Nitrate on localized corrosion of carbon steel and stainless steel in aqueous solutions
文献类型：期刊论文
| 作者 | Xu, Weichen1,3,4; Zhang, Binbin1,3,4 ; Deng, Yu2,4; Yang, Lihui1,3,4; Zhang, Jie1,3,4
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| 刊名 | ELECTROCHIMICA ACTA
 |
| 出版日期 | 2021-02-10 |
| 卷号 | 369页码:13 |
| ISSN号 | 0013-4686 |
| DOI | 10.1016/j.electacta.2020.137660 |
| 通讯作者 | Xu, Weichen(w.xu@qdio.ac.cn) ; Zhang, Jie(zhangjie@qdio.ac.cn) |
| 英文摘要 | Nitrate is significant for corrosion process, which has been extensively studied for decades, while some issues remain unclear. Adsorption and reduction mechanisms are widely proposed but separately in literature, and results are inconsistent regarding different corrosion modes and conditions. Adsorption mechanism of nitrate, mostly as competitive adsorption against chloride, is discussed regarding electrode potential, concentration, temperature and alloy composition. However, it has to be based on a premise that nitrate cannot stimulate corrosion, which cannot be fully interpreted by adsorption mechanism. This inadequacy is made up by nitrate reduction mechanism, consuming protons and producing water to lower aggressiveness. Based on these mechanisms, nitrate effect on localized corrosion of carbon steel and stainless steel in aqueous solutions are reviewed in details, including pitting, crevice corrosion and cracking. Nitrate tends to passivate salt-covered pit, but not salt-free pit since proton migration across salt layer is unavailable. However, we suggest that sufficient nitrate may passivate salt-free pit through reduction alone, while further work is required and suggested. Effect of nitrate on crevice corrosion is relatively consistent, which tends to inhibit dissolution against chloride. Nitrate reduction and adsorption are also important for cracking, mostly initiated from intergranular corrosion for carbon steels due to imperfect passivation, and from localized corrosion for stainless steels. Competition between localized corrosion and cracking can interpret inhibitive/non-inhibitive/promoting effect of nitrate. Corrosion products within a local site dissolving in nitrate are also discussed, which inhibit mass transport but enhance stability of dissolution. Nitrate is generally classified as inhibitor but described as dangerous inhibitor. (C) 2020 Elsevier Ltd. All rights reserved. |
| 资助项目 | Natural Science Foundation of Shandong Province, China[ZR2019QEM011] ; National Natural Science Foundation of China[51701101] ; National Natural Science Foundation of China[51501180] ; National Natural Science Foundation of China[41827805] |
| WOS研究方向 | Electrochemistry |
| 语种 | 英语 |
| WOS记录号 | WOS:000612048600009 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/169754]  |
| 专题 | 海洋研究所_海洋腐蚀与防护研究发展中心 |
| 通讯作者 | Xu, Weichen; Zhang, Jie |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China 2.Chongqing Jiaotong Univ, Sch Shipping & Naval Architecture, Chongqing 400074, Peoples R China 3.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao 266071, Peoples R China 4.Pilot Natl Lab Marine Sci & Technol, Open Studio Marine Corros & Protect, Qingdao 266237, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Weichen,Zhang, Binbin,Deng, Yu,et al. Nitrate on localized corrosion of carbon steel and stainless steel in aqueous solutions[J]. ELECTROCHIMICA ACTA,2021,369:13. |
| APA | Xu, Weichen,Zhang, Binbin,Deng, Yu,Yang, Lihui,&Zhang, Jie.(2021).Nitrate on localized corrosion of carbon steel and stainless steel in aqueous solutions.ELECTROCHIMICA ACTA,369,13. |
| MLA | Xu, Weichen,et al."Nitrate on localized corrosion of carbon steel and stainless steel in aqueous solutions".ELECTROCHIMICA ACTA 369(2021):13. |
入库方式： OAI收割
来源：海洋研究所
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