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Effect of the Alloying Metal on the Corrosion Resistance of Pd-Rich Binary Alloys with Pt, Rh, and Ru in Sulfuric Acid

The paper presents the study of the corrosion resistance of electrodeposited Pd and its binary alloys with Pt, Rh, and Ru on a polycrystalline Au substrate. The corrosion resistance was tested in 0.5 M sulfuric acid at room temperature using potentiodynamic polarization and electrochemical impedance...

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Detalles Bibliográficos
Autores principales: Hubkowska, Katarzyna, Kubisztal, Julian, Pająk, Małgorzata, Łosiewicz, Bożena, Czerwiński, Andrzej
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8198221/
https://www.ncbi.nlm.nih.gov/pubmed/34071575
http://dx.doi.org/10.3390/ma14112923
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author Hubkowska, Katarzyna
Kubisztal, Julian
Pająk, Małgorzata
Łosiewicz, Bożena
Czerwiński, Andrzej
author_facet Hubkowska, Katarzyna
Kubisztal, Julian
Pająk, Małgorzata
Łosiewicz, Bożena
Czerwiński, Andrzej
author_sort Hubkowska, Katarzyna
collection PubMed
description The paper presents the study of the corrosion resistance of electrodeposited Pd and its binary alloys with Pt, Rh, and Ru on a polycrystalline Au substrate. The corrosion resistance was tested in 0.5 M sulfuric acid at room temperature using potentiodynamic polarization and electrochemical impedance spectroscopy techniques. The morphology/composition and work function values were determined by scanning electron microscopy/energy–dispersive X–ray spectroscopy and scanning Kelvin probe, respectively. The obtained results revealed that the Pd electrode is the most resistant to corrosion, whereas the Pd-Ru electrode is the most susceptible to dissolution. It was found that the corrosion resistance of Pd-binary alloys decrease in the following order: Pd > Pd-Pt > Pd-Rh > Pd-Ru. This effect was assigned mainly to the difference in surface roughness factor of tested electrodes.
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spelling pubmed-81982212021-06-14 Effect of the Alloying Metal on the Corrosion Resistance of Pd-Rich Binary Alloys with Pt, Rh, and Ru in Sulfuric Acid Hubkowska, Katarzyna Kubisztal, Julian Pająk, Małgorzata Łosiewicz, Bożena Czerwiński, Andrzej Materials (Basel) Article The paper presents the study of the corrosion resistance of electrodeposited Pd and its binary alloys with Pt, Rh, and Ru on a polycrystalline Au substrate. The corrosion resistance was tested in 0.5 M sulfuric acid at room temperature using potentiodynamic polarization and electrochemical impedance spectroscopy techniques. The morphology/composition and work function values were determined by scanning electron microscopy/energy–dispersive X–ray spectroscopy and scanning Kelvin probe, respectively. The obtained results revealed that the Pd electrode is the most resistant to corrosion, whereas the Pd-Ru electrode is the most susceptible to dissolution. It was found that the corrosion resistance of Pd-binary alloys decrease in the following order: Pd > Pd-Pt > Pd-Rh > Pd-Ru. This effect was assigned mainly to the difference in surface roughness factor of tested electrodes. MDPI 2021-05-28 /pmc/articles/PMC8198221/ /pubmed/34071575 http://dx.doi.org/10.3390/ma14112923 Text en © 2021 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
Hubkowska, Katarzyna
Kubisztal, Julian
Pająk, Małgorzata
Łosiewicz, Bożena
Czerwiński, Andrzej
Effect of the Alloying Metal on the Corrosion Resistance of Pd-Rich Binary Alloys with Pt, Rh, and Ru in Sulfuric Acid
title Effect of the Alloying Metal on the Corrosion Resistance of Pd-Rich Binary Alloys with Pt, Rh, and Ru in Sulfuric Acid
title_full Effect of the Alloying Metal on the Corrosion Resistance of Pd-Rich Binary Alloys with Pt, Rh, and Ru in Sulfuric Acid
title_fullStr Effect of the Alloying Metal on the Corrosion Resistance of Pd-Rich Binary Alloys with Pt, Rh, and Ru in Sulfuric Acid
title_full_unstemmed Effect of the Alloying Metal on the Corrosion Resistance of Pd-Rich Binary Alloys with Pt, Rh, and Ru in Sulfuric Acid
title_short Effect of the Alloying Metal on the Corrosion Resistance of Pd-Rich Binary Alloys with Pt, Rh, and Ru in Sulfuric Acid
title_sort effect of the alloying metal on the corrosion resistance of pd-rich binary alloys with pt, rh, and ru in sulfuric acid
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8198221/
https://www.ncbi.nlm.nih.gov/pubmed/34071575
http://dx.doi.org/10.3390/ma14112923
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