Corrosion resistance mechanisms of detonation sprayed Fe-based amorphous coating on AZ31B magnesium alloy

doi:10.1016/j.jnoncrysol.2021.121276

	Corrosion resistance mechanisms of detonation sprayed Fe-based amorphous coating on AZ31B magnesium alloy
	Zhai, Haimin 2,3; Yuan, Huayan 2,3; Li, Wensheng 2,3; Zhang, Xinjian 2,3; Li, Xiaosong 1; Cai, Anhui 1
刊名	Journal of Non-Crystalline Solids
	2022-01-15
卷号	576
关键词	Corrosion resistance Corrosion resistant alloys Corrosion resistant coatings Detonation Passivation Sodium chloride Alloy substrates AZ31B magnesium alloys Chloride ions Corrosion mechanisms Detonation gun Fe-based amorphous coatings Microstructure mechanism Passivating films Potentiodynamic polarization tests Resistance mechanisms
ISSN号	0022-3093
DOI	10.1016/j.jnoncrysol.2021.121276
英文摘要	The microstructure and corrosion mechanisms of the detonation sprayed Fe-based amorphous coating on AZ31B magnesium alloy substrate were studied in detail by potentiodynamic polarization tests in 3.5 wt.% NaCl solution. The results show that the coating presents a typical amorphous structure, a fairly low porosity of less than 1%. Benefit from these structural advantages, the corrosion current density and impedance modulus \|Z\| are about 1/20 and 70 times that of AZ31B, respectively, which shows excellent corrosion resistance and protection. This distinguished corrosion resistance is mainly attributed to its unique disordered structure, uniform chemical composition, and the formation of uniform passive film on the surface, which hinders the invasion of chloride ions and prevents the further occurrence of corrosion. In addition, the ultra-high density of detonation sprayed coating also further hinders the penetration of corrosive media such as chloride ions, and provides a good corrosion protection for AZ31B. © 2021 Elsevier B.V.
语种	英语
出版者	Elsevier B.V.
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/157915]
专题	材料科学与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
作者单位	1.Hunan Provincial Key Laboratory of Electromagnetic Equipment Design and Manufacturing, Hunan Institute of Science and Technology, Yueyang; 414000, China 2.State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China; 3.School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou; 730050, China;
推荐引用方式 GB/T 7714	Zhai, Haimin,Yuan, Huayan,Li, Wensheng,et al. Corrosion resistance mechanisms of detonation sprayed Fe-based amorphous coating on AZ31B magnesium alloy[J]. Journal of Non-Crystalline Solids,2022,576.
APA	Zhai, Haimin,Yuan, Huayan,Li, Wensheng,Zhang, Xinjian,Li, Xiaosong,&Cai, Anhui.(2022).Corrosion resistance mechanisms of detonation sprayed Fe-based amorphous coating on AZ31B magnesium alloy.Journal of Non-Crystalline Solids,576.
MLA	Zhai, Haimin,et al."Corrosion resistance mechanisms of detonation sprayed Fe-based amorphous coating on AZ31B magnesium alloy".Journal of Non-Crystalline Solids 576(2022).