为了充分地了解双-[3-(三乙氧基)硅丙基]硫化物(BTESPT)水溶胶和膜层的形成过程及结构变化,采用傅立叶反射吸收红外光谱(FTIR-RA)和电化学阻抗谱(EIS)分析以及扫描电子显微镜(SEM)观察分析,对沉积在YL12铝合金表面的BTESPT水溶胶膜层进行了表征.结果表明,水解时间和固化工艺对膜层的组分和结构有显著影响,高温固化形成膜层的电化学阻抗比室温陈化形成膜层的阻抗更高,并且室温预陈化后的膜层在非腐蚀性水溶液中需进一步陈化才能提高膜层的致密性和均匀性.
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