表面技术2016，Vol.45Issue(5)：72-78,7.DOI:10.16490/j.cnki.issn.1001-3660.2016.05.011
高CO2分压环境超级13Cr的腐蚀行为
Corrosion Behavior of Super 13Cr Stainless Steel in Environment with High CO2 Level
摘要
Abstract
ABSTRACT:Objective To analyze the corrosion behavior of super 13Cr and evaluate its anti-corrosion ability in high CO2 level condition. The result can support material selection work for similar gas fields.Methods High temperature/pressure corro-sion coupon test and electrochemical test were conducted in simulated Dong Fang gas field high CO2level environment (141℃, CO2 27.9 MPa).Results The corrosion coupon test result indicated that the corrosion type of super 13Cr was general corrosion with a corrosion rate of 3×10-3mm/a. The electrochemical test showed that the corrosion potential and pitting potential of 13Cr (-0.785 V,-0.301 V) had an obvious negative shift compared to super 13Cr (-0.580 V,-0.139 V). The corrosion current density and passivation current density of 13Cr were obviously higher than super 13Cr. Conclusion Super 13Cr could be applied to high CO2 level environment as tubing or casing. Super 13Cr was better than 13Cr in anti-corrosion and anti-pitting properties.关键词
高CO2分压/超级13Cr/油套管/东方气田/腐蚀行为Key words
high CO2 partial pressure/super 13Cr/tubing and casing/Dong Fang gas field/corrosion behavior分类
矿业与冶金引用本文复制引用
冯桓榰,邢希金,谢仁军,何松..高CO2分压环境超级13Cr的腐蚀行为[J].表面技术,2016,45(5):72-78,7.基金项目
修订日期2016-04-29 （）
