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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.
2018-02-25
Source PublicationJOURNAL OF ALLOYS AND COMPOUNDS
ISSN0925-8388
Volume735Pages:1363-1373
AbstractA 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.
description.department[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
KeywordSodium-chloride Solution Mild-steel Tribological Performance Hydrochloric-acid Magnesium Alloy Stainless-steel Behavior Aluminum Glass Thiosemicarbazone
Subject AreaChemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
Funding OrganizationNational Key Research and Development Program of China [2016YFB1100204]; National Natural Science Foundation of China [51471166, 51131006]
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/79488
Collection中国科学院金属研究所
Corresponding AuthorWang, JQ (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China.
Recommended Citation
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.
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