The corrosion behavior in CO2 medium of 20# steel under the (CO2/aqueous solution) gas-liquid two-phase stratified flow condition
Yang Gui-rong1; Song Wen-ming2; Wang Fu-qiang1; Ma Ying1; Hao Yuan1
2019-01
Source PublicationMATERIALS RESEARCH EXPRESS
ISSN2053-1591
Volume6Issue:1
AbstractThe corrosion rate, morphology, and composition of corrosion products of 20# seamless steel in CO2 medium under gas-liquid two-phase stratified flow conditions (CO2/aqueous solution) have been investigated using the weight loss method, scanning electron microscopy with energy-dispersive x-ray spectroscopy, and x-ray diffraction. The forming mechanism of corrosion products has been discussed. Results showed the irregular zigzag trend of the corrosion rate curve with the gradual extension of corrosion time. The corrosion rate peaked at corrosion times of 4 and 8 h, with the values reaching 1.49 and 0.647 mm/a, respectively. At the beginning of the corrosion process, a layer of special iron oxide formed rapidly on the 20# steel surface. The local corrosion products with cell shape precipitate and grow on the special iron oxide surface with the extension of corrosion time, and the initial corrosion product is mainly strip-shaped along the CO2 gas flow direction. The local cellular corrosion products extended along the perpendicular direction of gas flow to gradually form an entire covering product layer with the extension of corrosion time. The main phases of corrosion products include FeCO3 and iron oxides. The loose inner layer mainly comprised Fe3C and little amount FeCO3, whereas the dense outer layer was mainly composed of FeCO3 and a few iron oxides. The loose corrosion product layer presented a period of densification after formation.
Keyword20# seamless steel CO2 corrosion stratified flow corrosion products characteristics mechanism
DOI10.1088/2053-1591/aae667
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51765035] ; Scientific Research Project for Higher School of Gansu Province of China[2017A-015]
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Multidisciplinary
WOS IDWOS:000517551800001
PublisherIOP PUBLISHING LTD
Citation statistics
Cited Times [WOS]:0   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.lut.edu.cn/handle/2XXMBERH/64121
Collection材料科学与工程学院
机电工程学院
省部共建有色金属先进加工与再利用国家重点实验室
Corresponding AuthorYang Gui-rong
Affiliation1.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China
2.Lanpec Technol Ltd, Lanzhou 730070, Peoples R China
First Author AffilicationState Key Laboratory Of Gansu Advanced Non-Ferrous Metal Materials
Corresponding Author AffilicationState Key Laboratory Of Gansu Advanced Non-Ferrous Metal Materials
First Signature AffilicationState Key Laboratory Of Gansu Advanced Non-Ferrous Metal Materials
Recommended Citation
GB/T 7714
Yang Gui-rong,Song Wen-ming,Wang Fu-qiang,et al. The corrosion behavior in CO2 medium of 20# steel under the (CO2/aqueous solution) gas-liquid two-phase stratified flow condition[J]. MATERIALS RESEARCH EXPRESS,2019,6(1).
APA Yang Gui-rong,Song Wen-ming,Wang Fu-qiang,Ma Ying,&Hao Yuan.(2019).The corrosion behavior in CO2 medium of 20# steel under the (CO2/aqueous solution) gas-liquid two-phase stratified flow condition.MATERIALS RESEARCH EXPRESS,6(1).
MLA Yang Gui-rong,et al."The corrosion behavior in CO2 medium of 20# steel under the (CO2/aqueous solution) gas-liquid two-phase stratified flow condition".MATERIALS RESEARCH EXPRESS 6.1(2019).
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