采用稳态极化曲线技术和交流阻抗测试技术研究了环己基二炔氧甲基胺乙酸盐在硫酸介质中对铁的缓蚀机理及与Cl－的协同作用。研究结果表明，其缓蚀机理为混合抑制负催化效应，缓蚀剂分子可能参与了反应。缓蚀剂分子与Cl－在对铁的缓蚀方面有明显的协同效应，缓蚀作用和协同效应的大小与它们的浓度有关。缓蚀剂存在着浓度极值现象。 The steady-state polarization curves and AC impedance techniques were used to study the corrosion inhibition mechanism of cyclohexyldialtyloxymethyl amine acetate on iron in sulfuric acid medium and its synergism with Cl-. The results show that the corrosion inhibition mechanism is mixed inhibition of the negative catalytic effect, the inhibitor molecules may be involved in the reaction. The corrosion inhibitor molecule and Cl- have obvious synergistic effect on corrosion inhibition of iron. The corrosion inhibition and the synergistic effect are related to their concentrations. Inhibitors exist the phenomenon of extreme concentration.