摘要
应用高温高压反应釜研究新开发的一种改性咪唑啉基缓蚀剂对预腐蚀后的X65钢在模拟油气田腐蚀环境中的缓蚀效果。利用SEM观察缓蚀剂对腐蚀产物膜的表面与截面微观形貌的影响。并用纳米压痕法、粘结剪切法测试腐蚀产物膜的力学性能。实验结果显示,缓蚀剂对预腐蚀后的X65钢具有良好的缓蚀效果,温度低于75℃时其缓蚀效率可达90%以上。实验条件下,缓蚀剂对腐蚀产物膜的结构和力学性能并没有明显改善作用,100℃时反而使膜的力学性能下降,表明缓蚀剂的缓蚀效果主要依靠表面吸附保护作用。
The inhibition efficiency of modified imidazoline based inhibitor on the surface of corroded X65 steel in produced water was studied by using autoclave. The surface and cross-section morphology and microstructure of the CO2 corrosion scales with and without inhibitor were investigated by means of SEM. Mechanical properties of the scales were measured by nano-indentation and shear testing. The results indicate that the inhibitor inhibits the corrosion of X65 steel effectively with an inhibition efficiency above 90% under 75℃. The mechanical properties of the scales, including Young＇s modulus, microhardness, shear strength between the scales and substrate, were not improved by adding inhibitor. Inhibitor inhibits the corrosion reactions of X65 steel by the geometric blocking effect of inhibitive substance adsorbed on the metal surface.
出处
《材料工程》
EI
CAS
CSCD
北大核心
2007年第1期29-33,36,共6页
Journal of Materials Engineering
基金
国家自然科学基金重点资助项目(50231020)
关键词
CO2腐蚀
缓蚀剂
腐蚀产物膜
力学性能
结构形貌
CO2 corrosion
inhibitor
corrosion product scale
mechanical property
morphology and structure
作者简介
柴成文（1970-）男，博士研究生，主要从事金属材料腐蚀与防护的研究，联系地址：北京科技大学腐蚀与防护中心（100083）
