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Effect of the Surface Morphology of Porous Coatings on Secondary Electron Yield of Metal Surface

Surface roughening is an important material surface treatment technique, and it is particularly useful for use in secondary electron yield (SEY) suppression on metal surfaces. Porous structures produced via roughening on coatings have been confirmed to reduce SEY, but the regulation strategy and the...

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Autores principales: Peng, Min, Lin, Shu, Zhang, Chuxian, Liang, Haifeng, Liu, Chunliang, Cao, Meng, Hu, Wenbo, Zhai, Yonggui, Li, Yongdong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9231154/
https://www.ncbi.nlm.nih.gov/pubmed/35744380
http://dx.doi.org/10.3390/ma15124322
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author Peng, Min
Lin, Shu
Zhang, Chuxian
Liang, Haifeng
Liu, Chunliang
Cao, Meng
Hu, Wenbo
Zhai, Yonggui
Li, Yongdong
author_facet Peng, Min
Lin, Shu
Zhang, Chuxian
Liang, Haifeng
Liu, Chunliang
Cao, Meng
Hu, Wenbo
Zhai, Yonggui
Li, Yongdong
author_sort Peng, Min
collection PubMed
description Surface roughening is an important material surface treatment technique, and it is particularly useful for use in secondary electron yield (SEY) suppression on metal surfaces. Porous structures produced via roughening on coatings have been confirmed to reduce SEY, but the regulation strategy and the influence of process parameters both remain unclear in the practical fabrication of effective porous structures. In this paper, the effect of the surface morphology of porous coatings on the SEY of aluminum alloy substrates was studied. Surface characterization and SEY measurements were carried out for samples with a specific process technique on their surfaces. An exponential fitting model of the correlation between surface roughness and the peak values of SEY curves, [Formula: see text] , was summarized. Furthermore, an implementation strategy to enable low surface SEY was achieved from the analysis of the effect of process parameters on surface morphology formation. This work will aid our understanding of the effect of the irregular surface morphology of porous coatings on SEY, thereby revealing low-cost access to the realization of an easy-to-scale process that enables low SEY.
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spelling pubmed-92311542022-06-25 Effect of the Surface Morphology of Porous Coatings on Secondary Electron Yield of Metal Surface Peng, Min Lin, Shu Zhang, Chuxian Liang, Haifeng Liu, Chunliang Cao, Meng Hu, Wenbo Zhai, Yonggui Li, Yongdong Materials (Basel) Article Surface roughening is an important material surface treatment technique, and it is particularly useful for use in secondary electron yield (SEY) suppression on metal surfaces. Porous structures produced via roughening on coatings have been confirmed to reduce SEY, but the regulation strategy and the influence of process parameters both remain unclear in the practical fabrication of effective porous structures. In this paper, the effect of the surface morphology of porous coatings on the SEY of aluminum alloy substrates was studied. Surface characterization and SEY measurements were carried out for samples with a specific process technique on their surfaces. An exponential fitting model of the correlation between surface roughness and the peak values of SEY curves, [Formula: see text] , was summarized. Furthermore, an implementation strategy to enable low surface SEY was achieved from the analysis of the effect of process parameters on surface morphology formation. This work will aid our understanding of the effect of the irregular surface morphology of porous coatings on SEY, thereby revealing low-cost access to the realization of an easy-to-scale process that enables low SEY. MDPI 2022-06-18 /pmc/articles/PMC9231154/ /pubmed/35744380 http://dx.doi.org/10.3390/ma15124322 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Peng, Min
Lin, Shu
Zhang, Chuxian
Liang, Haifeng
Liu, Chunliang
Cao, Meng
Hu, Wenbo
Zhai, Yonggui
Li, Yongdong
Effect of the Surface Morphology of Porous Coatings on Secondary Electron Yield of Metal Surface
title Effect of the Surface Morphology of Porous Coatings on Secondary Electron Yield of Metal Surface
title_full Effect of the Surface Morphology of Porous Coatings on Secondary Electron Yield of Metal Surface
title_fullStr Effect of the Surface Morphology of Porous Coatings on Secondary Electron Yield of Metal Surface
title_full_unstemmed Effect of the Surface Morphology of Porous Coatings on Secondary Electron Yield of Metal Surface
title_short Effect of the Surface Morphology of Porous Coatings on Secondary Electron Yield of Metal Surface
title_sort effect of the surface morphology of porous coatings on secondary electron yield of metal surface
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9231154/
https://www.ncbi.nlm.nih.gov/pubmed/35744380
http://dx.doi.org/10.3390/ma15124322
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