Anisotropic, biomorphic cellular Si3N4 ceramics with directional well-aligned nanowhisker arrays based on wood-mimetic architectures
Abstract Inspired by the transport behavior of water and ions through the aligned channels in trees, we demonstrate a facile, scalable approach for constructing biomorphic cellular Si3N4 ceramic frameworks with well-aligned nanowhisker arrays on the surface of directionally aligned microchannel alig...
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| Format: | Article |
| Language: | English |
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Tsinghua University Press
2022-03-01
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| Series: | Journal of Advanced Ceramics |
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| Online Access: | https://doi.org/10.1007/s40145-021-0555-1 |
| _version_ | 1797701022733303808 |
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| author | Songsong Xu Xiaonan Zhou Qiang Zhi Junjie Gao Liucheng Hao Zhongqi Shi Bo Wang Jianfeng Yang Kozo Ishizaki |
| author_facet | Songsong Xu Xiaonan Zhou Qiang Zhi Junjie Gao Liucheng Hao Zhongqi Shi Bo Wang Jianfeng Yang Kozo Ishizaki |
| author_sort | Songsong Xu |
| collection | DOAJ |
| description | Abstract Inspired by the transport behavior of water and ions through the aligned channels in trees, we demonstrate a facile, scalable approach for constructing biomorphic cellular Si3N4 ceramic frameworks with well-aligned nanowhisker arrays on the surface of directionally aligned microchannel alignments. Through a facile Y(NO3)3 solution infiltration into wood-derived carbon preforms and subsequent heat treatment, we can faultlessly duplicate the anisotropic wood architectures into free-standing bulk porous Si3N4 ceramics. Firstly, α-Si3N4 microchannels were synthesized on the surface of CB-templates via carbothermal reduction nitridation (CRN). And then, homogeneous distributed Y−Si−O−N liquid phase on the walls of microchannel facilitated the anisotropic β-Si3N4 grain growth to form nanowhisker arrays. The dense aligned microchannels with low-tortuosity enable excellent load carrying capacity and thermal conduction through the entire materials. As a result, the porous Si3N4 ceramics exhibited an outstanding thermal conductivity (TC, k R ≈ 6.26 W·m−1·K−1), a superior flexural strength (σL ≈ 29.4 MPa), and a relative high anisotropic ratio of TC (k R/k L = 4.1). The orientation dependence of the microstructure-property relations may offer a promising perspective for the fabrication of multifunctional ceramics. |
| first_indexed | 2024-03-12T04:29:21Z |
| format | Article |
| id | doaj.art-f36180020c0c43f8bf7438a3be998cba |
| institution | Directory Open Access Journal |
| issn | 2226-4108 2227-8508 |
| language | English |
| last_indexed | 2024-03-12T04:29:21Z |
| publishDate | 2022-03-01 |
| publisher | Tsinghua University Press |
| record_format | Article |
| series | Journal of Advanced Ceramics |
| spelling | doaj.art-f36180020c0c43f8bf7438a3be998cba2023-09-03T10:12:32ZengTsinghua University PressJournal of Advanced Ceramics2226-41082227-85082022-03-0111465666410.1007/s40145-021-0555-1Anisotropic, biomorphic cellular Si3N4 ceramics with directional well-aligned nanowhisker arrays based on wood-mimetic architecturesSongsong Xu0Xiaonan Zhou1Qiang Zhi2Junjie Gao3Liucheng Hao4Zhongqi Shi5Bo Wang6Jianfeng Yang7Kozo Ishizaki8State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong UniversityState Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong UniversityState Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong UniversityState Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong UniversityState Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong UniversityState Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong UniversityState Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong UniversityState Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong UniversityDepartment of Mechanical Engineering, Nagaoka University of TechnologyAbstract Inspired by the transport behavior of water and ions through the aligned channels in trees, we demonstrate a facile, scalable approach for constructing biomorphic cellular Si3N4 ceramic frameworks with well-aligned nanowhisker arrays on the surface of directionally aligned microchannel alignments. Through a facile Y(NO3)3 solution infiltration into wood-derived carbon preforms and subsequent heat treatment, we can faultlessly duplicate the anisotropic wood architectures into free-standing bulk porous Si3N4 ceramics. Firstly, α-Si3N4 microchannels were synthesized on the surface of CB-templates via carbothermal reduction nitridation (CRN). And then, homogeneous distributed Y−Si−O−N liquid phase on the walls of microchannel facilitated the anisotropic β-Si3N4 grain growth to form nanowhisker arrays. The dense aligned microchannels with low-tortuosity enable excellent load carrying capacity and thermal conduction through the entire materials. As a result, the porous Si3N4 ceramics exhibited an outstanding thermal conductivity (TC, k R ≈ 6.26 W·m−1·K−1), a superior flexural strength (σL ≈ 29.4 MPa), and a relative high anisotropic ratio of TC (k R/k L = 4.1). The orientation dependence of the microstructure-property relations may offer a promising perspective for the fabrication of multifunctional ceramics.https://doi.org/10.1007/s40145-021-0555-1silicon nitrideanisotropiccarbothermal reduction nitridation (CRN)woodnanowhisker arrays |
| spellingShingle | Songsong Xu Xiaonan Zhou Qiang Zhi Junjie Gao Liucheng Hao Zhongqi Shi Bo Wang Jianfeng Yang Kozo Ishizaki Anisotropic, biomorphic cellular Si3N4 ceramics with directional well-aligned nanowhisker arrays based on wood-mimetic architectures Journal of Advanced Ceramics silicon nitride anisotropic carbothermal reduction nitridation (CRN) wood nanowhisker arrays |
| title | Anisotropic, biomorphic cellular Si3N4 ceramics with directional well-aligned nanowhisker arrays based on wood-mimetic architectures |
| title_full | Anisotropic, biomorphic cellular Si3N4 ceramics with directional well-aligned nanowhisker arrays based on wood-mimetic architectures |
| title_fullStr | Anisotropic, biomorphic cellular Si3N4 ceramics with directional well-aligned nanowhisker arrays based on wood-mimetic architectures |
| title_full_unstemmed | Anisotropic, biomorphic cellular Si3N4 ceramics with directional well-aligned nanowhisker arrays based on wood-mimetic architectures |
| title_short | Anisotropic, biomorphic cellular Si3N4 ceramics with directional well-aligned nanowhisker arrays based on wood-mimetic architectures |
| title_sort | anisotropic biomorphic cellular si3n4 ceramics with directional well aligned nanowhisker arrays based on wood mimetic architectures |
| topic | silicon nitride anisotropic carbothermal reduction nitridation (CRN) wood nanowhisker arrays |
| url | https://doi.org/10.1007/s40145-021-0555-1 |
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