Chen Xuanyu, Wang Hao, Liu Cancan, Wang Wenqiang, Chen Bo
College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211800, China.
Materials (Basel). 2024 May 29;17(11):2621. doi: 10.3390/ma17112621.
In this study, we successfully employed the plasma electrolytic oxidation (PEO) technique to create a uniform white ceramic layer on the surface of the 6061 aluminum alloy using KZrF and NaWO as colorants. A scanning electron microscope (SEM) equipped with an energy-dispersive X-ray spectrometer (EDS) and X-ray diffraction (XRD) were used to characterize the coatings, and we used an electrochemical workstation to test their corrosion protection properties. The corrosion resistance of the coatings was analyzed using potentiodynamic polarization curves. The results showed that KZrF addition whitened the coating with ZrO as the main phase composition, inhibiting Al substrate depletion and enhancing coating corrosion resistance. A small amount of NaWO decreased the coating's L* value, successfully constructing ceramic coatings with L* (coating brightness) values ranging from 70 to 86, offering broad application prospects for decorative coatings.
在本研究中，我们成功采用等离子体电解氧化（PEO）技术，以KZrF和NaWO作为着色剂，在6061铝合金表面制备出均匀的白色陶瓷层。使用配备能量色散X射线光谱仪（EDS）的扫描电子显微镜（SEM）和X射线衍射仪（XRD）对涂层进行表征，并用电化学工作站测试其耐腐蚀性能。通过动电位极化曲线分析涂层的耐腐蚀性。结果表明，添加KZrF使涂层变白，涂层以ZrO为主相组成，抑制了铝基体的损耗，提高了涂层的耐腐蚀性。少量的NaWO降低了涂层的L值，成功制备出L（涂层亮度）值在70至86之间的陶瓷涂层，为装饰涂层提供了广阔的应用前景。
