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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...

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Autores principales: Galyshev, Sergei, Postnova, Evgeniya, Shakhlevich, Olga, Agarkov, Dmitrii, Agarkova, Ekaterina, Nekrasov, Alexey, Mozhchil, Rais
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
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.
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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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