摘要
The effect of Morinda tinctoria(MT) leaves extract on the corrosion inhibition of Al in acid medium was studied. The inhibition studies were carried out on Al in 0.5 mol/L HCl with the extract of leaves of MT using mass loss and electrochemical techniques. Parameters, such as concentration of the inhibitor, concentration of the acid, temperature and concentration of halide ions, were varied and optimized. Increase of the temperature and concentration of acid can decrease the performance of the inhibitor. Thermodynamic parameters show that the physisorption of the inhibitor molecules on Al surface obeys Langmuir isotherm.
研究在盐酸介质中巴戟天树叶水性提取物对铝表面腐蚀抑制作用的影响。采用质量损失法和电化学方法研究铝在含巴戟天植物树叶提取物的0.5 mol/L HCl溶液中的缓蚀作用。对缓蚀剂浓度、酸浓度、温度和卤化物离子浓度等参数进行优化。结果表明:提高温度和酸的浓度会降低缓蚀剂的性能。热力学分析表明:铝表面的缓蚀剂分子的吸附服从Langmuir吸附等温线。
