将环境友好缓蚀剂植酸钠组装到铁基电极表面,运用电化学极化曲线方法,考察了不同组装液浓度、组装时间及次数形成的植酸钠层对铁基电极表面缓蚀性能的影响.实验结果表明:铁电极在10-2 mol·L-1和10-3 mol·L-1植酸钠溶液中分别组装数分钟,再经10-6mol·L-1植酸钠溶液组装7h,获得的植酸钠层对铁的缓蚀性能最佳.利用交流阻抗技术探究了最佳组装条件下形成的植酸钠层对铁电极表面的缓蚀机理,等效电路为R(QR)(QR).同时借鉴拉曼光谱进一步解释其缓蚀机理和组装方式.%Na-salt of phytic acid as an environmentally friendly corrosion inhibitor was self-assembled onto the surface of iron-based electrode. Effects of different assembly concentrations,including assembly time and assembly steps of Na-salt of phytic acid at iron-based electrode surface on anti-corrosion performance were evaluated by electrochemical polarization method. Experimental results revealed that the iron-based electrode with Na-salt of phytic acid monolayers formed by respective assemblies in 10- mol · L-1 and 10-3mol · L-1 Na-salt of phytic acid solutions for several minutes and then in l0-6mol · L-1 Na-salt of phytic acid solution for 7 hours exhibited the best anti-corrosive performance. AC impedance results demonstrated that the mechanism of Na-salt of phytic acid monolayers on iron-based electrode with the best anti-corrosive performance was consistent with the equivalent mode of R (QR) (QR) .which was further confirmed by Raman mapping.
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