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2 316L钢在空白和含有NOPE的0.5 mol/L HCl溶液中热力学活化参数

Table 2 Thermodynamic activation parameters for 316L steel 0.5 mol/L HCl solutions without and with NOPE

ContentCinh / mg·h-1 Amg·h-1·cm-2 EakJ·mol-1 ΔHa0kJ·mol-1 ΔSa0J·mol-1·K-1 0 7.56×106 58.30 55.66 -139.35 30 3.89×108 70.18 67.54 -89.34 50 1.34×109 73.79 71.15 -79.07 100 1.98×1010 81.52 78.88 -56.68 200 2.81×1010 82.75 80.11 -53.78 300 5.47×1011 91.40 88.76 -29.07 500 3.32×1012 96.54 93.90 -14.08