Influence of pH on the Formation, Composition and Protectiveness of Fluoride Conversion Film Deposited on AZ31 Magnesium Alloy in KF Solution

doi:10.1007/s40195-023-01571-2

IMR OpenIR

	Influence of pH on the Formation, Composition and Protectiveness of Fluoride Conversion Film Deposited on AZ31 Magnesium Alloy in KF Solution
	Wu, Liping 1; Liu, Chen 1; Wei, Jie 1; Dong, Junhua 1; Zhao, Lin 1; Li, Chao 1; Ke, Wei 1; Chen, Yiqing 2; Wang, Changgang 1
通讯作者	Dong, Junhua(jhdong@imr.ac.cn) ; Wang, Changgang(cgwang@imr.ac.cn)
	2023-06-23
发表期刊	ACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN	1006-7191
页码	12
摘要	In deaerated 0.1 M KF solution at pH 5, pH 7.5 and pH 9, fluoride films were deposited on AZ31 magnesium (Mg) alloy at - 1.4 V vs saturated calomel electrode (SCE). The morphology, phase composition, elemental and compositional depth distribution of different fluoride films and their influences on the corrosion resistance of AZ31 Mg alloy were explored in detail. The results indicated that the films deposited at weak acidic and nearly neutral pH consisted of two layers with amorphous Mg(OH)(2) and MgF2 as the inner layer, and Mg(OH)(2), MgF2 and KMgF3 crystals the outer layer. The film deposited at alkaline pH was a monolayer structure consisting of amorphous Mg(OH)(2) as the major constitute and MgF2 as the minor constitute. The protectiveness of fluoride film was intimately related to its composition and structure. The content and crystal regularity of KMgF3 were the two main factors influencing the protectiveness of fluoride film. The fluoride film deposited at pH 7.5 offered the best protection to AZ31 Mg alloy.
关键词	Magnesium alloy Potentiostatic deposition Fluoride film KF solution
资助者	National Natural Science Foundation of China ; Major Ramp;D Project of Liaoning province ; State Key laboratory of Metal Material for Marine Equipment and Application ; Youth Innovation Promotion Association of the Chinese Academy of Sciences
DOI	10.1007/s40195-023-01571-2
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51701221] ; Major Ramp;D Project of Liaoning province[2020JH1/10100001] ; State Key laboratory of Metal Material for Marine Equipment and Application[SKLMEA-K201907] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2019193] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[KGFZD-135-19-02]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001011998700001
出版者	CHINESE ACAD SCIENCES, INST METAL RESEARCH
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	http://ir.imr.ac.cn/handle/321006/178400
专题	中国科学院金属研究所
通讯作者	Dong, Junhua; Wang, Changgang
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.State Key Lab Met Mat Marine Equipment & Applicat, Anshan 114009, Peoples R China
推荐引用方式 GB/T 7714	Wu, Liping,Liu, Chen,Wei, Jie,et al. Influence of pH on the Formation, Composition and Protectiveness of Fluoride Conversion Film Deposited on AZ31 Magnesium Alloy in KF Solution[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2023:12.
APA	Wu, Liping.,Liu, Chen.,Wei, Jie.,Dong, Junhua.,Zhao, Lin.,...&Wang, Changgang.(2023).Influence of pH on the Formation, Composition and Protectiveness of Fluoride Conversion Film Deposited on AZ31 Magnesium Alloy in KF Solution.ACTA METALLURGICA SINICA-ENGLISH LETTERS,12.
MLA	Wu, Liping,et al."Influence of pH on the Formation, Composition and Protectiveness of Fluoride Conversion Film Deposited on AZ31 Magnesium Alloy in KF Solution".ACTA METALLURGICA SINICA-ENGLISH LETTERS (2023):12.