金属铝用复配缓蚀剂协同缓蚀作用研究

柳泽邦, 冉博元, 裴恒, 罗凯林, 赵智斌, 韩鹏, 强玉杰

Synergistic Corrosion Inhibition Effect of a Compound Inhibitor for Aluminum

LIU Zebang, RAN Boyuan, PEI Heng, LUO Kailin, ZHAO Zhibin, HAN Peng, QIANG Yujie

表2 在25℃的3.5%NaCl溶液中添加不同浓度缓蚀剂后测得的Nyquist曲线拟合参数

Table 2 Fitting parameters of Nyquist plots of Al electro-de during immersion in 3.5%NaCl solutions containing different concentrations of 4MP, SDS and 4MP + SDS at 25oC

Inhibitor Concentration g·L-1 Cdl μF·cm-2 Rct Ω·cm2 η / % Inhibitor free - 57.71 930 - 4MP 0.025 53.62 1046 11.09 0.375 43.87 1213 23.33 0.500 40.86 2553 63.57 0.625 37.77 4692 80.18 0.750 31.74 7297 87.26 SDS 0.025 39.37 2058 54.81 0.375 35.78 5238 82.25 0.500 37.78 5420 82.84 0.625 33.16 9652 90.36 0.750 31.92 10990 91.53 4MP + 0.025 48.25 4618 79.86 SDS 0.375 26.09 9497 90.21 0.500 2.766 23700 96.08 0.625 2.706 42530 97.81 0.750 3.703 28620 96.75