摘要
为研究CO_(2)/O_(2)共存环境中流速对L485钢腐蚀行为的影响,在高温高压动态反应釜中进行模拟腐蚀试验,测试L485钢的均匀腐蚀速率,通过扫描电镜(SEM)、能谱仪(EDS)、X射线衍射仪(XRD)等方法观测腐蚀产物的微观形貌和成分。结果表明:CO_(2)/O_(2)共存体系中,随着流速的增大L485钢的均匀腐蚀速率逐渐增大,且表面呈现由局部腐蚀向均匀腐蚀转变的特点;CO_(2)/O_(2)共存体系中L485钢的腐蚀产物为Fe2O3、FeOOH、Fe(OH)3、Fe3O4、FeCO3。
In order to study the effect of flow rate on corrosion behavior of L485 steel in CO_(2)/O_(2) coexistence environment, corrosion simulation tests were carried out in a high-temperature and high-pressure dynamic reactor. The uniform corrosion rate of L485 steel was tested. Sanning electron microscopy(SEM), energy dispersive spectroscopy(EDS) and X-ray diffraction(XRD) were used to examine the morphology and composition of corrosion products. The results show that in the CO_(2)/O_(2) coexistence system, the uniform corrosion rate of L485 steel gradually increased as the flow rate increased. The surface of L485 steel presented the characteristics of transition from localized corrosion to uniform corrosion. The corrosion products of L485 steel in CO_(2)/O_(2)coexistence system were mainly Fe_(2)O_(3), FeOOH, Fe(OH)_(3), Fe_(3)O_(4), FeCO.
作者
庞洪晨
孙奇北
王培健
孙大伟
廖柯熹
赵帅
PANG Hongchen;SUN Qibei;WANG Peijiang;SUN Dawei;LIAO Kexi;ZHAO Shuai(Shandong Operation and Maintenance Center of National Pipe Network Group,Ji'nan 25oo00,China;School of Petroleum and Natural Gas Engineering,Southwest Petroleum University,Chengdu 610500,China)
出处
《腐蚀与防护》
CAS
北大核心
2022年第11期7-12,共6页
Corrosion & Protection
基金
国家自然科学基金(51674212)。
