TY - JOUR
T1 - The electrical impedance response of steel surface oxide layers in molten lead-bismuth eutectic
AU - Stubbins, James F.
AU - Bolind, Alan Michael
AU - Chen, Xiang
N1 - Funding Information:
The authors would like to thank Ning Li and R. Scott Lillard from Los Alamos National Laboratory for their support and research guidance and contributions. Also, Eric P. Loewen (now at GE Energy) contributed valuable experimental expertise. This research was funded by a grant from Los Alamos National Laboratory (Contract No. 57384-001-02 8).
PY - 2008/6/30
Y1 - 2008/6/30
N2 - Stainless steel 316L samples were preoxidized and then immersed in molten lead-bismuth eutectic (LBE) alloy at 200 °C. The changes in their electrical impedance responses were observed over time. Negligible impedance magnitudes were observed at first, followed by a rapid increase to thousands of ohm-cm2. The impedance response is sensitive to changes in the immersed sample area. Micro-indentations on samples caused their impedance magnitudes to decrease initially, but the magnitudes recovered within a few days. SEM analysis showed that the indentations were still present and visible even after the recovery of impedance response, demonstrating that the physical features of the oxide layers which govern the electrical response must be smaller than the micrometer length scale.
AB - Stainless steel 316L samples were preoxidized and then immersed in molten lead-bismuth eutectic (LBE) alloy at 200 °C. The changes in their electrical impedance responses were observed over time. Negligible impedance magnitudes were observed at first, followed by a rapid increase to thousands of ohm-cm2. The impedance response is sensitive to changes in the immersed sample area. Micro-indentations on samples caused their impedance magnitudes to decrease initially, but the magnitudes recovered within a few days. SEM analysis showed that the indentations were still present and visible even after the recovery of impedance response, demonstrating that the physical features of the oxide layers which govern the electrical response must be smaller than the micrometer length scale.
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U2 - 10.1016/j.jnucmat.2008.02.091
DO - 10.1016/j.jnucmat.2008.02.091
M3 - Article
AN - SCOPUS:44649157030
SN - 0022-3115
VL - 377
SP - 243
EP - 252
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
IS - 1
ER -