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Heat Treatment Effect on the Phase Composition of the Silica Electrochemical Coating and the Carbon Fiber Strength
This work is devoted to the study of the chemical and phase composition of a carbon fiber coating obtained by the electrochemical sol-gel method. The experimental data obtained using several independent complementary methods, including X-ray phase analysis, thermogravimetric and differential thermal...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8467730/ https://www.ncbi.nlm.nih.gov/pubmed/34576431 http://dx.doi.org/10.3390/ma14185209 |
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author | Galyshev, Sergei Postnova, Evgeniya Shakhlevich, Olga Agarkov, Dmitrii Agarkova, Ekaterina Nekrasov, Alexey Mozhchil, Rais |
author_facet | Galyshev, Sergei Postnova, Evgeniya Shakhlevich, Olga Agarkov, Dmitrii Agarkova, Ekaterina Nekrasov, Alexey Mozhchil, Rais |
author_sort | Galyshev, Sergei |
collection | PubMed |
description | This work is devoted to the study of the chemical and phase composition of a carbon fiber coating obtained by the electrochemical sol-gel method. The experimental data obtained using several independent complementary methods, including X-ray phase analysis, thermogravimetric and differential thermal analysis, scanning electron microscopy and elemental analysis, and X-ray photoelectron spectroscopy, are in good agreement with each other. It was found that the resulting coating consists of amorphous silicon oxide and crystalline potassium carbonate. Heating above 870 °C leads to the crystallization of cristobalite from amorphous silicon dioxide. At a temperature of about 870 °C, the coating acquires a smooth surface, and heating above 1170 °C leads to its destruction. Thus, the optimum temperature for the heat treatment of the coating is about 870 °C. The loss of strength of carbon fiber at each stage of coating was estimated. A full coating cycle, including thermal cleaning from the sizing, coating, and heat treatment, results in a loss of fiber strength by only 11% compared to the initial state. |
format | Online Article Text |
id | pubmed-8467730 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-84677302021-09-27 Heat Treatment Effect on the Phase Composition of the Silica Electrochemical Coating and the Carbon Fiber Strength Galyshev, Sergei Postnova, Evgeniya Shakhlevich, Olga Agarkov, Dmitrii Agarkova, Ekaterina Nekrasov, Alexey Mozhchil, Rais Materials (Basel) Article This work is devoted to the study of the chemical and phase composition of a carbon fiber coating obtained by the electrochemical sol-gel method. The experimental data obtained using several independent complementary methods, including X-ray phase analysis, thermogravimetric and differential thermal analysis, scanning electron microscopy and elemental analysis, and X-ray photoelectron spectroscopy, are in good agreement with each other. It was found that the resulting coating consists of amorphous silicon oxide and crystalline potassium carbonate. Heating above 870 °C leads to the crystallization of cristobalite from amorphous silicon dioxide. At a temperature of about 870 °C, the coating acquires a smooth surface, and heating above 1170 °C leads to its destruction. Thus, the optimum temperature for the heat treatment of the coating is about 870 °C. The loss of strength of carbon fiber at each stage of coating was estimated. A full coating cycle, including thermal cleaning from the sizing, coating, and heat treatment, results in a loss of fiber strength by only 11% compared to the initial state. MDPI 2021-09-10 /pmc/articles/PMC8467730/ /pubmed/34576431 http://dx.doi.org/10.3390/ma14185209 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 Galyshev, Sergei Postnova, Evgeniya Shakhlevich, Olga Agarkov, Dmitrii Agarkova, Ekaterina Nekrasov, Alexey Mozhchil, Rais Heat Treatment Effect on the Phase Composition of the Silica Electrochemical Coating and the Carbon Fiber Strength |
title | Heat Treatment Effect on the Phase Composition of the Silica Electrochemical Coating and the Carbon Fiber Strength |
title_full | Heat Treatment Effect on the Phase Composition of the Silica Electrochemical Coating and the Carbon Fiber Strength |
title_fullStr | Heat Treatment Effect on the Phase Composition of the Silica Electrochemical Coating and the Carbon Fiber Strength |
title_full_unstemmed | Heat Treatment Effect on the Phase Composition of the Silica Electrochemical Coating and the Carbon Fiber Strength |
title_short | Heat Treatment Effect on the Phase Composition of the Silica Electrochemical Coating and the Carbon Fiber Strength |
title_sort | heat treatment effect on the phase composition of the silica electrochemical coating and the carbon fiber strength |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8467730/ https://www.ncbi.nlm.nih.gov/pubmed/34576431 http://dx.doi.org/10.3390/ma14185209 |
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