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研究了喹啉季铵盐对超级13Cr不锈钢在1 mol/L盐酸溶液中电化学行为的影响,并分析了温度、卤族阴离子类型和浓度对于喹啉季铵盐缓蚀效率的影响及机理。研究表明,喹啉季铵盐属于抑制阳极反应为主的混合型缓蚀剂,温度的升高会促进喹啉季铵盐的脱附过程,使其保护作用降低。卤族阴离子协同作用效果的顺序为:I->Br->Cl-。随着I-浓度的升高,其协同作用效果提高。加入0.005 mol/L以上浓度的KI,喹啉季铵盐的缓蚀率可达99%以上。
The effects of quaternary ammonium salts on the electrochemical behavior of super-13Cr stainless steel in 1 mol / L hydrochloric acid solution were investigated. The effects of temperature, type and concentration of halogen anions on corrosion inhibition efficiency of quinoline quaternary ammonium salts were also investigated. Studies have shown that quinoline quaternary ammonium salt is a mixed inhibitor that inhibits the anode reaction. The higher the temperature, the more the quinoline quaternary ammonium salt desorbs and the lower the protective effect. Halogen anion synergistic effect of the order: I-> Br-> Cl-. As I-concentration increases, its synergistic effect increases. Adding more than 0.005 mol / L KI, the quaternary ammonium quinoa corrosion inhibition rate of up to 99%.