材料工程2016，Vol.44Issue(10)：100-108,9.DOI:10.11868/j.issn.1001-4381.2016.10.015
X65管线钢在沉积物下腐蚀与缓蚀剂作用效果
Corrosion of X65 Pipeline Steel Under Deposit and Effect of Corrosion Inhibitor
摘要
Abstract
Effect of the deposit on the electrochemical parameters of X 65 pipeline steel in oxygen con‐tained sodium chloride solution was studied by EIS and PDS methods .The galvanic corrosion behavior under deposit and effect of different concentration of corrosion inhibitor PBTCA were studied by elec‐trical resistance (ER) method combined with ZRA .The results show that the corrosion potential of X65 steel shifts negatively as SiO2 covering its surface and the corrosion rate becomes lower .When the galvanic couple specimen with deposit is electrically connected with the specimen without deposit , anodic polarization occurs on X65 steel under deposit and the galvanic current density decreases from 120μA/cm2 to 50μA/cm2 and keeps stable .As 5 × 10-5 ,8 × 10-5 and 3 × 10-4 PBTCA were introduced into the solution ,the galvanic current density reaches the highest 1300μA/cm2 and then decreases to 610μA/cm2 keeping stable around 610μA/cm2 , corrosion rate of X65 steel under deposit reaches 6.11mm/a .PBTCA accelerates the corrosion of X65 steel under deposit in oxygen contained solution . Through the investigation on the surface of the specimens ,serious local corrosion occurs on the X65 steel surface under deposit .关键词
X65管线钢/沉积物下腐蚀/PBTCA/电偶腐蚀Key words
X65 pipeline steel/under deposit corrosion/PBTCA/galvanic corrosion分类
矿业与冶金引用本文复制引用
徐云泽,黄一,盈亮,王晓娜,杨飞..X65管线钢在沉积物下腐蚀与缓蚀剂作用效果[J].材料工程,2016,44(10):100-108,9.基金项目
“十二五”国家重大科技专项（2011ZX05056）；国家自然科学基金（11201023）；中国博士后科学基金 （）
