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Comparing the Corrosion Resistance of 5083 Al and Al(2)O(3)3D/5083 Al Composite in a Chloride Environment

In this study, an Al(2)O(3)3D/5083 Al composite was fabricated by infiltrating a molten 5083 Al alloy into a three-dimensional alumina reticulated porosity ceramics skeleton preform (Al(2)O(3)3D) using a pressureless infiltration method. The corrosion resistance of 5083 Al alloy and Al(2)O(3)3D/5083...

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Autores principales: Yu, Liang, Zhang, Chen, Liu, Yuan, Yan, Yulong, Xu, Pianpian, Jiang, Yanli, Cao, Xiuling
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9821568/
https://www.ncbi.nlm.nih.gov/pubmed/36614427
http://dx.doi.org/10.3390/ma16010086
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author Yu, Liang
Zhang, Chen
Liu, Yuan
Yan, Yulong
Xu, Pianpian
Jiang, Yanli
Cao, Xiuling
author_facet Yu, Liang
Zhang, Chen
Liu, Yuan
Yan, Yulong
Xu, Pianpian
Jiang, Yanli
Cao, Xiuling
author_sort Yu, Liang
collection PubMed
description In this study, an Al(2)O(3)3D/5083 Al composite was fabricated by infiltrating a molten 5083 Al alloy into a three-dimensional alumina reticulated porosity ceramics skeleton preform (Al(2)O(3)3D) using a pressureless infiltration method. The corrosion resistance of 5083 Al alloy and Al(2)O(3)3D/5083 Al in NaCl solution were compared via electrochemical impedance spectroscopy (EIS), dynamic polarization potential (PDP), and neutral salt spray (NSS) tests. The microstructure of the two materials were investigated by 3D X-ray microscope and scanning electron microscopy aiming at understanding the corrosion mechanisms. Results show that an Al(2)O(3)3D/5083 Al composite consists of interpenetrating structure of 3D-continuous matrices of continuous networks 5083 Al alloy and Al(2)O(3)3D phase. A large area of strong interfaces of 5083 Al and Al(2)O(3)3D exist in the Al(2)O(3)3D/5083 Al composite. The corrosion development process can be divided into the initial period, the development period, and the stability period. Al(2)O(3)3D used as reinforcement in Al(2)O(3)3D/5083 Al composite improves the corrosion resistance of Al(2)O(3)3D/5083 Al composite via electrochemistry tests. Thus, the corrosion resistance of Al(2)O(3)3D/5083 Al is higher than that of 5083 Al alloy. The NSS test results indicate that the corrosion resistance of Al(2)O(3)3D/5083 Al was lower than that of 5083 Al alloy during the initial period, higher than that of 5083 Al alloy during the development period, and there was no obvious difference in corrosion resistance during the stability period. It is considered that the elements in 5083 Al alloy infiltrated into the Al(2)O(3)3D/5083 Al composite are segregated, and the uniform distribution of the segregated elements leads to galvanic corrosion during the corrosion initial period. The perfect combination of interfaces of Al(2)O(3)3D and the 5083 Al alloy matrix promotes excellent corrosion resistance during the stability period.
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spelling pubmed-98215682023-01-07 Comparing the Corrosion Resistance of 5083 Al and Al(2)O(3)3D/5083 Al Composite in a Chloride Environment Yu, Liang Zhang, Chen Liu, Yuan Yan, Yulong Xu, Pianpian Jiang, Yanli Cao, Xiuling Materials (Basel) Article In this study, an Al(2)O(3)3D/5083 Al composite was fabricated by infiltrating a molten 5083 Al alloy into a three-dimensional alumina reticulated porosity ceramics skeleton preform (Al(2)O(3)3D) using a pressureless infiltration method. The corrosion resistance of 5083 Al alloy and Al(2)O(3)3D/5083 Al in NaCl solution were compared via electrochemical impedance spectroscopy (EIS), dynamic polarization potential (PDP), and neutral salt spray (NSS) tests. The microstructure of the two materials were investigated by 3D X-ray microscope and scanning electron microscopy aiming at understanding the corrosion mechanisms. Results show that an Al(2)O(3)3D/5083 Al composite consists of interpenetrating structure of 3D-continuous matrices of continuous networks 5083 Al alloy and Al(2)O(3)3D phase. A large area of strong interfaces of 5083 Al and Al(2)O(3)3D exist in the Al(2)O(3)3D/5083 Al composite. The corrosion development process can be divided into the initial period, the development period, and the stability period. Al(2)O(3)3D used as reinforcement in Al(2)O(3)3D/5083 Al composite improves the corrosion resistance of Al(2)O(3)3D/5083 Al composite via electrochemistry tests. Thus, the corrosion resistance of Al(2)O(3)3D/5083 Al is higher than that of 5083 Al alloy. The NSS test results indicate that the corrosion resistance of Al(2)O(3)3D/5083 Al was lower than that of 5083 Al alloy during the initial period, higher than that of 5083 Al alloy during the development period, and there was no obvious difference in corrosion resistance during the stability period. It is considered that the elements in 5083 Al alloy infiltrated into the Al(2)O(3)3D/5083 Al composite are segregated, and the uniform distribution of the segregated elements leads to galvanic corrosion during the corrosion initial period. The perfect combination of interfaces of Al(2)O(3)3D and the 5083 Al alloy matrix promotes excellent corrosion resistance during the stability period. MDPI 2022-12-22 /pmc/articles/PMC9821568/ /pubmed/36614427 http://dx.doi.org/10.3390/ma16010086 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
Yu, Liang
Zhang, Chen
Liu, Yuan
Yan, Yulong
Xu, Pianpian
Jiang, Yanli
Cao, Xiuling
Comparing the Corrosion Resistance of 5083 Al and Al(2)O(3)3D/5083 Al Composite in a Chloride Environment
title Comparing the Corrosion Resistance of 5083 Al and Al(2)O(3)3D/5083 Al Composite in a Chloride Environment
title_full Comparing the Corrosion Resistance of 5083 Al and Al(2)O(3)3D/5083 Al Composite in a Chloride Environment
title_fullStr Comparing the Corrosion Resistance of 5083 Al and Al(2)O(3)3D/5083 Al Composite in a Chloride Environment
title_full_unstemmed Comparing the Corrosion Resistance of 5083 Al and Al(2)O(3)3D/5083 Al Composite in a Chloride Environment
title_short Comparing the Corrosion Resistance of 5083 Al and Al(2)O(3)3D/5083 Al Composite in a Chloride Environment
title_sort comparing the corrosion resistance of 5083 al and al(2)o(3)3d/5083 al composite in a chloride environment
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9821568/
https://www.ncbi.nlm.nih.gov/pubmed/36614427
http://dx.doi.org/10.3390/ma16010086
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