Effect of Fe3+ ions on the thermal and optical properties of the ceramic coating grown in-situ on AZ31 Mg Alloy
Effect of Fe3+ ions on the thermal and optical properties of the ceramic coating grown in-situ on AZ31 Mg Alloy
复制标题
Fe3离子对AZ31镁合金原位生长陶瓷涂层热学和光学性能的影响
DOI：
10.1016/j.matchemphys.2012.04.015
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发表时间：
2012-07-16
影响因子：
4.6
通讯作者：
Zhao, Guimei
中科院分区：
文献类型：
--
作者：
Lu, Songtao;Qin, Wei;Zhao, Guimei
研究了Fe 2-（SO 4）3对AZ 31镁合金表面陶瓷涂层热性能和光学性能的影响。在含有不同浓度Fe-2（SO 4）（3）的电解液中通过等离子体电解氧化（PEO）获得不同的陶瓷涂层。采用扫描电子显微镜（SEM）、X射线光电子能谱（XPS）、X射线衍射（XRD）、紫外-可见-近红外（UV-VIS-NIR）分光光度计和红外反射仪等分析手段，研究了涂层的微观结构、元素分布、成分以及热性能和光学性能。结果表明，所制备的涂层均以MgO为主，并含有微量的Fe 3 O 4，Fe进入MgO晶体结构中。随着Fe 2-（SO 4）（3）浓度的增加，太阳吸收率和红外发射率先增加后保持稳定。我们发现，在浓度为8 g L-1，涂层具有最高的太阳能吸收率（0.94）和红外发射率（0.83）。我们的研究结果表明，用这种方法形成的涂层可能是有用的作为热控制涂层在各种应用中，如在航天器。(C)2012爱思唯尔有限公司版权所有。
This research investigates the effect of Fe-2(SO4)(3) on the thermal and optical properties of the ceramic coatings formed on AZ31 Mg alloy. The different ceramic coatings were obtained by plasma electrolytic oxidation (PEO) in electrolytes that contain varied concentrations of Fe-2(SO4)(3). The microstructure, element distribution, composition as well as the thermal and optical properties of the coatings were studied with scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), X-ray Diffraction (XRD), UV-VIS-NIR spectrophotometer and infrared reflectometer. The results show that all of the coatings prepared were mainly composed with MgO, with trace-amount of Fe3O4 presents and Fe seems entered into the MgO crystal structure. With the increasing of the concentration of Fe-2(SO4)(3), the solar absorptance and infrared emittance increased initially but then remain stable. We found that at the concentrations 8 g L-1, the coating has the highest solar absorptance (0.94) and infrared emittance (0.83). Our results show that coatings formed with this method could be useful as a thermal control coating in a variety of applications, such as in the spacecraft. (C) 2012 Elsevier B.V. All rights reserved.