在镀锌钢板基体上制备了硅烷膜和Ceo2纳米颗粒改性γ-(甲基丙烯酰氧)丙基三甲氧基硅烷膜.采用电化学阻抗谱(EIS)技术研究了水解液中甲醇和CeO2纳米颗粒加入量对钝化膜电化学性能的影响;采用扫描电子显微镜(SEM)观察n种硅烷膜的微观形貌和结构.结果表明:甲醇含量对硅烷水解有重要影响,当甲醇含量为10％(质量分数)时,制得硅烷膜的阻抗最大,为1×103.7 Ω·cm2,单纯纳米颗粒CeO2的添加对钝化膜的耐蚀性影响不大.
Silane film and γ-methacryl oxypropyltrimethoxy silane film modified by CeO2 nanoparticles were prepared on the surface of galvanized steel.EIS was used to investigate the effect of the content of methanol and CeO2 nanoparticle in hydrolysate on the electrochemical performance of silence films.SEM was used to observe the micromorphology and structure of several silane films.The results showed that the film the concentration of methanols played an important role in silane hydrolyzation,and the R~ of silane film reached 1 × 103.7 Ω · cm2 when 10％ methanols was added in the hydrolysate.The addition of CeO2 nanoparticles had no remarkable effect on the corrosion resistance of silane films.
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