植酸自组装单分子膜对白铜B30缓蚀作用的研究

Study of self-assembled monolayer of plant acid for B30 corrosion and its inhibiting mechanism

用一种环境友好型金属处理剂植酸在白铜B30表面制备了自组装单分子膜(SAMs),研究了该膜在3%NaCl中对白铜B30的缓蚀作用。通过交流阻抗法和极化曲线法的研究表明,在酸性和碱性环境中,植酸SAMs对白铜B30均有良好的缓蚀效果,其对白铜B30的缓蚀效果在酸性环境中要优于碱性环境;且组装时间6h效果最好,缓蚀率为84．87%,同时分析表明其缓蚀机理为化学吸附过程。

The self-assembled monolayer of plant acid on B30 surface in 3% NaCl solution has been investigated by AC impedance method and polarization curve. The results indicate that the SAMs had inhibition effect for B30 corrosion, in the condition of both acidity and alkalescence. But it＇s better inhibition effect in acidity. Furthermore, the inhibition efficiency was 84.87% if B30 was immersed in plant acid solution for 6h. It also shows that the inhibiting mechanism of plant acid is a chemical adsorption process.