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The Influence of Graded Amount of Potassium Permanganate on Corrosion of Hot-Dip Galvanized Steel in Simulated Concrete Pore Solutions
This paper evaluates the amount of KMnO(4) in simulated concrete pore solution (pH 12.8) on the corrosion behaviour of hot-dip galvanized steel (HDG). In the range of used MnO(4)(−) (10(−4), 10(−3), 10(−2) mol·L(−1)), corrosion behaviour is examined with regard to hydrogen evolution and composition...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9656999/ https://www.ncbi.nlm.nih.gov/pubmed/36363454 http://dx.doi.org/10.3390/ma15217864 |
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author | Pokorný, Petr Vacek, Vítězslav Prodanovic, Nikola Zabloudil, Adam Fojt, Jaroslav Johánek, Viktor |
author_facet | Pokorný, Petr Vacek, Vítězslav Prodanovic, Nikola Zabloudil, Adam Fojt, Jaroslav Johánek, Viktor |
author_sort | Pokorný, Petr |
collection | PubMed |
description | This paper evaluates the amount of KMnO(4) in simulated concrete pore solution (pH 12.8) on the corrosion behaviour of hot-dip galvanized steel (HDG). In the range of used MnO(4)(−) (10(−4), 10(−3), 10(−2) mol·L(−1)), corrosion behaviour is examined with regard to hydrogen evolution and composition (protective barrier properties) of forming corrosion products. The corrosion behaviour of HDG samples is evaluated using R(p)/E(corr) and EIS. The composition of corrosion products is evaluated using SEM, XRD, XPS and AAS. The effective MnO(4)(−) ion concentration to prevent the corrosion of coating with hydrogen evolution is 10(−3) mol·L(−1); lower concentrations only prolong the time to passivation (corrosion with hydrogen evolution). The highest used MnO(4)(−) concentration ensures corrosion behaviour without hydrogen evolution but also leads to the formation of less-protective amorphous corrosion products rich in Mn(II)/Mn(III) phases. |
format | Online Article Text |
id | pubmed-9656999 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-96569992022-11-15 The Influence of Graded Amount of Potassium Permanganate on Corrosion of Hot-Dip Galvanized Steel in Simulated Concrete Pore Solutions Pokorný, Petr Vacek, Vítězslav Prodanovic, Nikola Zabloudil, Adam Fojt, Jaroslav Johánek, Viktor Materials (Basel) Article This paper evaluates the amount of KMnO(4) in simulated concrete pore solution (pH 12.8) on the corrosion behaviour of hot-dip galvanized steel (HDG). In the range of used MnO(4)(−) (10(−4), 10(−3), 10(−2) mol·L(−1)), corrosion behaviour is examined with regard to hydrogen evolution and composition (protective barrier properties) of forming corrosion products. The corrosion behaviour of HDG samples is evaluated using R(p)/E(corr) and EIS. The composition of corrosion products is evaluated using SEM, XRD, XPS and AAS. The effective MnO(4)(−) ion concentration to prevent the corrosion of coating with hydrogen evolution is 10(−3) mol·L(−1); lower concentrations only prolong the time to passivation (corrosion with hydrogen evolution). The highest used MnO(4)(−) concentration ensures corrosion behaviour without hydrogen evolution but also leads to the formation of less-protective amorphous corrosion products rich in Mn(II)/Mn(III) phases. MDPI 2022-11-07 /pmc/articles/PMC9656999/ /pubmed/36363454 http://dx.doi.org/10.3390/ma15217864 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 Pokorný, Petr Vacek, Vítězslav Prodanovic, Nikola Zabloudil, Adam Fojt, Jaroslav Johánek, Viktor The Influence of Graded Amount of Potassium Permanganate on Corrosion of Hot-Dip Galvanized Steel in Simulated Concrete Pore Solutions |
title | The Influence of Graded Amount of Potassium Permanganate on Corrosion of Hot-Dip Galvanized Steel in Simulated Concrete Pore Solutions |
title_full | The Influence of Graded Amount of Potassium Permanganate on Corrosion of Hot-Dip Galvanized Steel in Simulated Concrete Pore Solutions |
title_fullStr | The Influence of Graded Amount of Potassium Permanganate on Corrosion of Hot-Dip Galvanized Steel in Simulated Concrete Pore Solutions |
title_full_unstemmed | The Influence of Graded Amount of Potassium Permanganate on Corrosion of Hot-Dip Galvanized Steel in Simulated Concrete Pore Solutions |
title_short | The Influence of Graded Amount of Potassium Permanganate on Corrosion of Hot-Dip Galvanized Steel in Simulated Concrete Pore Solutions |
title_sort | influence of graded amount of potassium permanganate on corrosion of hot-dip galvanized steel in simulated concrete pore solutions |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9656999/ https://www.ncbi.nlm.nih.gov/pubmed/36363454 http://dx.doi.org/10.3390/ma15217864 |
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