通过失重法和极化曲线法研究了阳离子季铵盐型Gemini表面活性剂Π-14-3及其添加卤离子的复配体系对A3钢在硫酸溶液中的缓蚀性能及其机理.结果表明，表面活性剂分子Π-14-3对A3钢在0.5 mol/L的硫酸中具有很好的缓蚀性能;在缓蚀剂浓度很低时，通过加入一定量的卤离子，可以得到较高的缓蚀性能，从而降低其应用成本;在硫酸介质中，Gemini表面活性剂在金属表面的吸附符合Langmuir吸附机理.
Corrosion inhibition for steel of quaternary ammonium salt type gemini surfactant Π-14-3 and the synergistic effect of halide ions on steel in sulfuric acid medium were studied using weight loss method and polarization curves.The results revealed that the complex gemini surfactant Π-14-3 was excellent inhibitor for steel protection in sulphuric acid solution.By introducing halide ions into the corrosion inhibition system,a high inhibition efficiency for steel corrosion could be obtained at a low surfactant concentration,thereby reducing the cost of its application.The adsorption mechanism of this cationic gemini surfactant on steel surface in sulfuric acid medium was found to be fitted with Langmuir adsorption model.
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