咪唑啉酰胺在HCl/NH4Cl-H2O和H2S/NH4HS-H2O体系中对碳钢的缓蚀性能
Corrosion and Protection（2016）
Abstract
采用失重法、电化学测试法,并结合扫描电镜和原子力显微镜观察,研究了在50℃条件下,N-(2-辛基-2咪唑啉)三亚乙基四酰胺(咪唑啉酰胺)分别在HCl/NH4Cl-H2O和H2S/NH4HS-H2O体系中对碳钢的缓蚀性能.结果表明:N-(2-辛基-2咪唑啉)三亚乙基四酰胺加量为15 mg/L时,缓蚀率接近90％,缓蚀效果明显;该缓蚀剂为抑制阳极型缓蚀剂,溶液中加入缓蚀剂后,碳钢试样形成较长的钝化区间,交流阻抗半径大,腐蚀电流明显减小.形貌观察显示N-(2-辛基-2咪唑啉)三亚乙基四酰胺能够在碳钢表面形成致密的保护膜.
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