焊管2016，Vol.39Issue(6)：5-9,5.DOI:10.19291/j.cnki.1001-3938.2016.06.002
一种新型复配酸化缓蚀剂对N80钢缓蚀性能的影响
Influence of the Corrosion Inhibition Performance of a New Composite Acidizing Corrosion Inhibitor to N80 Steel
李小龙 1张军平 2毕宗岳 3张娟涛1
作者信息
- 1. 国家石油天然气管材工程技术研究中心，陕西 宝鸡 721008
- 2. 宝鸡石油钢管有限责任公司 钢管研究院，陕西 宝鸡 721008
- 3. 西北工业大学 理学院应用化学系，西安 710129
- 折叠
摘要
Abstract
Quinoline quaternary ammonium salts were synthesized at different temperatures using quinoline and benzyl chloride. Effect of Ca2+and Ca2++Cu+on the corrosion inhibition action of quinoline quaternary ammonium salt for N80 steel in 15%HCl solution were investigated using weight loss method and polarization curve method. The corrosion behavior of N80 steel in 15%HCl solution was analyzed by using scanning electron microscopy method. Results showed that the corrosion efficiency of synthesized quinoline quaternary ammonium salt increased with the increase of the reaction temperature. Addition of Ca2+could enhance the corrosion efficiency of quinoline quaternary ammonium salt in 15%HCl solution, but can’t meet the SY/T 5405—1996 Class A of the industry standard requirements(corrosion rate<3 g/(m2·h)). When adding different proportions of Ca2++Cu+, the corrosion rate of N80 steels were less than the Class A of industry standard requirements. Electrochemical results showed that the combined inhibitor was mainly a mixed corrosion inhibitor. SEM results showed that the combined inhibitor has a good corrosion efficiency to N80 steel at 90℃, but when the temperature raised to 140℃, the corrosion efficiency was bad and had corrosive pitting appeared.关键词
N80钢/缓蚀剂/喹啉季铵盐/氯化钙/电化学测试Key words
N80 steel/corrosion inhibitor/quinoline quaternary ammonium salt/calcium chloride/electrochemical test分类
矿业与冶金引用本文复制引用
李小龙,张军平,毕宗岳,张娟涛..一种新型复配酸化缓蚀剂对N80钢缓蚀性能的影响[J].焊管,2016,39(6):5-9,5.
