| 镁含量和硅对铁-锌铝镁合金固-液扩散偶中Fe-Al反应层的影响 |
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| 引用本文： | 马坤,刘亚,涂浩,苏旭平,王建华. 镁含量和硅对铁-锌铝镁合金固-液扩散偶中Fe-Al反应层的影响[J]. 材料导报, 2017, 31(6): 61-65. DOI: 10.11896/j.issn.1005-023X.2017.06.013 |
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| 作者姓名： | 马坤 刘亚 涂浩 苏旭平 王建华 |
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| 作者单位： | 常州大学江苏省材料表面科学与技术重点实验室,常州213164;常州大学江苏省光伏科学与工程协同创新中心,常州213164 |
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| 基金项目： | 国家自然科学基金(51271041) |
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| 摘 要： | 在热浸镀锌中,铁基表面Fe-Al化合物层的形成会影响镀层的生长和质量。将Fe/(Zn-11%Al-3%Mg)和Fe/(Zn-11%Al-x%Mg-0.2%Si)扩散偶在600℃下进行25min的固-液扩散实验,利用扫描电子显微镜(SEM)和能谱仪(EDS)研究了镁含量和硅对铁-锌铝镁合金固-液界面Fe-Al合金层形成的影响。结果表明,Fe/(Zn-11%Al-3%Mg)固-液扩散偶反应层由FeAl3和Fe2Al5相层组成;随着Mg含量的增加,Fe/(Zn-11%Al-x%Mg-0.2%Si)扩散偶中反应层的厚度呈现先增加后减少再增加的变化趋势,当镁含量为3%时反应层厚度最薄;Fe/(Zn-11%Al-3%Mg)扩散偶中Fe-Al反应层的平均厚度比Fe/(Zn-11%Al-3%Mg-0.2%Si)扩散偶中反应层的厚度大60μm,证明Si元素起到抑制Fe-Al反应层形成的作用。研究结果为解释Super Dyma合金镀层中不形成明显的Fe-Al抑制层提供了实验依据。
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| 关 键 词： | 热浸镀锌 固-液扩散偶 界面反应 Fe-Al反应层 |
Effect of Mg Content and Si on Fe-Al Reaction Layer in Solid-Liquid Diffusion Couples of Fe/Zn-Al-Mg Alloys |
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| MA Kun,LIU Y,TU Hao,SU Xuping and WANG Jianhua. Effect of Mg Content and Si on Fe-Al Reaction Layer in Solid-Liquid Diffusion Couples of Fe/Zn-Al-Mg Alloys[J]. Materials Review, 2017, 31(6): 61-65. DOI: 10.11896/j.issn.1005-023X.2017.06.013 |
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| Authors: | MA Kun LIU Y TU Hao SU Xuping WANG Jianhua |
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| Affiliation: | Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou University, Changzhou 213164;Jiangsu Collaborative Innovation Center of Photovolatic Science and Engineering, Changzhou University, Changzhou 213164,Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou University, Changzhou 213164;Jiangsu Collaborative Innovation Center of Photovolatic Science and Engineering, Changzhou University, Changzhou 213164,Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou University, Changzhou 213164;Jiangsu Collaborative Innovation Center of Photovolatic Science and Engineering, Changzhou University, Changzhou 213164,Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou University, Changzhou 213164;Jiangsu Collaborative Innovation Center of Photovolatic Science and Engineering, Changzhou University, Changzhou 213164 and Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou University, Changzhou 213164;Jiangsu Collaborative Innovation Center of Photovolatic Science and Engineering, Changzhou University, Changzhou 213164 |
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| Abstract: | In hot dip galvanization,the formation of Fe-Al compound layer on steel surface affects the growth and quality of coatings.Fe/(Zn-11％Al-3％Mg) and Fe/(Zn-11％Al-x％Mg-0.2％Si) solid-liquid diffusion couples were annealed at 600 ℃ for 25min.Scanning electron microscopy (SEM) and energy dispersive spectrometer (EDS) were adopted to study the effect of Mg content and Si on the formation of Fe-Al reaction layer.The results showed that the reaction layer in Fe/(Zn-11％Al-3 ％Mg) solid-liquid diffusion couple was composed of FeAl3 and Fe2 Al5 phase.With the increase of Mg content,the thickness of the reaction layer in Fe/(Zn-11％Al-x％Mg-0.2％Si) diffusion couple increased firstly,then decreased and increased finally.The thickness of reaction layer was the thinnest when magnesium content was 3 ％.The average thickness of Fe-Al reaction layer in Fe/(Zn-11 ％ Al-3 ％Mg) diffusion couple was obviously larger than that in Fe/(Zn-11 ％Al-3 ％ Mg-0.2 ％Si) diffusion couple,which proved that Si played a role in inhibiting the formation of Fe-Al reaction layer.The results could be used for explaining the reason that there was no obvious Fe-Al inhibition layer forming in the coating of Super Dyma alloy. |
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| Keywords: | galvanization solid-liquid diffusion couple interface reaction Fe-Al reaction layer |
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