| Effects of bentonite content on the corrosion evolution of low carbon steel in simulated geological disposal environment | |
| Wei, Xin1; Dong, Junhua1; Chen, Nan2; Yadav, Amar Prasad2,3; Ren, Qiying2; Wei, Jie1; Wang, Changgang1; Ma, Rongyao1; Ke, Wei2 | |
| Corresponding Author | Dong, Junhua(jhdong@imr.ac.cn) |
| 2021-03-10 | |
| Source Publication | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
 |
| ISSN | 1005-0302 |
| Volume | 66Pages:46-56 |
| Abstract | The effects of bentonite content on the corrosion behavior of low carbon steel in 5 mM NaHCO3 + 1 mM NaCl + 1 mM Na2SO4 solution were investigated by electrochemical measurements combined with X-ray diffraction (XRD) and scanning electron microscopy (SEM). In the initial immersion stage, the cathodic process of low carbon steel corrosion was dominated by the reduction of dissolved oxygen, while it transformed to the reduction of ferric corrosion products with the immersion time. The presence of bentonite colloids could suppress the cathodic reduction of oxygen due to their barrier effect on the diffusion of oxygen. However, the barrier performance of bentonite layer was gradually deteriorated due to the coagulation and separation of bentonite colloids caused by the charge neutralization of iron corrosion products dissolved from the steel substrate. More bentonite colloids could maintain the barrier effect for a long time before it was deteriorated by the accumulation of corrosion products. Conversely, it could lose the performance completely, and the corrosion behavior of low carbon steel reverted to the same as that in the blank solution. (C) 2021 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology. |
| Keyword | Low carbon steel Bentonite Electrochemical measurements Corrosion products Corrosion evolution |
| Funding Organization | National Natural Science Foundation of China |
| DOI | 10.1016/j.jmst.2020.04.071 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[51701222] ; National Natural Science Foundation of China[U1867216 and51471175] |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000610200200006 |
| Publisher | JOURNAL MATER SCI TECHNOL |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/159124 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Dong, Junhua |
| Affiliation | 1.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Environm Corros Ctr Mat, Inst Met Res, Shenyang 110016, Peoples R China 3.Tribhuvan Univ, Cent Dept Chem, Kathmandu, Nepal |
| Recommended Citation GB/T 7714 | Wei, Xin,Dong, Junhua,Chen, Nan,et al. Effects of bentonite content on the corrosion evolution of low carbon steel in simulated geological disposal environment[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2021,66:46-56. |
| APA | Wei, Xin.,Dong, Junhua.,Chen, Nan.,Yadav, Amar Prasad.,Ren, Qiying.,...&Ke, Wei.(2021).Effects of bentonite content on the corrosion evolution of low carbon steel in simulated geological disposal environment.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,66,46-56. |
| MLA | Wei, Xin,et al."Effects of bentonite content on the corrosion evolution of low carbon steel in simulated geological disposal environment".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 66(2021):46-56. |
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