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

IMR OpenIR

	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.
	2018-02-25
发表期刊	JOURNAL OF ALLOYS AND COMPOUNDS
ISSN	0925-8388
卷号	735 页码:1363-1373
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.
部门归属	[gao, minghao ; lu, weiyan ; yang, baijun ; zhang, suode ; wang, jianqiang] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, liaoning, peoples r china ; [gao, minghao] univ sci & technol china, sch mat sci & engn, hefei 230026, anhui, peoples r china
关键词	Sodium-chloride Solution Mild-steel Tribological Performance Hydrochloric-acid Magnesium Alloy Stainless-steel Behavior Aluminum Glass Thiosemicarbazone
学科领域	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
资助者	National Key Research and Development Program of China [2016YFB1100204]; National Natural Science Foundation of China [51471166, 51131006]
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/79488
专题	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.