Experimental study of corrosion resistance of 431M2 stainless steel coatings in a CO2-saturated NaCl solution deposited by extreme high-speed laser cladding

doi:10.1016/j.mtcomm.2024.108202

IMR OpenIR

	Experimental study of corrosion resistance of 431M2 stainless steel coatings in a CO2-saturated NaCl solution deposited by extreme high-speed laser cladding
	Li, Chen 1; Liu, Zhenhui 1; Huang, Fule 1; Dong, Junhua 2; Wang, Changgang 2; Yuan, Jun 1; Fu, Qijun 3
通讯作者	Li, Chen(lich@gxu.edu.cn) ; Fu, Qijun(furuwen2008@163.com)
	2024-03-01
发表期刊	MATERIALS TODAY COMMUNICATIONS
卷号	38 页码:15
摘要	Corrosion of pipeline steel is an important issue affecting the safe transport of CO2 in Carbon Capture, Utilisation and Storage (CCUS) systems. Therefore, in this paper, 431M2 coatings were prepared by extreme high-speed laser cladding (EHLC) and conventional laser cladding (CL), and the differences in the microstructures of the two coatings as well as their corrosion resistance in CO2-saturated solutions containing O2 at pH 2.0-4.0 were analysed by means of electrochemical tests and offline characterisation. It was found that, different from the CL coatings with severe elemental segregation, preferential corrosion within the dendrites, and no obvious passivation characteristics at pH 2.0-4.0, the EHLC coatings had superior resistance to uniform corrosion and pitting at pH 2.0-4.0, which was related to the finer dendritic size, higher content of low angular grain boundaries, and weak elemental segregation. As the pH value decreased, the number of defects in the passivation film of EHLC coatings increased and the corrosion resistance decreased. The excellent corrosion resistance of EHLC coatings at low pH conditions was related to the high Cr2O3 percentage in the passivation film.
关键词	Extreme high -speed laser metal deposition Electrochemical measurement CO2 corrosion
资助者	National Natural Science Foundation of China ; Beijing Natural Science Foundation ; Inner Mongolia Key R & D Pro- gram of China ; Fund for Less Developed Regions of the National Natural Scienc`e Foundation of China
DOI	10.1016/j.mtcomm.2024.108202
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[52271082] ; Beijing Natural Science Foundation[2222074] ; Inner Mongolia Key R & D Pro- gram of China[2021ZD0038] ; Fund for Less Developed Regions of the National Natural Scienc`e Foundation of China[52265005]
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:001178973800001
出版者	ELSEVIER
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/184732
专题	中国科学院金属研究所
通讯作者	Li, Chen; Fu, Qijun
作者单位	1.Guangxi Univ, Coll Mech Engn, Nanning 530004, Guangxi, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 3.Nanning Sugar Ind Co Ltd, Nanning 530023, Guangxi, Peoples R China
推荐引用方式 GB/T 7714	Li, Chen,Liu, Zhenhui,Huang, Fule,et al. Experimental study of corrosion resistance of 431M2 stainless steel coatings in a CO2-saturated NaCl solution deposited by extreme high-speed laser cladding[J]. MATERIALS TODAY COMMUNICATIONS,2024,38:15.
APA	Li, Chen.,Liu, Zhenhui.,Huang, Fule.,Dong, Junhua.,Wang, Changgang.,...&Fu, Qijun.(2024).Experimental study of corrosion resistance of 431M2 stainless steel coatings in a CO2-saturated NaCl solution deposited by extreme high-speed laser cladding.MATERIALS TODAY COMMUNICATIONS,38,15.
MLA	Li, Chen,et al."Experimental study of corrosion resistance of 431M2 stainless steel coatings in a CO2-saturated NaCl solution deposited by extreme high-speed laser cladding".MATERIALS TODAY COMMUNICATIONS 38(2024):15.