十六烷基三甲基溴化铵在盐酸介质中对锌的缓蚀作用

摘要

采用失重法研究了3％盐酸介质中十六烷基三甲基溴化铵对金属锌的缓蚀作用。结果表明，该缓蚀剂对锌的腐蚀有良好的抑制作用，且随缓蚀剂质量浓度的增大，缓蚀作用加强。当其质量浓度达到一定值时，缓蚀作用基本保持不变。该物质在锌表面产生单分子层吸附，并且满足Langmuir吸附规律：吸附过程为放热过程；随着温度的升高，吸附能力减弱，缓蚀效率下降。%Corrosion inhibition of cetyl trimethyl ammonium bromide for zinc in 3 % hydrochloric acid solution is discussed by the weight loss method. The results show that the inhibitor has excellent cor- rosion inhibition for zinc, and the corrosion inhibition strengthened with the increasing mass concen- tration of the inhibitor. When its mass concentration reaches a certain mass concentration, the corro- sion inhibition is not changed. The substance generate monomolecular film adsorption on the surface of zinc, follow Langmuir adsorption rule : the adsorption progress is exothermal reaction, adsorption ability and corrosion inhibiting efficiency decrease with temperature rising.