Three-dimensional CNT lamellae reinforced SiC for enhanced mechanical and electromagnetic shielding properties
Large-sized carbon nanotube lamella/silicon carbide matrix (CNTL/SiC) composites were fabricated by infiltrating SiC into a lamellar CNT skeleton as a matrix, which avoids the uneven dispersion and high-temperature sintering damage resulting from easily agglomerated CNTs. Due to the highly aligned l...
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Gespeichert in:
| Autor*in: |
Mei, Hui [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2020transfer abstract |
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| Umfang: |
9 |
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| Übergeordnetes Werk: |
Enthalten in: Soil and water bioengineering: Practice and research needs for reconciling natural hazard control and ecological restoration - Rey, F. ELSEVIER, 2018, Amsterdam [u.a.] |
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| Übergeordnetes Werk: |
volume:46 ; year:2020 ; number:16 ; pages:25008-25016 ; extent:9 |
| Links: |
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| DOI / URN: |
10.1016/j.ceramint.2020.06.286 |
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ELV051549107 |
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| 245 | 1 | 0 | |a Three-dimensional CNT lamellae reinforced SiC for enhanced mechanical and electromagnetic shielding properties |
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| 520 | |a Large-sized carbon nanotube lamella/silicon carbide matrix (CNTL/SiC) composites were fabricated by infiltrating SiC into a lamellar CNT skeleton as a matrix, which avoids the uneven dispersion and high-temperature sintering damage resulting from easily agglomerated CNTs. Due to the highly aligned lamellar structure of the CNTL, the compressive properties of the CNTL/SiC composites were anisotropic and were increased by increasing the number of CVI cycles. The in-plane compressive strengths were higher than the out-of-plane compressive strengths. The flexural strength was as high as 240 ± 5 MPa after 6 CVI cycles. After fracture, the CNTs were pulled-out from matrix, indicating that the CNTs played the main role in bearing load, enhancing the mechanical properties. Since the CNTL/SiC possessed numerous channels, the electromagnetic (EM) waves could be trapped and attenuated by repeated reflection and absorption, yielding outstanding electromagnetic interference (EMI) shielding effectiveness. The total shielding effectiveness (SET) values were significantly determined by the thickness and number of CVI cycles. Consequently, the SET values of the CNTL/SiC reached 33.1–35.7 dB, which means that the EMI shielding effectiveness is excellent. | ||
| 520 | |a Large-sized carbon nanotube lamella/silicon carbide matrix (CNTL/SiC) composites were fabricated by infiltrating SiC into a lamellar CNT skeleton as a matrix, which avoids the uneven dispersion and high-temperature sintering damage resulting from easily agglomerated CNTs. Due to the highly aligned lamellar structure of the CNTL, the compressive properties of the CNTL/SiC composites were anisotropic and were increased by increasing the number of CVI cycles. The in-plane compressive strengths were higher than the out-of-plane compressive strengths. The flexural strength was as high as 240 ± 5 MPa after 6 CVI cycles. After fracture, the CNTs were pulled-out from matrix, indicating that the CNTs played the main role in bearing load, enhancing the mechanical properties. Since the CNTL/SiC possessed numerous channels, the electromagnetic (EM) waves could be trapped and attenuated by repeated reflection and absorption, yielding outstanding electromagnetic interference (EMI) shielding effectiveness. The total shielding effectiveness (SET) values were significantly determined by the thickness and number of CVI cycles. Consequently, the SET values of the CNTL/SiC reached 33.1–35.7 dB, which means that the EMI shielding effectiveness is excellent. | ||
| 650 | 7 | |a Carbon nanotube/silicon carbide composites |2 Elsevier | |
| 650 | 7 | |a Chemical vapor infiltration |2 Elsevier | |
| 650 | 7 | |a Mechanical properties |2 Elsevier | |
| 650 | 7 | |a Electromagnetic interference shielding effectiveness |2 Elsevier | |
| 700 | 1 | |a Fan, Yuntian |4 oth | |
| 700 | 1 | |a Yan, Yuekai |4 oth | |
| 700 | 1 | |a Han, Daoyang |4 oth | |
| 700 | 1 | |a Cheng, Laifei |4 oth | |
| 773 | 0 | 8 | |i Enthalten in |n Elsevier Science |a Rey, F. ELSEVIER |t Soil and water bioengineering: Practice and research needs for reconciling natural hazard control and ecological restoration |d 2018 |g Amsterdam [u.a.] |w (DE-627)ELV000899798 |
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10.1016/j.ceramint.2020.06.286 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001375.pica (DE-627)ELV051549107 (ELSEVIER)S0272-8842(20)31958-1 DE-627 ger DE-627 rakwb eng 333.7 610 VZ 43.12 bkl 43.13 bkl 44.13 bkl Mei, Hui verfasserin aut Three-dimensional CNT lamellae reinforced SiC for enhanced mechanical and electromagnetic shielding properties 2020transfer abstract 9 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Large-sized carbon nanotube lamella/silicon carbide matrix (CNTL/SiC) composites were fabricated by infiltrating SiC into a lamellar CNT skeleton as a matrix, which avoids the uneven dispersion and high-temperature sintering damage resulting from easily agglomerated CNTs. Due to the highly aligned lamellar structure of the CNTL, the compressive properties of the CNTL/SiC composites were anisotropic and were increased by increasing the number of CVI cycles. The in-plane compressive strengths were higher than the out-of-plane compressive strengths. The flexural strength was as high as 240 ± 5 MPa after 6 CVI cycles. After fracture, the CNTs were pulled-out from matrix, indicating that the CNTs played the main role in bearing load, enhancing the mechanical properties. Since the CNTL/SiC possessed numerous channels, the electromagnetic (EM) waves could be trapped and attenuated by repeated reflection and absorption, yielding outstanding electromagnetic interference (EMI) shielding effectiveness. The total shielding effectiveness (SET) values were significantly determined by the thickness and number of CVI cycles. Consequently, the SET values of the CNTL/SiC reached 33.1–35.7 dB, which means that the EMI shielding effectiveness is excellent. Large-sized carbon nanotube lamella/silicon carbide matrix (CNTL/SiC) composites were fabricated by infiltrating SiC into a lamellar CNT skeleton as a matrix, which avoids the uneven dispersion and high-temperature sintering damage resulting from easily agglomerated CNTs. Due to the highly aligned lamellar structure of the CNTL, the compressive properties of the CNTL/SiC composites were anisotropic and were increased by increasing the number of CVI cycles. The in-plane compressive strengths were higher than the out-of-plane compressive strengths. The flexural strength was as high as 240 ± 5 MPa after 6 CVI cycles. After fracture, the CNTs were pulled-out from matrix, indicating that the CNTs played the main role in bearing load, enhancing the mechanical properties. Since the CNTL/SiC possessed numerous channels, the electromagnetic (EM) waves could be trapped and attenuated by repeated reflection and absorption, yielding outstanding electromagnetic interference (EMI) shielding effectiveness. The total shielding effectiveness (SET) values were significantly determined by the thickness and number of CVI cycles. Consequently, the SET values of the CNTL/SiC reached 33.1–35.7 dB, which means that the EMI shielding effectiveness is excellent. Carbon nanotube/silicon carbide composites Elsevier Chemical vapor infiltration Elsevier Mechanical properties Elsevier Electromagnetic interference shielding effectiveness Elsevier Fan, Yuntian oth Yan, Yuekai oth Han, Daoyang oth Cheng, Laifei oth Enthalten in Elsevier Science Rey, F. ELSEVIER Soil and water bioengineering: Practice and research needs for reconciling natural hazard control and ecological restoration 2018 Amsterdam [u.a.] (DE-627)ELV000899798 volume:46 year:2020 number:16 pages:25008-25016 extent:9 https://doi.org/10.1016/j.ceramint.2020.06.286 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA SSG-OPC-GGO 43.12 Umweltchemie VZ 43.13 Umwelttoxikologie VZ 44.13 Medizinische Ökologie VZ AR 46 2020 16 25008-25016 9 |
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10.1016/j.ceramint.2020.06.286 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001375.pica (DE-627)ELV051549107 (ELSEVIER)S0272-8842(20)31958-1 DE-627 ger DE-627 rakwb eng 333.7 610 VZ 43.12 bkl 43.13 bkl 44.13 bkl Mei, Hui verfasserin aut Three-dimensional CNT lamellae reinforced SiC for enhanced mechanical and electromagnetic shielding properties 2020transfer abstract 9 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Large-sized carbon nanotube lamella/silicon carbide matrix (CNTL/SiC) composites were fabricated by infiltrating SiC into a lamellar CNT skeleton as a matrix, which avoids the uneven dispersion and high-temperature sintering damage resulting from easily agglomerated CNTs. Due to the highly aligned lamellar structure of the CNTL, the compressive properties of the CNTL/SiC composites were anisotropic and were increased by increasing the number of CVI cycles. The in-plane compressive strengths were higher than the out-of-plane compressive strengths. The flexural strength was as high as 240 ± 5 MPa after 6 CVI cycles. After fracture, the CNTs were pulled-out from matrix, indicating that the CNTs played the main role in bearing load, enhancing the mechanical properties. Since the CNTL/SiC possessed numerous channels, the electromagnetic (EM) waves could be trapped and attenuated by repeated reflection and absorption, yielding outstanding electromagnetic interference (EMI) shielding effectiveness. The total shielding effectiveness (SET) values were significantly determined by the thickness and number of CVI cycles. Consequently, the SET values of the CNTL/SiC reached 33.1–35.7 dB, which means that the EMI shielding effectiveness is excellent. Large-sized carbon nanotube lamella/silicon carbide matrix (CNTL/SiC) composites were fabricated by infiltrating SiC into a lamellar CNT skeleton as a matrix, which avoids the uneven dispersion and high-temperature sintering damage resulting from easily agglomerated CNTs. Due to the highly aligned lamellar structure of the CNTL, the compressive properties of the CNTL/SiC composites were anisotropic and were increased by increasing the number of CVI cycles. The in-plane compressive strengths were higher than the out-of-plane compressive strengths. The flexural strength was as high as 240 ± 5 MPa after 6 CVI cycles. After fracture, the CNTs were pulled-out from matrix, indicating that the CNTs played the main role in bearing load, enhancing the mechanical properties. Since the CNTL/SiC possessed numerous channels, the electromagnetic (EM) waves could be trapped and attenuated by repeated reflection and absorption, yielding outstanding electromagnetic interference (EMI) shielding effectiveness. The total shielding effectiveness (SET) values were significantly determined by the thickness and number of CVI cycles. Consequently, the SET values of the CNTL/SiC reached 33.1–35.7 dB, which means that the EMI shielding effectiveness is excellent. Carbon nanotube/silicon carbide composites Elsevier Chemical vapor infiltration Elsevier Mechanical properties Elsevier Electromagnetic interference shielding effectiveness Elsevier Fan, Yuntian oth Yan, Yuekai oth Han, Daoyang oth Cheng, Laifei oth Enthalten in Elsevier Science Rey, F. ELSEVIER Soil and water bioengineering: Practice and research needs for reconciling natural hazard control and ecological restoration 2018 Amsterdam [u.a.] (DE-627)ELV000899798 volume:46 year:2020 number:16 pages:25008-25016 extent:9 https://doi.org/10.1016/j.ceramint.2020.06.286 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA SSG-OPC-GGO 43.12 Umweltchemie VZ 43.13 Umwelttoxikologie VZ 44.13 Medizinische Ökologie VZ AR 46 2020 16 25008-25016 9 |
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10.1016/j.ceramint.2020.06.286 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001375.pica (DE-627)ELV051549107 (ELSEVIER)S0272-8842(20)31958-1 DE-627 ger DE-627 rakwb eng 333.7 610 VZ 43.12 bkl 43.13 bkl 44.13 bkl Mei, Hui verfasserin aut Three-dimensional CNT lamellae reinforced SiC for enhanced mechanical and electromagnetic shielding properties 2020transfer abstract 9 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Large-sized carbon nanotube lamella/silicon carbide matrix (CNTL/SiC) composites were fabricated by infiltrating SiC into a lamellar CNT skeleton as a matrix, which avoids the uneven dispersion and high-temperature sintering damage resulting from easily agglomerated CNTs. Due to the highly aligned lamellar structure of the CNTL, the compressive properties of the CNTL/SiC composites were anisotropic and were increased by increasing the number of CVI cycles. The in-plane compressive strengths were higher than the out-of-plane compressive strengths. The flexural strength was as high as 240 ± 5 MPa after 6 CVI cycles. After fracture, the CNTs were pulled-out from matrix, indicating that the CNTs played the main role in bearing load, enhancing the mechanical properties. Since the CNTL/SiC possessed numerous channels, the electromagnetic (EM) waves could be trapped and attenuated by repeated reflection and absorption, yielding outstanding electromagnetic interference (EMI) shielding effectiveness. The total shielding effectiveness (SET) values were significantly determined by the thickness and number of CVI cycles. Consequently, the SET values of the CNTL/SiC reached 33.1–35.7 dB, which means that the EMI shielding effectiveness is excellent. Large-sized carbon nanotube lamella/silicon carbide matrix (CNTL/SiC) composites were fabricated by infiltrating SiC into a lamellar CNT skeleton as a matrix, which avoids the uneven dispersion and high-temperature sintering damage resulting from easily agglomerated CNTs. Due to the highly aligned lamellar structure of the CNTL, the compressive properties of the CNTL/SiC composites were anisotropic and were increased by increasing the number of CVI cycles. The in-plane compressive strengths were higher than the out-of-plane compressive strengths. The flexural strength was as high as 240 ± 5 MPa after 6 CVI cycles. After fracture, the CNTs were pulled-out from matrix, indicating that the CNTs played the main role in bearing load, enhancing the mechanical properties. Since the CNTL/SiC possessed numerous channels, the electromagnetic (EM) waves could be trapped and attenuated by repeated reflection and absorption, yielding outstanding electromagnetic interference (EMI) shielding effectiveness. The total shielding effectiveness (SET) values were significantly determined by the thickness and number of CVI cycles. Consequently, the SET values of the CNTL/SiC reached 33.1–35.7 dB, which means that the EMI shielding effectiveness is excellent. Carbon nanotube/silicon carbide composites Elsevier Chemical vapor infiltration Elsevier Mechanical properties Elsevier Electromagnetic interference shielding effectiveness Elsevier Fan, Yuntian oth Yan, Yuekai oth Han, Daoyang oth Cheng, Laifei oth Enthalten in Elsevier Science Rey, F. ELSEVIER Soil and water bioengineering: Practice and research needs for reconciling natural hazard control and ecological restoration 2018 Amsterdam [u.a.] (DE-627)ELV000899798 volume:46 year:2020 number:16 pages:25008-25016 extent:9 https://doi.org/10.1016/j.ceramint.2020.06.286 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA SSG-OPC-GGO 43.12 Umweltchemie VZ 43.13 Umwelttoxikologie VZ 44.13 Medizinische Ökologie VZ AR 46 2020 16 25008-25016 9 |
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10.1016/j.ceramint.2020.06.286 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001375.pica (DE-627)ELV051549107 (ELSEVIER)S0272-8842(20)31958-1 DE-627 ger DE-627 rakwb eng 333.7 610 VZ 43.12 bkl 43.13 bkl 44.13 bkl Mei, Hui verfasserin aut Three-dimensional CNT lamellae reinforced SiC for enhanced mechanical and electromagnetic shielding properties 2020transfer abstract 9 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Large-sized carbon nanotube lamella/silicon carbide matrix (CNTL/SiC) composites were fabricated by infiltrating SiC into a lamellar CNT skeleton as a matrix, which avoids the uneven dispersion and high-temperature sintering damage resulting from easily agglomerated CNTs. Due to the highly aligned lamellar structure of the CNTL, the compressive properties of the CNTL/SiC composites were anisotropic and were increased by increasing the number of CVI cycles. The in-plane compressive strengths were higher than the out-of-plane compressive strengths. The flexural strength was as high as 240 ± 5 MPa after 6 CVI cycles. After fracture, the CNTs were pulled-out from matrix, indicating that the CNTs played the main role in bearing load, enhancing the mechanical properties. Since the CNTL/SiC possessed numerous channels, the electromagnetic (EM) waves could be trapped and attenuated by repeated reflection and absorption, yielding outstanding electromagnetic interference (EMI) shielding effectiveness. The total shielding effectiveness (SET) values were significantly determined by the thickness and number of CVI cycles. Consequently, the SET values of the CNTL/SiC reached 33.1–35.7 dB, which means that the EMI shielding effectiveness is excellent. Large-sized carbon nanotube lamella/silicon carbide matrix (CNTL/SiC) composites were fabricated by infiltrating SiC into a lamellar CNT skeleton as a matrix, which avoids the uneven dispersion and high-temperature sintering damage resulting from easily agglomerated CNTs. Due to the highly aligned lamellar structure of the CNTL, the compressive properties of the CNTL/SiC composites were anisotropic and were increased by increasing the number of CVI cycles. The in-plane compressive strengths were higher than the out-of-plane compressive strengths. The flexural strength was as high as 240 ± 5 MPa after 6 CVI cycles. After fracture, the CNTs were pulled-out from matrix, indicating that the CNTs played the main role in bearing load, enhancing the mechanical properties. Since the CNTL/SiC possessed numerous channels, the electromagnetic (EM) waves could be trapped and attenuated by repeated reflection and absorption, yielding outstanding electromagnetic interference (EMI) shielding effectiveness. The total shielding effectiveness (SET) values were significantly determined by the thickness and number of CVI cycles. Consequently, the SET values of the CNTL/SiC reached 33.1–35.7 dB, which means that the EMI shielding effectiveness is excellent. Carbon nanotube/silicon carbide composites Elsevier Chemical vapor infiltration Elsevier Mechanical properties Elsevier Electromagnetic interference shielding effectiveness Elsevier Fan, Yuntian oth Yan, Yuekai oth Han, Daoyang oth Cheng, Laifei oth Enthalten in Elsevier Science Rey, F. ELSEVIER Soil and water bioengineering: Practice and research needs for reconciling natural hazard control and ecological restoration 2018 Amsterdam [u.a.] (DE-627)ELV000899798 volume:46 year:2020 number:16 pages:25008-25016 extent:9 https://doi.org/10.1016/j.ceramint.2020.06.286 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA SSG-OPC-GGO 43.12 Umweltchemie VZ 43.13 Umwelttoxikologie VZ 44.13 Medizinische Ökologie VZ AR 46 2020 16 25008-25016 9 |
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10.1016/j.ceramint.2020.06.286 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001375.pica (DE-627)ELV051549107 (ELSEVIER)S0272-8842(20)31958-1 DE-627 ger DE-627 rakwb eng 333.7 610 VZ 43.12 bkl 43.13 bkl 44.13 bkl Mei, Hui verfasserin aut Three-dimensional CNT lamellae reinforced SiC for enhanced mechanical and electromagnetic shielding properties 2020transfer abstract 9 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Large-sized carbon nanotube lamella/silicon carbide matrix (CNTL/SiC) composites were fabricated by infiltrating SiC into a lamellar CNT skeleton as a matrix, which avoids the uneven dispersion and high-temperature sintering damage resulting from easily agglomerated CNTs. Due to the highly aligned lamellar structure of the CNTL, the compressive properties of the CNTL/SiC composites were anisotropic and were increased by increasing the number of CVI cycles. The in-plane compressive strengths were higher than the out-of-plane compressive strengths. The flexural strength was as high as 240 ± 5 MPa after 6 CVI cycles. After fracture, the CNTs were pulled-out from matrix, indicating that the CNTs played the main role in bearing load, enhancing the mechanical properties. Since the CNTL/SiC possessed numerous channels, the electromagnetic (EM) waves could be trapped and attenuated by repeated reflection and absorption, yielding outstanding electromagnetic interference (EMI) shielding effectiveness. The total shielding effectiveness (SET) values were significantly determined by the thickness and number of CVI cycles. Consequently, the SET values of the CNTL/SiC reached 33.1–35.7 dB, which means that the EMI shielding effectiveness is excellent. Large-sized carbon nanotube lamella/silicon carbide matrix (CNTL/SiC) composites were fabricated by infiltrating SiC into a lamellar CNT skeleton as a matrix, which avoids the uneven dispersion and high-temperature sintering damage resulting from easily agglomerated CNTs. Due to the highly aligned lamellar structure of the CNTL, the compressive properties of the CNTL/SiC composites were anisotropic and were increased by increasing the number of CVI cycles. The in-plane compressive strengths were higher than the out-of-plane compressive strengths. The flexural strength was as high as 240 ± 5 MPa after 6 CVI cycles. After fracture, the CNTs were pulled-out from matrix, indicating that the CNTs played the main role in bearing load, enhancing the mechanical properties. Since the CNTL/SiC possessed numerous channels, the electromagnetic (EM) waves could be trapped and attenuated by repeated reflection and absorption, yielding outstanding electromagnetic interference (EMI) shielding effectiveness. The total shielding effectiveness (SET) values were significantly determined by the thickness and number of CVI cycles. Consequently, the SET values of the CNTL/SiC reached 33.1–35.7 dB, which means that the EMI shielding effectiveness is excellent. Carbon nanotube/silicon carbide composites Elsevier Chemical vapor infiltration Elsevier Mechanical properties Elsevier Electromagnetic interference shielding effectiveness Elsevier Fan, Yuntian oth Yan, Yuekai oth Han, Daoyang oth Cheng, Laifei oth Enthalten in Elsevier Science Rey, F. ELSEVIER Soil and water bioengineering: Practice and research needs for reconciling natural hazard control and ecological restoration 2018 Amsterdam [u.a.] (DE-627)ELV000899798 volume:46 year:2020 number:16 pages:25008-25016 extent:9 https://doi.org/10.1016/j.ceramint.2020.06.286 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA SSG-OPC-GGO 43.12 Umweltchemie VZ 43.13 Umwelttoxikologie VZ 44.13 Medizinische Ökologie VZ AR 46 2020 16 25008-25016 9 |
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Three-dimensional CNT lamellae reinforced SiC for enhanced mechanical and electromagnetic shielding properties |
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Large-sized carbon nanotube lamella/silicon carbide matrix (CNTL/SiC) composites were fabricated by infiltrating SiC into a lamellar CNT skeleton as a matrix, which avoids the uneven dispersion and high-temperature sintering damage resulting from easily agglomerated CNTs. Due to the highly aligned lamellar structure of the CNTL, the compressive properties of the CNTL/SiC composites were anisotropic and were increased by increasing the number of CVI cycles. The in-plane compressive strengths were higher than the out-of-plane compressive strengths. The flexural strength was as high as 240 ± 5 MPa after 6 CVI cycles. After fracture, the CNTs were pulled-out from matrix, indicating that the CNTs played the main role in bearing load, enhancing the mechanical properties. Since the CNTL/SiC possessed numerous channels, the electromagnetic (EM) waves could be trapped and attenuated by repeated reflection and absorption, yielding outstanding electromagnetic interference (EMI) shielding effectiveness. The total shielding effectiveness (SET) values were significantly determined by the thickness and number of CVI cycles. Consequently, the SET values of the CNTL/SiC reached 33.1–35.7 dB, which means that the EMI shielding effectiveness is excellent. |
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Large-sized carbon nanotube lamella/silicon carbide matrix (CNTL/SiC) composites were fabricated by infiltrating SiC into a lamellar CNT skeleton as a matrix, which avoids the uneven dispersion and high-temperature sintering damage resulting from easily agglomerated CNTs. Due to the highly aligned lamellar structure of the CNTL, the compressive properties of the CNTL/SiC composites were anisotropic and were increased by increasing the number of CVI cycles. The in-plane compressive strengths were higher than the out-of-plane compressive strengths. The flexural strength was as high as 240 ± 5 MPa after 6 CVI cycles. After fracture, the CNTs were pulled-out from matrix, indicating that the CNTs played the main role in bearing load, enhancing the mechanical properties. Since the CNTL/SiC possessed numerous channels, the electromagnetic (EM) waves could be trapped and attenuated by repeated reflection and absorption, yielding outstanding electromagnetic interference (EMI) shielding effectiveness. The total shielding effectiveness (SET) values were significantly determined by the thickness and number of CVI cycles. Consequently, the SET values of the CNTL/SiC reached 33.1–35.7 dB, which means that the EMI shielding effectiveness is excellent. |
| abstract_unstemmed |
Large-sized carbon nanotube lamella/silicon carbide matrix (CNTL/SiC) composites were fabricated by infiltrating SiC into a lamellar CNT skeleton as a matrix, which avoids the uneven dispersion and high-temperature sintering damage resulting from easily agglomerated CNTs. Due to the highly aligned lamellar structure of the CNTL, the compressive properties of the CNTL/SiC composites were anisotropic and were increased by increasing the number of CVI cycles. The in-plane compressive strengths were higher than the out-of-plane compressive strengths. The flexural strength was as high as 240 ± 5 MPa after 6 CVI cycles. After fracture, the CNTs were pulled-out from matrix, indicating that the CNTs played the main role in bearing load, enhancing the mechanical properties. Since the CNTL/SiC possessed numerous channels, the electromagnetic (EM) waves could be trapped and attenuated by repeated reflection and absorption, yielding outstanding electromagnetic interference (EMI) shielding effectiveness. The total shielding effectiveness (SET) values were significantly determined by the thickness and number of CVI cycles. Consequently, the SET values of the CNTL/SiC reached 33.1–35.7 dB, which means that the EMI shielding effectiveness is excellent. |
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