硅烷-钼复合无铬钝化膜的耐蚀性及标准曲线构建

发布时间：2018-11-08 16:44

【摘要】：为更好地指导新型硅烷-钼复合无铬钝化膜的工业化生产,研究钝化膜的耐蚀性能,构建皮膜量标准曲线。分别使用X射线衍射仪(XRD)、X射线光电子能谱仪(XPS)分析钝化膜的物相组成和表面元素价态。利用中性盐雾试验和电化学测试,探讨钝化膜的耐蚀性能。采用X射线荧光光谱法(XRF),绘制和构建皮膜量标准曲线。结果表明:硅烷-钼复合无铬钝化膜层中Si、Mo元素能分别与Zn形成化学键,膜层结合性较好。膜层耐蚀性在一定范围内随着膜层皮膜量升高而升高,当皮膜量高于800 mg/m2时,耐蚀性趋于稳定,其耐蚀性与稳定性接近Cr6+。此外,皮膜量与XRF射线强度呈线性关系,斜率为3.413。
[Abstract]:In order to better guide the industrial production of new silane molybdenum composite chromium-free passivating film, the corrosion resistance of the passivating film was studied and the standard curve of coating quantity was constructed. X-ray diffractometer (XRD), X) photoelectron spectroscopy (XPS) was used to analyze the phase composition and the valence states of the surface elements of the passivated film. The corrosion resistance of passivation film was studied by neutral salt spray test and electrochemical test. X-ray fluorescence spectrometry (XRF),) was used to draw and construct the standard curve of skin film volume. The results show that the chemical bond between Si,Mo element and Zn can be formed in the silane molybdenum composite chromium-free passivation film, and the bonding property of the film is good. The corrosion resistance of the film increases with the increase of the amount of the film in a certain range. When the amount of the film is higher than 800 mg/m2, the corrosion resistance of the film tends to be stable, and the corrosion resistance and stability of the film are close to that of Cr6. In addition, there was a linear relationship between the amount of skin membrane and the intensity of XRF rays, with a slope of 3.413.
【作者单位】：昆明理工大学材料科学与工程学院;昆明理工大学固体废弃物资源化国家工程研究中心;
【基金】：国家高技术研究发展计划(863计划)(2009AA03Z529)~~
【分类号】：TG174.4

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