Mesoscopic transformation at initial corrosion stage of 20# steel in aqueous solution under gas-liquid two-phase stratified flow condition

doi:10.1108/ACMM-02-2020-2257

	Mesoscopic transformation at initial corrosion stage of 20# steel in aqueous solution under gas-liquid two-phase stratified flow condition
	Yang, Guirong1 ; Pan, Zhaoxia 1; Zhang, Zhenghai 1; Song, Wenming 2; Ma, Ying1 ; Hao, Yuan 1
	2021-05-25
发表期刊	ANTI-CORROSION METHODS AND MATERIALS
ISSN	0003-5599
卷号	68 期号:2 页码:53-63
摘要	Purpose This study aims to investigate the initial corrosion behavior in aqueous solution of 20# seamless steel under (CO2/aqueous solution) gas-liquid two-phase stratified flow conditions. Design/methodology/approach The initial corrosion behavior was studied through the weight loss methods, scanning electron microscopy with energy-dispersive x-ray spectroscopy and x-ray diffraction. Findings The corrosion rate of 20# steel obviously increases with the increasing gas pressure at different corrosion time when the CO2 pressure is less than 0.11 MPa, and the increase of corrosion rate tends to be steady when the pressure exceeds 0.11 MPa. With the increase of CO2 pressure, the corrosion products changed from flocculent to acicular, granular and scaly. A four-stage model for the growth of the corrosion product layer was proposed, namely, the diffusion reaction stage, the local film formation stage, the complete film formation stage and the densification stage of the product film. Originality/value A four-stage model for the growth of the corrosion product layer on the pipe wall surface under this condition was proposed, namely, the diffusion reaction stage, the local film formation stage, the complete film formation stage and the densification stage of the product film. The growing process and densification mechanism of corrosion products layer were discussed.
关键词	CO2 corrosion Stratified flow Corrosion product layer growth model Densification process
DOI	10.1108/ACMM-02-2020-2257
收录类别	SCIE ; SCOPUS ; EI
语种	英语
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000634607100001
出版者	EMERALD GROUP PUBLISHING LTD
来源库	WOS
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/148290
专题	材料科学与工程学院
通讯作者	Yang, Guirong
作者单位	1.Lanzhou Univ Technol, Lanzhou, Peoples R China; 2.Lanpec Technol Ltd, Lanzhou, Peoples R China
第一作者单位	兰州理工大学
通讯作者单位	兰州理工大学
第一作者的第一单位	兰州理工大学
推荐引用方式 GB/T 7714	Yang, Guirong,Pan, Zhaoxia,Zhang, Zhenghai,et al. Mesoscopic transformation at initial corrosion stage of 20# steel in aqueous solution under gas-liquid two-phase stratified flow condition[J]. ANTI-CORROSION METHODS AND MATERIALS,2021,68(2):53-63.
APA	Yang, Guirong,Pan, Zhaoxia,Zhang, Zhenghai,Song, Wenming,Ma, Ying,&Hao, Yuan.(2021).Mesoscopic transformation at initial corrosion stage of 20# steel in aqueous solution under gas-liquid two-phase stratified flow condition.ANTI-CORROSION METHODS AND MATERIALS,68(2),53-63.
MLA	Yang, Guirong,et al."Mesoscopic transformation at initial corrosion stage of 20# steel in aqueous solution under gas-liquid two-phase stratified flow condition".ANTI-CORROSION METHODS AND MATERIALS 68.2(2021):53-63.