含硫介质中油气管道用X80钢的腐蚀行为及机理
Corrosion Behavior and Mechanism of X80 Steel for Oil and Gas Pipeline in Sulfur-Containing Medium
柏蓉 1房梦飞 1尹康 1刘玉建 1李文莉 1王章忠1
作者信息
- 1. 江苏省先进结构材料与应用技术重点实验室,南京 211167;南京工程学院材料科学与工程学院,南京 211167
- 折叠
摘要
在动态非含硫腐蚀环境以及动态含硫腐蚀环境中对油气管道用X80钢进行腐蚀试验,对腐蚀产物的宏观形貌及微观形貌、腐蚀产物成分进行了分析,并采用电化学测试方法对X8 0钢的腐蚀过程及机理进行了研究.结果表明:在非含硫环境中X80钢的腐蚀产物与基体结合更加紧密,能够对基体起到一定保护作用;而在含硫环境中,X80钢表面生成的FeS沉淀结构疏松,为离子提供了快速通道,加速了钢的腐蚀.
Abstract
The corrosion test of X80 steel for oil and gas pipeline was carried out in dynamic non-sulfur-containing corrosion environment and dynamic sulfur-containing corrosion environment.The macroscopic and microscopic morphology of the corrosion products and the composition of the corrosion products were analyzed.The results show that the corrosion products of X80 steel in non-sulfur-containing environment were closely bound to the substrate,and played a certain role in protecting the substrate.However,in the sulfur-containing environment,the FeS precipitation structure formed on the surface of X80 steel was loose,which provided a fast channel for ions and accelerated the corrosion of the steel.
关键词
油气管道/含硫腐蚀环境/动态腐蚀行为/腐蚀机理Key words
oil and gas pipeline/corrosive environment with sulfur/dynamic corrosion behavior/corrosion mechanism引用本文复制引用
基金项目
江苏省基础研究计划(自然基金)青年基金(BK20191021)
出版年
2024
NETL
NSTL
万方数据