盐酸溶液中二乙烯三胺对黄铜的缓蚀作用及吸附热力学研究

Studies on corrosion inhibition and absorb thermodynamics of diethylenetriamine on brass in hydrochloric acid solution

采用失重法研究了不同温度下不同浓度的二乙烯三胺在10%的盐酸介质中对黄铜的缓蚀作用。结果表明,二乙烯三胺在10%的盐酸介质中对黄铜的脱锌腐蚀有良好的抑制作用,二乙烯三胺在黄铜表面的吸附规律基本服从Langmuir等温式,由此获得相关热力学参数。

AThe corrosion inhibition of diethylenetriamine on brass in 10% hydrochloric acid was studied with different temperatures and different concentration of diethylenetriamine by weight - loss meth- od. It is shown by the result that diethylenetriamine can efficiently inhibit the dezincification corrosion of brass in 10% hydrochloric acid solution, the adsorption rule of diethylenetriamine on the surface of brass obeys Langrnuir isotherm. The related thermodynamics parameters were obtained.