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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MDPI AG
2021-09-01
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| Online Access: | https://www.mdpi.com/1996-1944/14/18/5209 |
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| author | Sergei Galyshev Evgeniya Postnova Olga Shakhlevich Dmitrii Agarkov Ekaterina Agarkova Alexey Nekrasov Rais Mozhchil |
| author_facet | Sergei Galyshev Evgeniya Postnova Olga Shakhlevich Dmitrii Agarkov Ekaterina Agarkova Alexey Nekrasov Rais Mozhchil |
| author_sort | Sergei Galyshev |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-03-10T07:29:22Z |
| format | Article |
| id | doaj.art-d29639433335404283a7aba9fff9efe7 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T07:29:22Z |
| publishDate | 2021-09-01 |
| publisher | MDPI AG |
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| series | Materials |
| spelling | doaj.art-d29639433335404283a7aba9fff9efe72023-11-22T14:00:29ZengMDPI AGMaterials1996-19442021-09-011418520910.3390/ma14185209Heat Treatment Effect on the Phase Composition of the Silica Electrochemical Coating and the Carbon Fiber StrengthSergei Galyshev0Evgeniya Postnova1Olga Shakhlevich2Dmitrii Agarkov3Ekaterina Agarkova4Alexey Nekrasov5Rais Mozhchil6Osipyan Institute of Solid State Physics RAS, 142432 Chernogolovka, RussiaOsipyan Institute of Solid State Physics RAS, 142432 Chernogolovka, RussiaOsipyan Institute of Solid State Physics RAS, 142432 Chernogolovka, RussiaOsipyan Institute of Solid State Physics RAS, 142432 Chernogolovka, RussiaOsipyan Institute of Solid State Physics RAS, 142432 Chernogolovka, RussiaInstitute of Experimental Mineralogy, Russian Academy of Sciences, 142432 Chernogolovka, Moscow Region, RussiaOsipyan Institute of Solid State Physics RAS, 142432 Chernogolovka, RussiaThis 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.https://www.mdpi.com/1996-1944/14/18/5209carbon fiber coatingelectrochemical sol-gel coatingsilica coatingcarbon fiber |
| spellingShingle | Sergei Galyshev Evgeniya Postnova Olga Shakhlevich Dmitrii Agarkov Ekaterina Agarkova Alexey Nekrasov Rais Mozhchil Heat Treatment Effect on the Phase Composition of the Silica Electrochemical Coating and the Carbon Fiber Strength Materials carbon fiber coating electrochemical sol-gel coating silica coating carbon fiber |
| 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 | carbon fiber coating electrochemical sol-gel coating silica coating carbon fiber |
| url | https://www.mdpi.com/1996-1944/14/18/5209 |
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