Achieving high-strength, hierarchically porous SiC ceramics with micron-scale periodic architecture via vat photopolymerization
Porous silicon carbide (SiC) ceramics are extensively utilised in a wide array of industrial applications. However, achieving a high porosity in SiC ceramic while balancing high strength remains a significant challenge. Here, high strength, hierarchically porous SiC ceramics with micron-scale period...
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Taylor & Francis Group
2025-12-01
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| Series: | Virtual and Physical Prototyping |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/17452759.2025.2517362 |
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| author | Keqiang Zhang Zijian Zhang Wanyu Li Xuefei Zhang Yingjie Feng Chunlei Wan |
| author_facet | Keqiang Zhang Zijian Zhang Wanyu Li Xuefei Zhang Yingjie Feng Chunlei Wan |
| author_sort | Keqiang Zhang |
| collection | DOAJ |
| description | Porous silicon carbide (SiC) ceramics are extensively utilised in a wide array of industrial applications. However, achieving a high porosity in SiC ceramic while balancing high strength remains a significant challenge. Here, high strength, hierarchically porous SiC ceramics with micron-scale periodic architectures are fabricated through a combination of vat photopolymerization additive manufacturing and pressureless sintering. The SiC powder is subjected to oxidation to enhance the curing depth of the SiC photosensitive slurry. Two strategies, including the reduction of the spacing between particles and the increase of SiC powder sintering activity, are employed to improve the strength of micro porous SiC ceramics without significantly decreasing its porosity. Sintering activity doses are realised at the SiC particle interfaces, which facilitates grain migration and diffusion and, eventually, generates both a high flexural strength of 122.38 ± 3.87 MPa and a high porosity of 41.57 ± 0.41%. Hierarchically porous SiC ceramic structures with micron-scale periodic architectures and a wall thickness of 50μm, a high open porosity surpassing 83% and a compression strength of 5.62 ± 0.31 MPa were also yielded. This work achieves the desired balance between mechanical strength and porosity and offers a novel pathway for the production of high-performance porous ceramics. |
| format | Article |
| id | doaj-art-66440c9b80cd47f88899d34ccabbf7fd |
| institution | Kabale University |
| issn | 1745-2759 1745-2767 |
| language | English |
| publishDate | 2025-12-01 |
| publisher | Taylor & Francis Group |
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| series | Virtual and Physical Prototyping |
| spelling | doaj-art-66440c9b80cd47f88899d34ccabbf7fd2025-08-20T03:32:03ZengTaylor & Francis GroupVirtual and Physical Prototyping1745-27591745-27672025-12-0120110.1080/17452759.2025.2517362Achieving high-strength, hierarchically porous SiC ceramics with micron-scale periodic architecture via vat photopolymerizationKeqiang Zhang0Zijian Zhang1Wanyu Li2Xuefei Zhang3Yingjie Feng4Chunlei Wan5State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, People’s Republic of ChinaState Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, People’s Republic of ChinaState Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, People’s Republic of ChinaState Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, People’s Republic of ChinaState Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, People’s Republic of ChinaState Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, People’s Republic of ChinaPorous silicon carbide (SiC) ceramics are extensively utilised in a wide array of industrial applications. However, achieving a high porosity in SiC ceramic while balancing high strength remains a significant challenge. Here, high strength, hierarchically porous SiC ceramics with micron-scale periodic architectures are fabricated through a combination of vat photopolymerization additive manufacturing and pressureless sintering. The SiC powder is subjected to oxidation to enhance the curing depth of the SiC photosensitive slurry. Two strategies, including the reduction of the spacing between particles and the increase of SiC powder sintering activity, are employed to improve the strength of micro porous SiC ceramics without significantly decreasing its porosity. Sintering activity doses are realised at the SiC particle interfaces, which facilitates grain migration and diffusion and, eventually, generates both a high flexural strength of 122.38 ± 3.87 MPa and a high porosity of 41.57 ± 0.41%. Hierarchically porous SiC ceramic structures with micron-scale periodic architectures and a wall thickness of 50μm, a high open porosity surpassing 83% and a compression strength of 5.62 ± 0.31 MPa were also yielded. This work achieves the desired balance between mechanical strength and porosity and offers a novel pathway for the production of high-performance porous ceramics.https://www.tandfonline.com/doi/10.1080/17452759.2025.2517362High strengthhierarchically poroussiC ceramicvat photopolymerisation |
| spellingShingle | Keqiang Zhang Zijian Zhang Wanyu Li Xuefei Zhang Yingjie Feng Chunlei Wan Achieving high-strength, hierarchically porous SiC ceramics with micron-scale periodic architecture via vat photopolymerization Virtual and Physical Prototyping High strength hierarchically porous siC ceramic vat photopolymerisation |
| title | Achieving high-strength, hierarchically porous SiC ceramics with micron-scale periodic architecture via vat photopolymerization |
| title_full | Achieving high-strength, hierarchically porous SiC ceramics with micron-scale periodic architecture via vat photopolymerization |
| title_fullStr | Achieving high-strength, hierarchically porous SiC ceramics with micron-scale periodic architecture via vat photopolymerization |
| title_full_unstemmed | Achieving high-strength, hierarchically porous SiC ceramics with micron-scale periodic architecture via vat photopolymerization |
| title_short | Achieving high-strength, hierarchically porous SiC ceramics with micron-scale periodic architecture via vat photopolymerization |
| title_sort | achieving high strength hierarchically porous sic ceramics with micron scale periodic architecture via vat photopolymerization |
| topic | High strength hierarchically porous siC ceramic vat photopolymerisation |
| url | https://www.tandfonline.com/doi/10.1080/17452759.2025.2517362 |
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