Q345R在不同环境下的腐蚀行为研究
Research on Corrosion Behavior of Q345R in Different Environments
张露1
作者信息
- 1. 中铁第一勘察设计院集团有限公司,陕西 西安 710043
- 折叠
摘要
在高温高压反应釜和电化学工作站模拟研究了Q345R钢在不同温度、不同CO2和H2S分压中的腐蚀行为.结果表明:温度升高,化学反应速率加快,平均腐蚀速率增大;在20 ℃和50℃时,H2S和CO2均有较高的溶解度,溶液的pH值较低,随着CO2/H2S浓度的增加,Q345R钢的均匀腐蚀速率明显增加.微观形貌和XRD分析表明,Q345R钢的腐蚀以H2S占主导作用.
Abstract
The corrosion behavior of Q345R steel at different temperatures,CO2 and H2S partial pressure ratios was simulated by hightempera-ture and highpressure reactor and electrochemical workstation.The results show that the average corrosion rate increases as the temperature in-creases.At the temperature of 20℃ and 50℃,both CO2 and H2S have greater solubility,and the solution has a lower pH value,therefore,with the increase of CO2/H2S concentration,the uniform corrosion rate of Q345R steel increases significantly.The results of microscopic morphology and XRD analysis showed that H2S corrosion was dominant.
关键词
Q345R/温度/CO2/H2SKey words
Q345 R/Temperature/CO2/H2 S引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据