Microstructural Analysis of Novel Preceramic Paper-Derived SiC<sub>f</sub>/SiC Composites
This paper presents the results of microstructural analysis of novel preceramic paper-derived SiCf/SiC composites fabricated by spark plasma sintering. The sintering temperature and pressure were 2100/2200 °C and 60/100 MPa, respectively. The content of fibers in the composites was approx. 10 wt %....
Guardado en:
Autores principales: | , , , , , , , , , , , , |
---|---|
Formato: | article |
Lenguaje: | EN |
Publicado: |
MDPI AG
2021
|
Materias: | |
Acceso en línea: | https://doaj.org/article/92467ff972cb4e038f462d2826867bbc |
Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
id |
oai:doaj.org-article:92467ff972cb4e038f462d2826867bbc |
---|---|
record_format |
dspace |
spelling |
oai:doaj.org-article:92467ff972cb4e038f462d2826867bbc2021-11-25T18:13:10ZMicrostructural Analysis of Novel Preceramic Paper-Derived SiC<sub>f</sub>/SiC Composites10.3390/ma142267371996-1944https://doaj.org/article/92467ff972cb4e038f462d2826867bbc2021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/22/6737https://doaj.org/toc/1996-1944This paper presents the results of microstructural analysis of novel preceramic paper-derived SiCf/SiC composites fabricated by spark plasma sintering. The sintering temperature and pressure were 2100/2200 °C and 60/100 MPa, respectively. The content of fibers in the composites was approx. 10 wt %. The SiC<sub>f</sub>/SiC composites were analyzed by positron annihilation methods, X-ray diffraction technology, scanning electron microscopy, and Raman spectroscopy. Longer sintering time causes the proportion of the 6H-SiC composition to increase to ~80%. The increase in sintering temperature from 2100 °C to 2200 °C leads to partial transition of 4H-SiC to 6H-SiC during the sintering process, and the long-life component of positrons indicates the formation of Si vacancies. The Raman characteristic peaks of turbostratic graphite appear in the Raman spectrum of SiC fibers, this is caused by the diffusion of carbon from the surface of the SiC fiber and the preceramic paper during the high-temperature sintering process.Ke LiEgor KashkarovHailiang MaPing FanQiaoli ZhangPeng ZhangJilong ZhangZhaohui WuLarissa WahlRoman LaptevAndrey LiderNahum TravitzkyDaqing YuanMDPI AGarticlelaminated compositesilicon carbidemicrostructurespositron annihilationTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6737, p 6737 (2021) |
institution |
DOAJ |
collection |
DOAJ |
language |
EN |
topic |
laminated composite silicon carbide microstructures positron annihilation Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 |
spellingShingle |
laminated composite silicon carbide microstructures positron annihilation Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Ke Li Egor Kashkarov Hailiang Ma Ping Fan Qiaoli Zhang Peng Zhang Jilong Zhang Zhaohui Wu Larissa Wahl Roman Laptev Andrey Lider Nahum Travitzky Daqing Yuan Microstructural Analysis of Novel Preceramic Paper-Derived SiC<sub>f</sub>/SiC Composites |
description |
This paper presents the results of microstructural analysis of novel preceramic paper-derived SiCf/SiC composites fabricated by spark plasma sintering. The sintering temperature and pressure were 2100/2200 °C and 60/100 MPa, respectively. The content of fibers in the composites was approx. 10 wt %. The SiC<sub>f</sub>/SiC composites were analyzed by positron annihilation methods, X-ray diffraction technology, scanning electron microscopy, and Raman spectroscopy. Longer sintering time causes the proportion of the 6H-SiC composition to increase to ~80%. The increase in sintering temperature from 2100 °C to 2200 °C leads to partial transition of 4H-SiC to 6H-SiC during the sintering process, and the long-life component of positrons indicates the formation of Si vacancies. The Raman characteristic peaks of turbostratic graphite appear in the Raman spectrum of SiC fibers, this is caused by the diffusion of carbon from the surface of the SiC fiber and the preceramic paper during the high-temperature sintering process. |
format |
article |
author |
Ke Li Egor Kashkarov Hailiang Ma Ping Fan Qiaoli Zhang Peng Zhang Jilong Zhang Zhaohui Wu Larissa Wahl Roman Laptev Andrey Lider Nahum Travitzky Daqing Yuan |
author_facet |
Ke Li Egor Kashkarov Hailiang Ma Ping Fan Qiaoli Zhang Peng Zhang Jilong Zhang Zhaohui Wu Larissa Wahl Roman Laptev Andrey Lider Nahum Travitzky Daqing Yuan |
author_sort |
Ke Li |
title |
Microstructural Analysis of Novel Preceramic Paper-Derived SiC<sub>f</sub>/SiC Composites |
title_short |
Microstructural Analysis of Novel Preceramic Paper-Derived SiC<sub>f</sub>/SiC Composites |
title_full |
Microstructural Analysis of Novel Preceramic Paper-Derived SiC<sub>f</sub>/SiC Composites |
title_fullStr |
Microstructural Analysis of Novel Preceramic Paper-Derived SiC<sub>f</sub>/SiC Composites |
title_full_unstemmed |
Microstructural Analysis of Novel Preceramic Paper-Derived SiC<sub>f</sub>/SiC Composites |
title_sort |
microstructural analysis of novel preceramic paper-derived sic<sub>f</sub>/sic composites |
publisher |
MDPI AG |
publishDate |
2021 |
url |
https://doaj.org/article/92467ff972cb4e038f462d2826867bbc |
work_keys_str_mv |
AT keli microstructuralanalysisofnovelpreceramicpaperderivedsicsubfsubsiccomposites AT egorkashkarov microstructuralanalysisofnovelpreceramicpaperderivedsicsubfsubsiccomposites AT hailiangma microstructuralanalysisofnovelpreceramicpaperderivedsicsubfsubsiccomposites AT pingfan microstructuralanalysisofnovelpreceramicpaperderivedsicsubfsubsiccomposites AT qiaolizhang microstructuralanalysisofnovelpreceramicpaperderivedsicsubfsubsiccomposites AT pengzhang microstructuralanalysisofnovelpreceramicpaperderivedsicsubfsubsiccomposites AT jilongzhang microstructuralanalysisofnovelpreceramicpaperderivedsicsubfsubsiccomposites AT zhaohuiwu microstructuralanalysisofnovelpreceramicpaperderivedsicsubfsubsiccomposites AT larissawahl microstructuralanalysisofnovelpreceramicpaperderivedsicsubfsubsiccomposites AT romanlaptev microstructuralanalysisofnovelpreceramicpaperderivedsicsubfsubsiccomposites AT andreylider microstructuralanalysisofnovelpreceramicpaperderivedsicsubfsubsiccomposites AT nahumtravitzky microstructuralanalysisofnovelpreceramicpaperderivedsicsubfsubsiccomposites AT daqingyuan microstructuralanalysisofnovelpreceramicpaperderivedsicsubfsubsiccomposites |
_version_ |
1718411451758018560 |