【摘要】 采用浸涂技术,在6061铝合金表面制备了γ-氨丙基三甲氧基硅烷膜。采用电化学方法和SEM研究了其在3.5%NaCl溶液中的耐蚀性及形貌。结果表明,当硅烷浓度为3%(体积分数),溶液pH为12,室温下水解时间72h形成的硅烷溶液具有较好的稳定性;铝合金试样在硅烷溶液中浸涂3min,固化温度180℃,固化时间120min,其表面形成的硅烷膜的耐蚀性最佳,表现为腐蚀电流密度降低和腐蚀电位的升高。更多还原

【Abstract】 Theγ-aminopropyltriethoxysilane film was deposited on 6061aluminium alloy surface.The corrosion resistance of the silane film was investigated in 3.5% NaCl solution,using Tafel polarization curves.The results showed that silane solution was stable when the silane concentration was 3%,pH value was 12and time of hydrolysis was 72hat room temperature.When aluminum alloy specimen in silane solution was treated by dip-coating 3min, curing temperature 180℃and curing time 120min.the obtained silane films on 6061aluminium alloy surface had the best corrosion resistance,the corrosion current density reduced and corrosion potential rose.更多还原