Highly crystalline SiCf/SiC composites produced by particle enhanced polymer impregnation and pyrolysis (PE-PIP)
Silicon carbide fiber (SiCf) reinforced/silicon carbide (SiC) matrix composites (SiCf/SiC) produced by polymer impregnation and pyrolysis (PIP) typically exhibit low density and crystallinity due to the formation of a SiCxOy amorphous matrix. This compromises the mechanical and thermal properties of...
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| Language: | English |
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Elsevier
2025-01-01
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| Series: | Materials & Design |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127524009262 |
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| author | Can Akaoglu Junquan Lao Kerui Wei Philip J. Withers Ping Xiao |
| author_facet | Can Akaoglu Junquan Lao Kerui Wei Philip J. Withers Ping Xiao |
| author_sort | Can Akaoglu |
| collection | DOAJ |
| description | Silicon carbide fiber (SiCf) reinforced/silicon carbide (SiC) matrix composites (SiCf/SiC) produced by polymer impregnation and pyrolysis (PIP) typically exhibit low density and crystallinity due to the formation of a SiCxOy amorphous matrix. This compromises the mechanical and thermal properties of the composites. Here, a particle enhanced PIP (PE-PIP) method is proposed whereby fine silicon carbide particles (SiCp) containing amorphous silica (SiO2) layer are incorporated into the liquid poly (carbosilane) (PCS)-based precursor. The addition of SiCp improved the bulk density and decreased the open porosity of the composites compared to conventional PIP processing. After heat treatment at 1400 °C for 8 h, the true density of the composites was enhanced further with a reduced carbon content via the carbothermal reactions between SiO2 and the excess carbon present in the PIP matrix. However, the bulk density reduced due to increased open porosity which could be sealed by subsequent processing. This novel processing approach has the potential to deliver high density, high crystallinity SiCf/SiC with low carbon content by PIP at low temperature (1400 °C). |
| format | Article |
| id | doaj-art-8287db0335c34d5abd8af73d4f0ddd00 |
| institution | Kabale University |
| issn | 0264-1275 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj-art-8287db0335c34d5abd8af73d4f0ddd002025-01-09T06:12:23ZengElsevierMaterials & Design0264-12752025-01-01249113551Highly crystalline SiCf/SiC composites produced by particle enhanced polymer impregnation and pyrolysis (PE-PIP)Can Akaoglu0Junquan Lao1Kerui Wei2Philip J. Withers3Ping Xiao4Department of Materials, Henry Royce Institute, University of Manchester, Manchester M13 9PL, UKDepartment of Materials, Henry Royce Institute, University of Manchester, Manchester M13 9PL, UKDepartment of Materials, Henry Royce Institute, University of Manchester, Manchester M13 9PL, UKDepartment of Materials, Henry Royce Institute, University of Manchester, Manchester M13 9PL, UKCorresponding author.; Department of Materials, Henry Royce Institute, University of Manchester, Manchester M13 9PL, UKSilicon carbide fiber (SiCf) reinforced/silicon carbide (SiC) matrix composites (SiCf/SiC) produced by polymer impregnation and pyrolysis (PIP) typically exhibit low density and crystallinity due to the formation of a SiCxOy amorphous matrix. This compromises the mechanical and thermal properties of the composites. Here, a particle enhanced PIP (PE-PIP) method is proposed whereby fine silicon carbide particles (SiCp) containing amorphous silica (SiO2) layer are incorporated into the liquid poly (carbosilane) (PCS)-based precursor. The addition of SiCp improved the bulk density and decreased the open porosity of the composites compared to conventional PIP processing. After heat treatment at 1400 °C for 8 h, the true density of the composites was enhanced further with a reduced carbon content via the carbothermal reactions between SiO2 and the excess carbon present in the PIP matrix. However, the bulk density reduced due to increased open porosity which could be sealed by subsequent processing. This novel processing approach has the potential to deliver high density, high crystallinity SiCf/SiC with low carbon content by PIP at low temperature (1400 °C).http://www.sciencedirect.com/science/article/pii/S0264127524009262Polymer impregnation and pyrolysisSiC compositesDensity and crystallinityCarbon reductionProcessing |
| spellingShingle | Can Akaoglu Junquan Lao Kerui Wei Philip J. Withers Ping Xiao Highly crystalline SiCf/SiC composites produced by particle enhanced polymer impregnation and pyrolysis (PE-PIP) Materials & Design Polymer impregnation and pyrolysis SiC composites Density and crystallinity Carbon reduction Processing |
| title | Highly crystalline SiCf/SiC composites produced by particle enhanced polymer impregnation and pyrolysis (PE-PIP) |
| title_full | Highly crystalline SiCf/SiC composites produced by particle enhanced polymer impregnation and pyrolysis (PE-PIP) |
| title_fullStr | Highly crystalline SiCf/SiC composites produced by particle enhanced polymer impregnation and pyrolysis (PE-PIP) |
| title_full_unstemmed | Highly crystalline SiCf/SiC composites produced by particle enhanced polymer impregnation and pyrolysis (PE-PIP) |
| title_short | Highly crystalline SiCf/SiC composites produced by particle enhanced polymer impregnation and pyrolysis (PE-PIP) |
| title_sort | highly crystalline sicf sic composites produced by particle enhanced polymer impregnation and pyrolysis pe pip |
| topic | Polymer impregnation and pyrolysis SiC composites Density and crystallinity Carbon reduction Processing |
| url | http://www.sciencedirect.com/science/article/pii/S0264127524009262 |
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