添加Ca提高高强度Mg-Zn-Y合金的耐蚀性

IF 1.5 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Engineering, Science and Technology Pub Date : 2022-09-30 DOI:10.1080/1478422X.2022.2127637

D. Wan, Yu Wang, Shaoyun Dong, Y. Xue, G. Han, Fan Yang, Hao Tang, Jie Kang, Guanmei Zeng, Junwen Xu

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引用次数: 1

摘要

选择具有长周期堆积有序相（LPSO）的高强度Mg-Zn-Y合金作为基体合金，在其中加入不同的Ca，用X射线衍射仪（XRD）和扫描电子显微镜（SEM）对合金的相组成和微观结构进行了检测。通过添加Ca，发现了一种新的相，即Ca2Mg6Zn3。析氢腐蚀方法和电化学测试表明，不添加Ca的析氢量是添加Ca的两倍。当Ca的添加量增加时，镁合金的耐腐蚀性提高。为了了解动态腐蚀过程，我们浸泡了Mg97Zn1Y2-Xwt-%Ca（X = 0，0.1，0.3，0.6，1）合金在3.5wt-%NaCl溶液中的2，6，12 h.观察到，随着Ca含量的增加，合金的腐蚀程度逐渐降低，覆盖合金表面的颗粒状腐蚀产物的数量也减少。

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Improving corrosion resistance of high strength Mg-Zn-Y alloy through Ca addition

ABSTRACT High-strength Mg-Zn-Y alloy with a long-period stacking ordered (LPSO) phase was chosen as the base alloy, and different Ca were added to it. The phase component and microstructure of the alloys were examined using diffraction of X-rays (XRD) and scanning electron microscopy (SEM). A new phase, Ca2Mg6Zn3, was found to be formed by the addition of Ca. The hydrogen evolution corrosion method and an electrochemical test showed that the amount of hydrogen evolution without Ca addition was twice that with Ca addition. The corrosion resistance of the magnesium alloy improved when the amount of Ca added was. In order to understand the dynamic corrosion process, we soaked Mg97Zn1Y2-X wt-% Ca (X = 0, 0.1, 0.3, 0.6, 1) alloy in 3.5 wt-% NaCl solution for 2, 6, 12 h. It was observed that with an increase in the Ca content, the degree of corrosion of the alloy gradually decreased, and the amount of granular corrosion products covering the alloy’s surface also decreased.

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来源期刊

Corrosion Engineering, Science and Technology 工程技术-材料科学：综合

CiteScore

3.20

自引率

5.60%

发文量

审稿时长

3.4 months

期刊介绍： Corrosion Engineering, Science and Technology provides broad international coverage of research and practice in corrosion processes and corrosion control. Peer-reviewed contributions address all aspects of corrosion engineering and corrosion science; there is strong emphasis on effective design and materials selection to combat corrosion and the journal carries failure case studies to further knowledge in these areas.