High corrosion and wear resistance of Al-based amorphous metallic coating synthesized by HVAF spraying

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	High corrosion and wear resistance of Al-based amorphous metallic coating synthesized by HVAF spraying
	Gao, MH; Lu, WY; Yang, BJ; Zhang, SD; Wang, JQ; Wang, JQ (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China.
刊名	JOURNAL OF ALLOYS AND COMPOUNDS
	2018-02-25
卷号	735 页码:1363-1373
关键词	Sodium-chloride Solution Mild-steel Tribological Performance Hydrochloric-acid Magnesium Alloy Stainless-steel Behavior Aluminum Glass Thiosemicarbazone
ISSN号	0925-8388
英文摘要	A uniform and dense Al-based amorphous metallic coating was deposited on AA 2024 substrate by high velocity air fuel (HVAF) spraying. The Al86Ni6Y4.5Co2La1.5 alloy with high glass forming ability was adopted to prepare the feedstock powder. The coating exhibited 0.12% porosity and 83.7% volume fraction of amorphous phase. The corrosion and wear resistance of the coating were investigated compared to AA 2024. It was found that the coating presented an enhanced pitting potential and a lower corrosion potential than that of AA 2024, providing a sacrificial anode-based cathodic protection for the substrate under chloride-containing environment. The excellent corrosion resistance stems from the smaller driving force for the adsorption of aggressive anions and lower carrier density in passive film formed on amorphous coating. The wear resistance of Al-based amorphous coating was apparently superior to AA 2024 substrate, which is primarily associated with the formation of an even and protective oxide film. (C) 2017 Elsevier B.V. All rights reserved.; A uniform and dense Al-based amorphous metallic coating was deposited on AA 2024 substrate by high velocity air fuel (HVAF) spraying. The Al86Ni6Y4.5Co2La1.5 alloy with high glass forming ability was adopted to prepare the feedstock powder. The coating exhibited 0.12% porosity and 83.7% volume fraction of amorphous phase. The corrosion and wear resistance of the coating were investigated compared to AA 2024. It was found that the coating presented an enhanced pitting potential and a lower corrosion potential than that of AA 2024, providing a sacrificial anode-based cathodic protection for the substrate under chloride-containing environment. The excellent corrosion resistance stems from the smaller driving force for the adsorption of aggressive anions and lower carrier density in passive film formed on amorphous coating. The wear resistance of Al-based amorphous coating was apparently superior to AA 2024 substrate, which is primarily associated with the formation of an even and protective oxide film. (C) 2017 Elsevier B.V. All rights reserved.
学科主题	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
语种	英语
资助机构	National Key Research and Development Program of China [2016YFB1100204]; National Natural Science Foundation of China [51471166, 51131006]
公开日期	2018-06-05
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/79488]
专题	金属研究所_中国科学院金属研究所
通讯作者	Wang, JQ (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China.
推荐引用方式 GB/T 7714	Gao, MH,Lu, WY,Yang, BJ,et al. High corrosion and wear resistance of Al-based amorphous metallic coating synthesized by HVAF spraying[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2018,735:1363-1373.
APA	Gao, MH,Lu, WY,Yang, BJ,Zhang, SD,Wang, JQ,&Wang, JQ .(2018).High corrosion and wear resistance of Al-based amorphous metallic coating synthesized by HVAF spraying.JOURNAL OF ALLOYS AND COMPOUNDS,735,1363-1373.
MLA	Gao, MH,et al."High corrosion and wear resistance of Al-based amorphous metallic coating synthesized by HVAF spraying".JOURNAL OF ALLOYS AND COMPOUNDS 735(2018):1363-1373.