Knowledge Management System Of Shanghai Institute of Applied Physics, CAS
| Effect of Mg on the Microstructure and Corrosion Resistance of the Continuously Hot-Dip Galvanizing Zn-Mg Coating | |
| Dong, AP; Li, BP; Lu, YL; Zhu, GL; Xing, H; Shu, D; Sun, BD; Wang, J | |
| 2017 | |
| Source Publication | MATERIALS
 |
| ISSN | 1996-1944 |
| Volume | 10Issue:8Pages:- |
| Subtype | 期刊论文 |
| Abstract | The microstructure of continuously hot-dip galvanizing Zn-Mg coating was investigated in order to obtain the mechanism of the effects of Mg on the corrosion resistance. In this paper, the vertical section of the Zn-0.20 wt % Al-Mg ternary phase diagram near the Al-low corner was calculated. The results indicates that the phase composition of the Zn-0.20 wt % Al-Mg ternary phase diagram near the Al-low corner is the same as Zn-Mg binary phase diagram, suggesting Al in the Zn-Mg (ZM) coatings mainly concentrates on the interfacial layer between the coating and steel substrate. The microstructure of continuously hot-dip galvanizing ZM coatings with 0.20 wt % Al containing 1.0-3.0 wt % Mg was investigated using tunneling electron microscopy (TEM). The morphology of Zn in the coating changes from bulk to strip and finally to mesh-like, and the MgZn2 changes from rod-like to mesh-like with the Mg content increasing. Al in the ZM coatings mainly segregates at the Fe2Al5 inhibition layer and the Mg added to the Zn bath makes this inhibition layer thinner and uneven. Compared to GI coating, the time of the first red rust appears increases by more than two-fold and expansion rate of red rust reduces by more than four-fold in terms of salt spray experiment. The ZM coating containing 2.0 wt % Mg has the best corrosion resistance. The enhanced corrosion resistance of ZM coatings mainly depends on different corrosion products. |
| Keyword | Coated Steel Sheet Zinc Behavior Alloys |
| DOI | 10.3390/ma10080980 |
| WOS Keyword | COATED STEEL SHEET ; ZINC ; BEHAVIOR ; ALLOYS |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000408731600134 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.sinap.ac.cn/handle/331007/28626 |
| Collection | 中科院上海应用物理研究所2011-2018年 |
| Recommended Citation GB/T 7714 | Dong, AP,Li, BP,Lu, YL,et al. Effect of Mg on the Microstructure and Corrosion Resistance of the Continuously Hot-Dip Galvanizing Zn-Mg Coating[J]. MATERIALS,2017,10(8):-. |
| APA | Dong, AP.,Li, BP.,Lu, YL.,Zhu, GL.,Xing, H.,...&Wang, J.(2017).Effect of Mg on the Microstructure and Corrosion Resistance of the Continuously Hot-Dip Galvanizing Zn-Mg Coating.MATERIALS,10(8),-. |
| MLA | Dong, AP,et al."Effect of Mg on the Microstructure and Corrosion Resistance of the Continuously Hot-Dip Galvanizing Zn-Mg Coating".MATERIALS 10.8(2017):-. |
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| Effect of Mg on the （8453KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Download | |
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