流速对CO2/O2环境中L485钢腐蚀行为的影响
Effect of Flow Rate on Corrosion of L485 Steel in CO2/O2 Environment
摘 要
为研究CO2/O2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：CO2/O2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；CO2/O2共存体系中L485钢的腐蚀产物为Fe2O3、FeOOH、Fe （OH）3、Fe3O4、FeCO3。
CO2/O2共存体系
腐蚀产物
腐蚀行为
L485 steel
CO2/O2 coexistence system
corrosion product
corrosion behavior
Abstract
In order to study the effect of flow rate on corrosion behavior of L485 steel in CO2/O2 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 CO2/O2 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 CO2/O2 coexistence system were mainly Fe2O3, FeOOH, Fe(OH)3, Fe3O4, FeCO.
中图分类号 TG172 DOI 10.11973/fsyfh-202211002
所属栏目 试验研究
基金项目 国家自然科学基金（51674212）
收稿日期 2020/10/16
修改稿日期
网络出版日期
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引用该论文: PANG Hongchen,SUN Qibei,WANG Peijiang,SUN Dawei,LIAO Kexi,ZHAO Shuai. Effect of Flow Rate on Corrosion of L485 Steel in CO2/O2 Environment[J]. Corrosion & Protection, 2022, 43(11): 7
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参考文献
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【3】张雅妮, 罗金恒, 林睿.Fe在O2-CO2-H2O环境中的腐蚀研究进展[J].材料保护, 2019, 52(12):139-145.
【4】张家林, 李春福, 张雷, 等.介质温度对35CrMo钢在CO2环境下腐蚀的影响及其机理[J].金属热处理, 2015, 40(2):195-200.
【5】张国安, 路民旭, 吴荫顺.CO2腐蚀产物膜的微观形貌和结构特征[J].材料研究学报, 2005, 19(5):537-548.
【6】孙永涛, 程鹏, 马增华, 等.高温多元热流体注采液中N80钢的腐蚀行为[J].腐蚀与防护, 2012, 33(3):218-221.
【7】HUA Y, BARKER R, NEVILLE A.The effect of O2 content on the corrosion behaviour of X65 and 5Cr in water-containing supercritical CO2 environments[J].Applied Surface Science, 2015, 356:499-511.
【8】LIN X Q, LIU W, WU F, et al.Effect of O2 on corrosion of 3Cr steel in high temperature and high pressure CO2-O2 environment[J].Applied Surface Science, 2015, 329:104-115.
【9】ROSLI R, CHOI Y S, NESIC S, et al. Corrosion of UNS G10180 steel in supercritical and subcritical CO2 with O2 as a contaminant[C]//Corrosion 2016. Houston, Texas:NACE International, 2016:7527.
【10】SHI L H, WANG C Q, ZOU C J.Corrosion failure analysis of L485 natural gas pipeline in CO2 environment[J].Engineering Failure Analysis, 2014, 36:372-378.
【11】Standard Practice for Preparing, Cleaning, and Evaluating Corrosion Test Specimens:ASTM Committee G-1-03(2011)[S].[S.l.]:ASTM international, 2011.
【12】周卫军, 郭瑞, 张勇.CO2分压对SM80SS套管钢在CO2/H2S共存环境中的高温高压腐蚀行为影响[J].全面腐蚀控制, 2009, 23(8):20-23.
【13】李晓旭, 孙礼, 杜健, 等.X系列管线钢的力学性能和显微组织比较[J].管道技术与设备, 2015(5):48-51.
【14】XIE Y, XU L N, GAO C L, et al.Corrosion behavior of novel 3%Cr pipeline steel in CO2 Top-of-Line Corrosion environment[J].Materials & Design, 2012, 36:54-57.
【15】王晓博, 俞宏英, 关望, 等.X52钢在普光气田服役条件下的CO2腐蚀行为[J].材料工程, 2014, 42(8):72-78.
【16】姜厚君, 王忠辉, 王熙淞, 等.L415管线钢在天然气环境中的CO2腐蚀行为研究[J].热加工工艺, 2021, 50(18):83-87.
【17】许彦, 刘迎来, 聂向晖, 等.L415M钢级感应加热弯管过渡区管体的组织性能研究[J].热加工工艺, 2016, 45(16):175-178.
【18】WANG X. The influence of O2 on the corrosion behavior of the X80 steel in CO2 environment[J].International Journal of Electrochemical Science, 2020:889-898.
【19】SKAPERDAS G T, UHLIG H H.Corrosion of steel by dissolved carbon dioxide and oxygen[J].Industrial & Engineering Chemistry, 1942, 34(6):748-754.
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