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Correlative characterization of Zn-Al-Mg coatings by electron microscopy and FIB tomography
Materials Characterization ( IF 4.7 ) Pub Date : 2020-08-01 , DOI: 10.1016/j.matchar.2020.110407
T. Truglas , J. Duchoslav , C. Riener , M. Arndt , C. Commenda , D. Stifter , G. Angeli , H. Groiss

Abstract The microstructure of a hot-dip Zn-Al-Mg anti-corrosion coating on steel was investigated upon quenching during solidification. As expected, at least two different eutectic microstructures were generated and subsequently characterized using scanning and transmission electron microscopy, elemental analysis, and selected area diffraction. The difference was found in the eutectic intermetallic Mg Zn phase, which was identified as MgZn2 and Mg2Zn11, respectively. Based on the experimental results, we developed an image processing algorithm for electron micrographs, which automatically detects the altered eutectic microstructure. Furthermore, a 3D focused ion beam tomography was performed for an in-depth analysis of the phase morphologies at the interface between the different eutectic structures.

中文翻译:

通过电子显微镜和 FIB 断层扫描对 Zn-Al-Mg 涂层的相关表征

摘要 研究了钢表面热浸锌-铝-镁防腐涂层在凝固过程中淬火时的显微组织。正如预期的那样,至少产生了两种不同的共晶微观结构,随后使用扫描和透射电子显微镜、元素分析和选区衍射进行了表征。在共晶金属间化合物 Mg Zn 相中发现了差异,分别被确定为 MgZn2 和 Mg2Zn11。基于实验结果,我们开发了一种用于电子显微照片的图像处理算法,它可以自动检测改变的共晶微观结构。此外,还进行了 3D 聚焦离子束断层扫描,以深入分析不同共晶结构之间界面处的相形态。
更新日期:2020-08-01
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