在酸性介质中脐橙皮提取物对不锈钢的缓蚀作用

周坤, 柳鑫华, 刘帅

Corrosion Inhibition of Navel Orange Peel Extract to Stainless Steel in Acidic Medium

ZHOU Kun, LIU Xinhua, LIU Shuai

表5 316L钢在含不同浓度NOPE的0.5 mol/L HCl介质中的EIS拟合参数

Table 5 Fitting parameters of EIS of 316L steel in 0.5 mol/L HCl solutions with different concentrations of NOPE

Cinh / mg·L-1 Rs / Ω·cm2 Rc / Ω·cm2 Cd / μf·cm-2 CPE χ2 η / % Y0 / μΩ-1·s n ·cm-2 n 0 0.51 72.22 410.13 477.36 0.9201 0.003446 - 30 0.53 151.03 252.55 297.60 0.9224 0.004160 52.18 50 0.44 211.01 257.27 299.70 0.9128 0.003832 65.77 100 0.46 266.27 289.79 303.92 0.9189 0.004109 72.86 200 0.41 282.91 277.68 305.98 0.9066 0.004610 74.47 300 0.45 361.10 320.29 308.14 0.9122 0.003260 80.00 500 0.47 571.48 137.47 224.62 0.9260 0.001505 87.36