植酸预处理活化热镀锌钢板，提高硅烷膜的耐腐蚀性

IF 2 3区材料科学 Q2 ENGINEERING, MECHANICAL

Surface Topography: Metrology and Properties Pub Date : 2023-09-01 DOI:10.1088/2051-672x/acfb9c

Yongpeng Le, Jingwen Zhang, Gang Kong, Shuao Li, Chunshan Che

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引用次数: 0

摘要

摘要采用不同浓度的植酸(c6 h8 O 24 p6,PA)溶液对热镀锌钢板进行预处理，得到更多的羟基，羟基作为锌层表面的活化位点。然后制备了3-缩水氧基甲基二氧基硅烷(GPTMS)/四乙基硅酸乙酯(TEOS)杂化硅烷膜。利用傅里叶变换红外光谱(FTIR)和扫描电镜(SEM-EDS)对膜的结构和形貌进行了测试。结果表明，植酸浓度为5 ml l−1的处理改善了硅烷膜的密度和均匀性，同时增加了硅烷膜的厚度。电化学阻抗谱(EIS)结果表明，PA预处理使硅烷膜的腐蚀阻抗得到了很大的改善。经120 h盐雾试验，锈蚀较少。

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Phytic acid pretreatment activate hot-dip galvanized steel to enhance the corrosion resistance of silane film

Abstract In this work, hot-dip galvanized steel were pretreated with different concentrations of phytic acid(C 6 H 8 O 24 P 6 ,PA) solution to obtain more hydroxyl groups, which act as an activated site on the surface of zinc layer. Then, 3-Glycidoxypropyl methyldiethoxysilane (GPTMS)/tetraethylorthosilicate (TEOS) hybrid silane film was prepared. The structure and morphology of film were tested by Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM-EDS). The results indicated that phytic acid treatment at a concentration of 5 ml l −1 improved the denseness and uniformity of the silane film while increasing its thickness. The results of electrochemical impedance spectroscopy (EIS) showed that the corrosion impedance of silane films under PA pretreatment was greatly improved. Furthermore, there were less rusts after 120 h salt spray test.

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来源期刊

Surface Topography: Metrology and Properties Materials Science-Materials Chemistry

CiteScore

4.10

自引率

22.20%

发文量

183

期刊介绍： An international forum for academics, industrialists and engineers to publish the latest research in surface topography measurement and characterisation, instrumentation development and the properties of surfaces.