Author(s). Published on behalf of The Electrochemical Society by IOP Publishing Limited.
PY - 2020/11
Y1 - 2020/11
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85096537216&partnerID=8YFLogxK
U2 - 10.1149/1945-7111/abc5d8
DO - 10.1149/1945-7111/abc5d8
M3 - 学術論文
AN - SCOPUS:85096537216
SN - 0013-4651
VL - 167
JO - Journal of the Electrochemical Society
JF - Journal of the Electrochemical Society
IS - 14
M1 - 141507
ER -
