| MATERIALS AND MATRIX COMPOSITES |
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| Corrosion Behavior of 430 Stainless Steel in Flowing Pb-Bi Alloy at 550 ℃ |
| CHEN Gang, JU Na, LEI Yucheng, WANG Dan, ZHU Qiang, LI Tianqing, CHEN Lu
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| School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China |
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Abstract In order to study the corrosion behavior of 430 stainless steel (430ss) in flowing Pb-Bi alloy at high temperature, corrosion tests of 430ss were performed in the LBE at 550 ℃ for 200 h, 400 h and 600 h with relative velocity of 2.98 m/s. X-ray diffraction (XRD), scanning electron microscope (SEM) and energy dispersive spectrometry (EDS) were carried out to detect the corrosion characteristics of the surface and cross-section of the etched samples. It is found that a compound containing Fe, Cr and O elements formed on the surface of the corrosion samples. The shape of the compound was irregular firstly, and then, the compound grew gradually to assemble the homogeneous oxide layer. The oxide layer could be classified to an outer oxide layer and an inner oxide layer. The double-layer oxide films were composed of magnetite Fe3O4 outer layer with penetration of Pb-Bi and Fe-Cr spinel (Fe,Cr)3O4 inner layer. The outer oxide layer was porous while the inner one was compact. With the increase of corrosion time (0—600 h), the thickness of oxide layers became thicker gradually. The metal exhibited dissolution-corrosion and oxidation-corrosion during the corrosion process.
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Published: 12 March 2020
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| Fund:This work was financially supported by the National Natural Science Foundation of China (51875264). |
| About author:: Gang Chenpursued his doctoral degree in Jiangsu University from September 2015 to June 2019. He is mainly engaged in research on the corrosion of nuclear materials in lead-bismuth eutectic alloys. He has published more than 10 articles in important journals domestically and abroad; Yucheng Lei, born in 1962, Ph.D., professor, and doctoral supervisor, is mainly engaged in the connection technology of advanced materials and the control and simulation of welding process. He has been responsible for a number of Natural Science Foundation of China. He has published more than 150 papers in important journals domestically and abroad, and he has authorized 8 national invention patents. |
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1 Rivai A K, Takahashi M. Journal of Nuclear Materials, 2010, 398, 139.
2 Rivai A K, Takahashi M. Journal of Nuclear Materials, 2010, 398 (1-3), 146.
3 Takahashi M, Ishikawa K, Suzuki T, et al. In: 10th International Conference on Nuclear Engineering. Arlington, 2002, pp.607.
4 Zhang J S, Li N. Journal of Nuclear Materials, 2008, 373, 351.
5 Li N. Journal of Nuclear Materials, 2002, 300, 73.
6 Wu Y C, Huang Q Y, Bai Y Q, et al. Nuclear Science and Engineering, 2010, 30 (3), 238 (in Chinese).
吴宜灿, 黄群英, 柏云清,等. 核科学与工程, 2010, 30 (3), 238.
7 Chen G, Lei Y C, Zhu Q, et al. Journal of Nuclear Materials, 2019, 515, 187.
8 Chen G, Lei Y C, Zhu Q, et al. Corrosion, DOI:org/10.5006/3066.
9 Li T Q, Gu J, Lei Y C, et al. Transactions of the China Welding Institution, 2016, 37 (11), 19 (in Chinese).
李天庆, 顾俊, 雷玉成, 等. 焊接学报, 2016, 37 (11),19.
10 Huang F, Lei Y C, Lu C, et al. Welding Technology, 2016, 45 (5), 111 (in Chinese).
黄飞, 雷玉成, 陆超, 等. 焊接技术, 2016, 45 (5), 111.
11 Kurara Y, Futakawa M, Kikuchi K, et al. Journal of Nuclear Materials, 2002, 301, 28.
12 Kurara Y, Futakawa M, Saito S. Journal of Nuclear Materials, 2005, 343 (1), 333.
13 Kurara Y, Futakawa M, Saito S. Journal of Nuclear Materials, 2008, 373 (1-3), 164.
14 Kondo M, Takahashi M, Sawada N, et al. Journal of Nuclear Materials, 2006, 43 (2), 107.
15 Concetta F. Handbook on lead-bismuth eutectic alloy and lead properties, materials compatibility, thermal-hydraulics and technologies, Nuclear Energy Agency, France, 2015.
16 Schroer C, Wedemeyer O, Novotny J, et al. Corrosion Science, 2014, 84, 13.
17 Zhang J S, Li N. Corrosion Science, 2007, 49 (11), 4154.
18 Chen H J, Chen Y, Zhang J S. Progress in Nuclear Energy, 2008, 50 (2), 587. |
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2020, Vol. 34 
