Voltage Dependence of Nanopattern Morphology and Size in Electropolished Monocrystalline Aluminum: An Experimental Study
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Published:2022-05-01
Issue:5
Volume:169
Page:053512
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ISSN:0013-4651
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Container-title:Journal of The Electrochemical Society
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language:
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Short-container-title:J. Electrochem. Soc.
Author:
Yuan Yuan,
Zhang Dan,
Zhang Guoxu,
Zhang Peng,
Zhang Feihu,
Yang Chunhui,
Gan YangORCID
Abstract
The crystallographic orientation dependence of nanopattern morphology and size of electropolished Al at a fixed voltage (40 V) has been revealed and established. However, systematic experimental studies, with samples’ crystallographic orientation exactly determined, on the effects of voltage on nanopattern morphology and size has been largely lacking. Here, miscut monocrystalline Al samples are electropolished in a common electrolyte at voltages 20–60 V. Various nanopatterns (pits, pits plus stripes, stripes, dots) with distinct morphologies emerge with increasing voltage. The findings that morphologies transform gradually with misorientation angle were explained from the perspective of surface structure sensitivity. Nanopattern sizes remain largely constant with misorientation angles but increase with voltages till about 40 V, level off and decrease at higher voltage. A reported model was reexamined to explain the observed voltage dependence of nanopattern size by considering the overlooked effects of voltage on dissolution and adsorption. These findings reveal the voltage and crystallographic orientation dependence of nanopattern morphology and size, and provide critical data for theoretical investigation into the nanopattern formation mechanism of electropolished Al.
Funder
National Natural Science Foundation of China
NSAF
National Key Research and Development Program of the Ministry of Science and Technology (MOST) of the People’s Republic of China
Fundamental Research Funds for the Central Universities
Heilongjiang Touyan Team HITTY
Publisher
The Electrochemical Society
Subject
Materials Chemistry,Electrochemistry,Surfaces, Coatings and Films,Condensed Matter Physics,Renewable Energy, Sustainability and the Environment,Electronic, Optical and Magnetic Materials
Cited by
1 articles.
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