Abstract: Parent corrosion inhibitor was synthesized with quinoline and benzyl chloride，and then mixed with synergist and dispersant to prepare organic nitrogen quaternary ammonium corrosion inhibitor．Corrosion control ability of the prepared inhibitor was evaluated using static weight－loss method and electrochemical polarization curve． The results show that the prepared corrosion inhibitor can efficiently protect N80 steel at 135 ℃ in mass fracion of 15% HCl；It is a type of mixed mode corrosion inhibitor mainly repressing negative pole process，and the adsorption of inhibitor molecules fits Bockris－Swinkels
adsorption isotherm on the steel surface．Scanning electron microscope was applied to investigate surface morphology of N80steel in HCl before and after corroded．The inhibition mechanism of corrosion inhibitor was analyzed．The results indicate that the corrosion inhibitor can successfully restrain acidic component erode N80 steel．

Key words: Acidizing corrosion inhibitor , Quaternary ammonium salt , Anticorrosion mechanism , Electrochemical test , Scanning electron microscope

摘要： 以喹啉和氯化苄为原料合成了一种母体缓蚀剂，与增效剂炔醇和分散剂复配，制得了一种有机含氮季铵盐型酸化缓蚀剂。采用静态挂片失重法和电化学方法考察了该缓蚀剂的缓蚀性能。结果表明，该缓蚀剂在质量分数为15%的盐酸溶液中，在温度为135℃时，对N80钢片具有良好的缓蚀性能。该缓蚀剂是一种以抑制阴极过程为主的混合型缓蚀剂，在铁表面的吸附符合Bockris- Swinkels吸附等温式。采用扫描电子显微镜分析了腐蚀前、后及加入缓蚀剂后N80钢的表面形态，探讨了缓蚀剂的缓蚀机理。结果证明，缓蚀剂有效地抑制了盐酸对N80钢的腐蚀。

关键词: 酸化缓蚀剂 , 季铵盐 ,  缓蚀机理 , 电化学测试 , 扫描电镜