Role of oxidants in the anodic oxidation of 2024 aluminum alloy by dominating anodic and cathodic processes

doi:10.1016/j.colsurfa.2024.135229

IMR OpenIR

	Role of oxidants in the anodic oxidation of 2024 aluminum alloy by dominating anodic and cathodic processes
	Xu, Jianing 1,2; Song, Yingwei 1,2; He, Kezhun 3; Zhang, Hang 3; Dong, Kaihui 1,2; Cai, Yong 1,2; Han, En-Hou 1,4,5
通讯作者	Song, Yingwei(ywsong@imr.ac.cn)
	2024-11-20
发表期刊	COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
ISSN	0927-7757
卷号	703 页码:12
摘要	The addition of oxidants into the electrolyte of Al anodic oxidation can alter the anodic and cathodic reactions, further affects the quality of the oxide film. In this paper, the role of two typical oxidants of H2O2 2 O 2 and Na2MoO4 2 MoO 4 in the microstructure and corrosion resistance of the oxide film on 2024 aluminum alloy was investigated by the scanning electron microscopy (SEM), Mott Schottky plots and electrochemical impedance spectroscopy (EIS). The addition of H2O2 2 O 2 increases the oxygen evolution amount on the anode Al and more oxygen can participate in the oxide film formation to improve the compactness. The addition of Na2MoO4 2 MoO 4 results in the deposit of MoO2 2 on the cathode plate to accelerate the hydrogen evolution reaction by the catalytic action of the MoO2, 2 , which further accelerates the anodic reaction to form a thick oxide film. As a result, the corrosion resistance of the oxide film is significantly improved by adding H2O2 2 O 2 or Na2MoO4 2 MoO 4 due to the promotion of film thickness and compactness.
关键词	2024 aluminum alloy Oxidant Anodic oxidation Compactness Corrosion resistance
资助者	Guangxi Science and Technology Major Program
DOI	10.1016/j.colsurfa.2024.135229
收录类别	SCI
语种	英语
资助项目	Guangxi Science and Technology Major Program[AA23023029] ; Guangxi Science and Technology Major Program[AA23023031]
WOS研究方向	Chemistry
WOS类目	Chemistry, Physical
WOS记录号	WOS:001306298800001
出版者	ELSEVIER
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/189563
专题	中国科学院金属研究所
通讯作者	Song, Yingwei
作者单位	1.Chinese Acad Sci, Key Lab Nucl Mat & Safety Assessment, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.ALG Aluminium Inc, Guangxi Key Lab Mat & Proc Aluminum Alloys, Nanning 530031, Peoples R China 4.Inst Corros Sci & Technol, Guangzhou 510530, Peoples R China 5.South China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510641, Peoples R China
推荐引用方式 GB/T 7714	Xu, Jianing,Song, Yingwei,He, Kezhun,et al. Role of oxidants in the anodic oxidation of 2024 aluminum alloy by dominating anodic and cathodic processes[J]. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,2024,703:12.
APA	Xu, Jianing.,Song, Yingwei.,He, Kezhun.,Zhang, Hang.,Dong, Kaihui.,...&Han, En-Hou.(2024).Role of oxidants in the anodic oxidation of 2024 aluminum alloy by dominating anodic and cathodic processes.COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,703,12.
MLA	Xu, Jianing,et al."Role of oxidants in the anodic oxidation of 2024 aluminum alloy by dominating anodic and cathodic processes".COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS 703(2024):12.