采用失重法和电化学方法,研究了半胱氨酸、蛋氨酸对盐酸介质中碳钢的缓蚀作用.失重实验结果表明:半胱氨酸、蛋氨酸的用量为800 mg/L时,对碳钢的缓蚀率仅分别为66.61％和62.44％.与蛋氨酸相比,半胱氨酸与环烷基咪唑啉季铵盐有较好的协同作用,组分质量比为1∶1,总用量为1 600 mg/L,缓蚀率达到91.050％.在三元配方中,半胱氨酸、环烷基咪唑啉季铵盐和六次甲基四胺(HMTA)具有明显的协同效应,组分质量比为2∶5∶5,总用量为120mg/L,缓蚀率达到95.98％.极化曲线和交流阻抗测试结果与失重法的实验结果一致,且一元、二元、三元缓蚀剂均为混合型缓蚀剂.
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