The reproducibility of corrosion testing in supercritical water—Results of a second international interlaboratory comparison exercise

M. Edwards; S. Rousseau; R. Novotný; B. Gong; M. Fulger; Sami Penttilä; Aki Toivonen; A. Sàez-Maderuelo; L. Zhang; D. Guzonas; X. Huang

doi:10.1016/j.jnucmat.2022.153759

The reproducibility of corrosion testing in supercritical water—Results of a second international interlaboratory comparison exercise

M. Edwards^*, S. Rousseau, R. Novotný, B. Gong, M. Fulger, Sami Penttilä, Aki Toivonen, A. Sàez-Maderuelo, L. Zhang, D. Guzonas, X. Huang

^*Corresponding author for this work

BA4509 Advanced materials for nuclear energy

Research output: Contribution to journal › Article › Scientific › peer-review

11 Citations (Scopus)

Abstract

Supercritical water-cooled reactor candidate materials are typically corrosion-resistant alloys whose mass changes in supercritical water fluctuate around zero. A previous interlaboratory corrosion experiment exercise revealed large scatter in mass change results between laboratories. Here, we reduced systemic differences between laboratories by unilateral preparation of coupons and unilateral chemical cleaning. Type 310S stainless steel and Alloy 800HT test coupons were exposed for 1000 h to 550 °C, 25 MPa, deaerated water. Average mass loss for 310S and 800HT was 38 ± 26 and 51 ± 31 mg/dm², respectively. Differences in mass transfer, galvanic and local corrosion, and average coupon temperature may explain the poor reproducibility.

Original language	English
Article number	153759
Journal	Journal of Nuclear Materials
Volume	565
DOIs	https://doi.org/10.1016/j.jnucmat.2022.153759
Publication status	Published - Jul 2022
MoE publication type	A1 Journal article-refereed

Funding

This work has been funded by: Atomic Energy of Canada Limited, Federal Nuclear Science and Technology Program. Ministry of Science and Technology of China , Project No. 2018YFE0116200 . NSERC/NRCan/AECL Generation IV Energy Technologies Program Academy of Finland, project IDEA grant decision 260493. This work was carried out as part of a joint activity of the Generation IV International Forum SCWR Materials and Chemistry Project Management Board, with contributions from Canada, Euratom and China. For brevity, not all participants appear in the list of authors. The authors are grateful to many others who participated in these tests, and would like to acknowledge the following individuals: Clinton Mayhew of CNL for work on SEM and EDX, Daniel Petrescu of RATEN for optical microscopy, Catalin Ducu of RATEN for work on SEM. This work has been funded by: Atomic Energy of Canada Limited, Federal Nuclear Science and Technology Program. Ministry of Science and Technology of China, Project No. 2018YFE0116200. NSERC/NRCan/AECL Generation IV Energy Technologies Program Academy of Finland, project IDEA grant decision 260493.

Keywords

High temperature corrosion
Mass loss
Nickel
SEM
Stainless steel

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Edwards, M., Rousseau, S., Novotný, R., Gong, B., Fulger, M., Penttilä, S., Toivonen, A., Sàez-Maderuelo, A., Zhang, L., Guzonas, D., & Huang, X. (2022). The reproducibility of corrosion testing in supercritical water—Results of a second international interlaboratory comparison exercise. Journal of Nuclear Materials, 565, Article 153759. https://doi.org/10.1016/j.jnucmat.2022.153759

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abstract = "Supercritical water-cooled reactor candidate materials are typically corrosion-resistant alloys whose mass changes in supercritical water fluctuate around zero. A previous interlaboratory corrosion experiment exercise revealed large scatter in mass change results between laboratories. Here, we reduced systemic differences between laboratories by unilateral preparation of coupons and unilateral chemical cleaning. Type 310S stainless steel and Alloy 800HT test coupons were exposed for 1000 h to 550 °C, 25 MPa, deaerated water. Average mass loss for 310S and 800HT was 38 ± 26 and 51 ± 31 mg/dm2, respectively. Differences in mass transfer, galvanic and local corrosion, and average coupon temperature may explain the poor reproducibility.",

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Edwards, M, Rousseau, S, Novotný, R, Gong, B, Fulger, M, Penttilä, S, Toivonen, A, Sàez-Maderuelo, A, Zhang, L, Guzonas, D & Huang, X 2022, 'The reproducibility of corrosion testing in supercritical water—Results of a second international interlaboratory comparison exercise', Journal of Nuclear Materials, vol. 565, 153759. https://doi.org/10.1016/j.jnucmat.2022.153759

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AU - Penttilä, Sami

AU - Toivonen, Aki

AU - Sàez-Maderuelo, A.

AU - Zhang, L.

AU - Guzonas, D.

AU - Huang, X.

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The reproducibility of corrosion testing in supercritical water—Results of a second international interlaboratory comparison exercise

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Keywords

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