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Corrosion Resistance of Nanostructured Cemented Carbides with Alternative FeNi and FeNiCo Binders

Nanostructured cemented carbides with Co binders have shown excellent mechanical properties in various applications. Nevertheless, their corrosion resistance has shown to be insufficient in different corrosive environments, leading to premature tool failure. In this study, WC-based cemented carbide...

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Autores principales: Aleksandrov Fabijanić, Tamara, Šnajdar, Mateja, Kurtela, Marin, Šimunović, Vedran, Marciuš, Marijan, Klaić, Miho
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10142917/
https://www.ncbi.nlm.nih.gov/pubmed/37110992
http://dx.doi.org/10.3390/nano13081407
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author Aleksandrov Fabijanić, Tamara
Šnajdar, Mateja
Kurtela, Marin
Šimunović, Vedran
Marciuš, Marijan
Klaić, Miho
author_facet Aleksandrov Fabijanić, Tamara
Šnajdar, Mateja
Kurtela, Marin
Šimunović, Vedran
Marciuš, Marijan
Klaić, Miho
author_sort Aleksandrov Fabijanić, Tamara
collection PubMed
description Nanostructured cemented carbides with Co binders have shown excellent mechanical properties in various applications. Nevertheless, their corrosion resistance has shown to be insufficient in different corrosive environments, leading to premature tool failure. In this study, WC-based cemented carbide samples with different binders were produced using 9 wt% of FeNi or FeNiCo with the addition of Cr(3)C(2) and NbC as the grain growth inhibitors. The samples were investigated using electrochemical corrosion techniques: the open circuit potential E(corr), the linear polarization resistance (LPR), the Tafel extrapolation method, and the electrochemical impedance spectroscopy (EIS) at room temperature in the solution of 3.5% NaCl. Microstructure characterization, surface texture analysis, and instrumented indentation were conducted to investigate the influence of corrosion on the micro-mechanical properties and the surface characteristics of the samples before and after corrosion. The obtained results indicate a strong binder chemical composition’s effect on the consolidated materials’ corrosive behavior. Compared to the conventional WC-Co systems, a significantly improved corrosion resistance was observed for both alternative binder systems. The study shows that the samples with the FeNi binder are superior to those with the FeNiCo binder since they were almost unaffected when exposed to the acidic medium.
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spelling pubmed-101429172023-04-29 Corrosion Resistance of Nanostructured Cemented Carbides with Alternative FeNi and FeNiCo Binders Aleksandrov Fabijanić, Tamara Šnajdar, Mateja Kurtela, Marin Šimunović, Vedran Marciuš, Marijan Klaić, Miho Nanomaterials (Basel) Article Nanostructured cemented carbides with Co binders have shown excellent mechanical properties in various applications. Nevertheless, their corrosion resistance has shown to be insufficient in different corrosive environments, leading to premature tool failure. In this study, WC-based cemented carbide samples with different binders were produced using 9 wt% of FeNi or FeNiCo with the addition of Cr(3)C(2) and NbC as the grain growth inhibitors. The samples were investigated using electrochemical corrosion techniques: the open circuit potential E(corr), the linear polarization resistance (LPR), the Tafel extrapolation method, and the electrochemical impedance spectroscopy (EIS) at room temperature in the solution of 3.5% NaCl. Microstructure characterization, surface texture analysis, and instrumented indentation were conducted to investigate the influence of corrosion on the micro-mechanical properties and the surface characteristics of the samples before and after corrosion. The obtained results indicate a strong binder chemical composition’s effect on the consolidated materials’ corrosive behavior. Compared to the conventional WC-Co systems, a significantly improved corrosion resistance was observed for both alternative binder systems. The study shows that the samples with the FeNi binder are superior to those with the FeNiCo binder since they were almost unaffected when exposed to the acidic medium. MDPI 2023-04-19 /pmc/articles/PMC10142917/ /pubmed/37110992 http://dx.doi.org/10.3390/nano13081407 Text en © 2023 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
Aleksandrov Fabijanić, Tamara
Šnajdar, Mateja
Kurtela, Marin
Šimunović, Vedran
Marciuš, Marijan
Klaić, Miho
Corrosion Resistance of Nanostructured Cemented Carbides with Alternative FeNi and FeNiCo Binders
title Corrosion Resistance of Nanostructured Cemented Carbides with Alternative FeNi and FeNiCo Binders
title_full Corrosion Resistance of Nanostructured Cemented Carbides with Alternative FeNi and FeNiCo Binders
title_fullStr Corrosion Resistance of Nanostructured Cemented Carbides with Alternative FeNi and FeNiCo Binders
title_full_unstemmed Corrosion Resistance of Nanostructured Cemented Carbides with Alternative FeNi and FeNiCo Binders
title_short Corrosion Resistance of Nanostructured Cemented Carbides with Alternative FeNi and FeNiCo Binders
title_sort corrosion resistance of nanostructured cemented carbides with alternative feni and fenico binders
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10142917/
https://www.ncbi.nlm.nih.gov/pubmed/37110992
http://dx.doi.org/10.3390/nano13081407
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