6063铝合金微弧氧化陶瓷涂层的显微组织和力学性能（英文）

发布时间：2018-08-31 19:11

【摘要】：以硅酸盐、硼酸盐和铝酸盐为主要溶液,分别在这3种溶液中添加纳米添加剂Al2O3和TiO2以及不添加纳米添加剂,制备6063铝合金的微弧氧化陶瓷涂层。利用扫描电镜(SEM)、电子能谱分析(EDS)、X射线衍射、硬度和摩擦磨损测试研究这些涂层的显微组织和力学性能。SEM结果显示,含纳米添加剂涂层的孔洞比不含添加剂涂层的孔洞少。X射线衍射结果表明,在每种溶液中含添加剂的涂层比不含添加剂的涂层含有更多的氧化物成分,这与EDS的分析结果是一致的。力学性能测试结果表明,含纳米添加剂Al2O3的涂层较其他各种情况下在硅酸盐、硼酸盐和铝酸盐中制备出的涂层具有更高的硬度;纳米添加剂在这3种溶液中都能够提高微弧氧化涂层的耐磨性能。此外,无论是否含有纳米添加剂,硼酸盐微弧氧化涂层相对于硅酸盐和铝酸盐涂层都表现出较差的耐磨性能。
[Abstract]:With silicate, borate and aluminate as main solutions, 6063 aluminum alloy micro-arc oxidation ceramic coatings were prepared by adding nano-additives Al2O3 and TiO2 into the three solutions and without adding nano-additives. The microstructure and mechanical properties of the coatings were investigated by scanning electron microscopy (SEM), (SEM), electron spectroscopy (SEM), (EDS) X-ray diffraction (XRD), hardness and friction and wear tests. The results of X-ray diffraction show that the coatings containing additives contain more oxides than those without additives. This is consistent with the results of EDS analysis. The results of mechanical properties test show that the coatings containing nano-additive Al2O3 have higher hardness than those prepared in silicate, borate and aluminate under various conditions. Nano-additives can improve the wear resistance of micro-arc oxidation coatings in these three solutions. In addition, borate micro-arc oxidation coatings show poor wear resistance compared with silicate and aluminate coatings, whether or not they contain nano-additives.
【作者单位】：常州大学材料科学与工程学院;常州大学江苏省材料表面科学与技术重点实验室;
【基金】：Project(51371039)supported by the National Natural Science Foundation of China
【分类号】：TG174.4

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