摘要
采用改进的Devnathan-Stachurski双电解池技术研究了管线钢API X56在海泥中的氢渗透行为。研究表明,海泥中SRB的一个生长周期可分为4个生长阶段:快速生长阶段,平稳生长阶段,衰亡阶段和残余阶段。在一个生长周期内自腐蚀电位下氢渗透电流密度曲线和SRB在海泥中的生长曲线相对应,活性SRB能够促进X56钢在海泥中的氢渗透;在阴极极化条件下,海泥中的SRB对氢渗透的促进作用显著。
Hydrogen permeation behavior of corroding pipeline steel of API X56 in sea-mud was studied by using Devnathan-Stachurski Double cell technique. The study showed that the culturing cycle of sulfate reducing bacteria （SRB） in sea-mud can be divided into 4 periods： rapid growing period, steady growing period, declining period and surviving period. The hydrogen permeation current time curve under free corrosion potential within one SRB culturing cycle corresponds to SRB growing curve; Active SRB can promote hydrogen permeation and cathodic polarization accelerates the effect.
出处
《中国腐蚀与防护学报》
CAS
CSCD
北大核心
2008年第6期355-358,共4页
Journal of Chinese Society For Corrosion and Protection
基金
国家自然科学基金项目(40276032,40576049)
中国科学院知识创新工程项目(KZCX-YW-210)资助
关键词
氢渗透
硫酸盐还原菌
海泥
hydrogen permeation, sulfate-reducing bacteria, sea mud
