[1]苏旭平,刘兆彬,刘亚,等.连续热浸镀Zn-Al合金镀层表面龟纹研究[J].常州大学学报(自然科学版),2017,(02):1-6.[doi:10.3969/j.issn.2095-0411.2017.02.001]
　SU Xuping,LIU Zhaobin,LIU Ya,et al.Research on the Surface Moire of Coating in Continuous Hot-Dip Zn-Al Alloy[J].Journal of Changzhou University(Natural Science Edition),2017,(02):1-6.[doi:10.3969/j.issn.2095-0411.2017.02.001]
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连续热浸镀Zn-Al合金镀层表面龟纹研究()
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常州大学学报(自然科学版)[ISSN:2095-0411/CN:32-1822/N]

卷:
期数:
2017年02期
页码:
1-6
栏目:
材料科学与工程
出版日期:
2017-03-28

文章信息/Info

Title:
Research on the Surface Moire of Coating in Continuous Hot-Dip Zn-Al Alloy
作者:
苏旭平; 刘兆彬; 刘亚; 吴长军
常州大学 材料科学与工程学院,江苏 常州 213164; 江苏省材料表面科学与技术重点实验室(常州大学),江苏 常州 213164; 江苏省光伏科学与工程协同创新中心(常州大学),江苏 常州 213164
Author(s):
SU Xuping;  LIU Zhaobin;  LIU Ya;  WU Changjun
School of Materials Science and Engineering, Changzhou University, Changzhou 213164, China; Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou University, Changzhou 213164, China; Jiangsu Collaborative Innovation Center of Photovolatic Science and Engineering, Changzhou University,Changzhou 213164, China
关键词:
连续热浸镀锌;  龟纹;  η-Zn相;  Zn-Al合金;  Fe-Al化合物
Keywords:
continuous hot-dip galvanizing;  moire;  η-Zn phase;  Zn-Al alloy;  Fe-Al compound
分类号:
TG 174.44
DOI:
10.3969/j.issn.2095-0411.2017.02.001
文献标志码:
A
摘要:
连续热浸镀锌常在锌浴中添加Al元素,以获得所需的镀层,满足工业应用。当Al含量在一定量的范围内,镀层表面出现“龟纹”(网格状)现象,影响镀层表面质量。在锌锅Al的质量分数(名义成分)为2.2%、2.4%、3.3%、4.2%、4.8%和5.2%时,连续热浸镀层均出现了龟纹。通过光学显微镜、扫描电镜能谱仪对出现龟纹的Zn-Al合金镀层表面形貌、成分和截面微观组织进行了分析。结果表明:树枝晶η-Zn相的形核和长大是形成宏观上龟纹结构的主要因素; Al含量的变化直接影响龟纹的大小,Al含量越低,龟纹越明显,Zn-2.2%Al镀层的龟纹最明显; 龟纹区显微组织呈现明显地凹凸不平,其中Zn-4.8%Al龟纹区域相对比较平坦,龟纹最不明显。
Abstract:
Element Al is generally added in zinc bath of continuous galvanizing to get needed coating for industrial application. While the content of A1 is in a certain range, “moire”(square pattern)will form on the surface of coating and affect the quality of thecoating surface.When mass fraction of Alin continuous hot-dip galvanizing bathsare(nominal composition)2.2%,2.4%,3.3%,4.2%,4.8% and 5.2% respectively, surface moire was appeared in the surface coating.Surface morphology, composition, macrostructure and microstructure of section of Zn-Al alloy were analyzed by Light Microscope and Scanning Electron Microscope with Energy Disperse Spectroscopy. The results indicate that; the nucleation and growth of dendriticη-Zn phase are main factors of forming moire on the macro level; Variation of A1 content directly influences length of moire, the lower of the content of A1, the more obvious of the moire, and the most obvious moire of coating is Zn-2.2%Al coating; Themicrostructure of the moire isuneven, the least obvious moire is Zn-4.8%Al which is relatively smoother than others.

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备注/Memo

备注/Memo:
收稿日期:2016-11-28。
基金项目:国家自然科学基金资助项目(51271040, 51271041)。
作者简介:苏旭平(1961—),男,湖南湘潭人,博士,教授,主要从事材料设计、材料表面技术研究。
更新日期/Last Update: 2017-04-01