高Cl^-条件下H2S分压对P110钢腐蚀速率的影响  

Effect of H_2S Partial Preesure on Corrosion Rate of P110 Steel under High Cl^- Oil Condition

作　　者：朱世东[1,2] 白真权 林冠发 尹成先 刘会[1] 

机构地区：[1]西安石油大学材料科学与工程学院,西安710065 [2]中国石油集团石油管力学和环境行为重点实验室,西安710065

出　　处：《腐蚀与防护》2009年第5期293-296,共4页Corrosion & Protection

基　　金：中国石油天然气集团公司应用基础研究资助项目(06A40302)

摘　　要：利用高温高压釜设备模拟油气田环境并辅以失重法,研究了高Cl-条件下H2S分压对P110钢腐蚀速率的影响,结果表明:P110钢的腐蚀速率随着H2S分压的增大呈先增大后减小的趋势,且在0.06 MPa时取得最大值;采用扫描电子显微镜(SEM)、X射线衍射(XRD)和X射线能谱仪(EDS)技术对腐蚀产物膜进行分析知:H2S分压通过影响腐蚀产物膜厚度、微观吸附形貌和表面膜成分等,进而影响了P110钢的腐蚀速率。Effect of H2 S partial pressure on corrosion rate of P110 steel under high Cl^- condition was investigated in the autoclave containing stimulating oil and gas field environment, and the corrosion rate was measured by the weight loss method. And the corrosion scales were analyzed using SEM, XRD and EDS, The results showed that the corrosion rate of P110 steel increased first and decreased subsequently with the increase of H2S partial pressure, and the maximal corrosion rate was presented at 0. 06 MPa. H2S partial pressure affected of and thus influenced the corrosion rate the thickness, surface morphology, composition of the corrosion scale of P110 steel and thus influenced the corrosion rate.

关 键 词：P110钢 H2S分压 Cl^- 腐蚀速率 

分 类 号：TG172.8[金属学及工艺—金属表面处理]