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Effect of plasma sprayed flyash based composite coatings on corrosion resistance
With the aim of exploring the possibility of achieving a low-cost thermal spray coating to prevent wear, erosion and corrosion. In the current study, flyash-Al(2)O(3) and flyash-SiC composite coatings were effectively created using the air plasma spray process on substrates of Al6061 alloy. NiCr mat...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Elsevier
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10161717/ https://www.ncbi.nlm.nih.gov/pubmed/37151688 http://dx.doi.org/10.1016/j.heliyon.2023.e15552 |
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author | Naveena, B.E Keshavamurthy, R. Muthiya, Solomon Jenoris Dhanraj, Joshuva Arockia Sirisamphanwong, Chattariya Channumsin, Sittiporn Channumsi, Manun Chowdhury, Shahariar |
author_facet | Naveena, B.E Keshavamurthy, R. Muthiya, Solomon Jenoris Dhanraj, Joshuva Arockia Sirisamphanwong, Chattariya Channumsin, Sittiporn Channumsi, Manun Chowdhury, Shahariar |
author_sort | Naveena, B.E |
collection | PubMed |
description | With the aim of exploring the possibility of achieving a low-cost thermal spray coating to prevent wear, erosion and corrosion. In the current study, flyash-Al(2)O(3) and flyash-SiC composite coatings were effectively created using the air plasma spray process on substrates of Al6061 alloy. NiCr material is used as the bond coat to improve the bond strength between the coat and the substrate. Taguchi's DoE method is applied to for spray process parameters optimization. In addition, the developed coating is subjected to microstructure analysis and long-term immersion corrosion testing (1 year) in an aqueous environment to assess corrosion properties. The results revealed that the over a certain test period, the developed flyash-SiC coating has greater corrosion resistance than the uncoated and flyash-Al(2)O(3) coated Al6061. It is noticed that the corrosion resistance of the flyash-Al(2)O(3) coating shifts to a negative value with respect to the uncoated substrate. The uncoated sample is extensively pitted and locally corroded, as shown by the SEM image of the corroded surface. Flyash-corroded Al(2)O(3)'s surface exhibits extensive degradation in the form of peeling, breaking, and cracking of the splats. With flyash-SiC composite coating a very minor corrosion splat deterioration is seen. |
format | Online Article Text |
id | pubmed-10161717 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Elsevier |
record_format | MEDLINE/PubMed |
spelling | pubmed-101617172023-05-06 Effect of plasma sprayed flyash based composite coatings on corrosion resistance Naveena, B.E Keshavamurthy, R. Muthiya, Solomon Jenoris Dhanraj, Joshuva Arockia Sirisamphanwong, Chattariya Channumsin, Sittiporn Channumsi, Manun Chowdhury, Shahariar Heliyon Research Article With the aim of exploring the possibility of achieving a low-cost thermal spray coating to prevent wear, erosion and corrosion. In the current study, flyash-Al(2)O(3) and flyash-SiC composite coatings were effectively created using the air plasma spray process on substrates of Al6061 alloy. NiCr material is used as the bond coat to improve the bond strength between the coat and the substrate. Taguchi's DoE method is applied to for spray process parameters optimization. In addition, the developed coating is subjected to microstructure analysis and long-term immersion corrosion testing (1 year) in an aqueous environment to assess corrosion properties. The results revealed that the over a certain test period, the developed flyash-SiC coating has greater corrosion resistance than the uncoated and flyash-Al(2)O(3) coated Al6061. It is noticed that the corrosion resistance of the flyash-Al(2)O(3) coating shifts to a negative value with respect to the uncoated substrate. The uncoated sample is extensively pitted and locally corroded, as shown by the SEM image of the corroded surface. Flyash-corroded Al(2)O(3)'s surface exhibits extensive degradation in the form of peeling, breaking, and cracking of the splats. With flyash-SiC composite coating a very minor corrosion splat deterioration is seen. Elsevier 2023-04-17 /pmc/articles/PMC10161717/ /pubmed/37151688 http://dx.doi.org/10.1016/j.heliyon.2023.e15552 Text en © 2023 The Authors. Published by Elsevier Ltd. https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Research Article Naveena, B.E Keshavamurthy, R. Muthiya, Solomon Jenoris Dhanraj, Joshuva Arockia Sirisamphanwong, Chattariya Channumsin, Sittiporn Channumsi, Manun Chowdhury, Shahariar Effect of plasma sprayed flyash based composite coatings on corrosion resistance |
title | Effect of plasma sprayed flyash based composite coatings on corrosion resistance |
title_full | Effect of plasma sprayed flyash based composite coatings on corrosion resistance |
title_fullStr | Effect of plasma sprayed flyash based composite coatings on corrosion resistance |
title_full_unstemmed | Effect of plasma sprayed flyash based composite coatings on corrosion resistance |
title_short | Effect of plasma sprayed flyash based composite coatings on corrosion resistance |
title_sort | effect of plasma sprayed flyash based composite coatings on corrosion resistance |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10161717/ https://www.ncbi.nlm.nih.gov/pubmed/37151688 http://dx.doi.org/10.1016/j.heliyon.2023.e15552 |
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