Passivation of cold-sprayed zinc-coated steel bars in simulated concrete pore solution
文献类型：期刊论文
| 作者 | Fan, Liang4; Li, Peng2,3,4; Shen, Wei2; Sun, Baoyin1 |
| 刊名 | JOURNAL OF BUILDING ENGINEERING
 |
| 出版日期 | 2024-07-15 |
| 卷号 | 89页码:18 |
| 关键词 | Cold-sprayed zinc technology Corrosion Steel bars Concrete pore solution Passivation |
| DOI | 10.1016/j.jobe.2024.109365 |
| 通讯作者 | Shen, Wei(shenwei431@gxu.edu.cn) |
| 英文摘要 | Hot-dip galvanized coating is proved to be effective in preventing chloride ion induced corrosion on steel bars, however, highly-toxic substances generated during the plating process seriously pollute the surrounding environment. Cold-sprayed zinc as an environment-friendly technology is an alternative to the hot-dip galvanized technology, but it has not been applied to steel bars in the alkaline environment of concrete. This study first fabricated the cold-sprayed zinc-coated steel bars, and then investigated the influences of Ca2+ concentration and pH on the passivation of zinc-coated steel bars in the simulated concrete pore solutions through electrochemical tests, microstructure examination, and element composition analysis. The experimental results show that passive film can be generated on the surface of cold-sprayed zinc-coated specimens in the simulated concrete pore solutions with pH = 12.5 and Ca2+ concentration above 0.8 g/L, but Ca2+ concentration determines the density and quality of the passive film. The passive film can resist the attack of chloride ions up to 0.2 mol/L. Compared with hot-dip galvanized coating, more large-sized and compacted crystals are generated on the surface of cold-sprayed zinc coating. Thus, it is feasible to apply cold-sprayed zinc technology to provide corrosion protection for steel bars in the concrete. |
| WOS关键词 | GALVANIZED STEEL ; CORROSION ; PH ; BEHAVIOR |
| 资助项目 | Guangxi Science & Technology Bases and Talents Special Program[AD21220050] ; Guangxi Science & Technology Bases and Talents Special Program[AA23026007] ; Guangxi Science & Technology Bases and Talents Special Program[AA23026011] ; Taishan Scholars Program, Shandong Excellent Youth Science Foundation Program[2023HWYQ-100] ; Qingdao Natural Science Foundation Program[23-2-1-94-zyyd-jch] |
| WOS研究方向 | Construction & Building Technology ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001294699400001 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/199616]  |
| 专题 | 海洋研究所_海洋腐蚀与防护研究发展中心 |
| 通讯作者 | Shen, Wei |
| 作者单位 | 1.Hohai Univ, Sch Civil & Transportat Engn, Nanjing 210024, Peoples R China 2.Guangxi Univ, Sch Civil Engn & Architecture, State Key Lab Featured Met Mat & Life cycle Safety, Nanning 530004, Guangxi, Peoples R China 3.Guangxi Acad Sci, Inst Marine Corros Protect, Guangxi Key Lab Marine Environm Sci, Nanning 530007, Peoples R China 4.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Fan, Liang,Li, Peng,Shen, Wei,et al. Passivation of cold-sprayed zinc-coated steel bars in simulated concrete pore solution[J]. JOURNAL OF BUILDING ENGINEERING,2024,89:18. |
| APA | Fan, Liang,Li, Peng,Shen, Wei,&Sun, Baoyin.(2024).Passivation of cold-sprayed zinc-coated steel bars in simulated concrete pore solution.JOURNAL OF BUILDING ENGINEERING,89,18. |
| MLA | Fan, Liang,et al."Passivation of cold-sprayed zinc-coated steel bars in simulated concrete pore solution".JOURNAL OF BUILDING ENGINEERING 89(2024):18. |
入库方式： OAI收割
来源：海洋研究所
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