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Synthesis of Porous Silicon Nitride with Unidirectionally Aligned Channels Using Freeze‐Drying Process
Abstract
Porous silicon nitride with macroscopically aligned channels was synthesized using a freeze‐drying process. Freezing of a water‐based slurry of silicon nitride was done while unidirectionally controlling the growth direction of the ice. Pores were generated subsequently by sublimation of the columnar ice during freeze‐drying. By sintering this green body, a porous silicon nitride with high porosity (over 50%) was obtained and its porosity was controllable by the slurry concentration. The porous Si 3 N 4 had a unique microstructure, where macroscopically aligned open pores contained fibrous grains protruding from the internal walls of the Si 3 N 4 matrix. It is hypothesized that vapor/solid phase reactions were important to the formation mechanism of the fibrous grains.
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Citations
Cites
Synthesis of Porous Ceramics with Complex Pore Structure by Freeze‐Dry Processing
Fukasawa, T., Ando, M., Ohji, T., & Kanzaki, S. (2001) · Journal of the American Ceramic Society · doi:10.1111/j.1151-2916.2001.tb00638.x · Cited by 422
Self-citation
Cited by
Freeze‐Casting of Porous Ceramics: A Review of Current Achievements and Issues
Deville, S. (2008) · Advanced Engineering Materials · doi:10.1002/adem.200700270 · Cited by 1,260
Ice-templated porous alumina structures
Deville, S., Saiz, E., & Tomsia, A. P. (2007) · Acta Materialia · doi:10.1016/j.actamat.2006.11.003 · Cited by 769
Aligned Porous Structures by Directional Freezing
Zhang, H., & Cooper, A. I. (2007) · Advanced Materials · doi:10.1002/adma.200700154 · Cited by 379
Biomaterials by freeze casting
Wegst, U. G. K., Schecter, M., Donius, A. E., & Hunger, P. M. (2010) · Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences · doi:10.1098/rsta.2010.0014 · Cited by 375
Freeze casting of porous materials: review of critical factors in microstructure evolution
Li, W. L., Lu, K., & Walz, J. Y. (2012) · International Materials Reviews · doi:10.1179/1743280411y.0000000011 · Cited by 372
Metadata
- Authors
- Fukasawa, T., Deng, Z., Ando, M., Ohji, T., & Kanzaki, S.
- Venue
- Journal of the American Ceramic Society
- Publisher
- Wiley
- Published
- 2002-09
- Volume
- 85
- Issue
- 9
- Pages
- 2151-2155
- ISSN
- 0002-7820 (ISSN-L)
- 1551-2916
- OpenAlex
- W2010649624
- Cited by
- 254
- References
- 1
- FWCI
- 4.78
- Type
- journal article
- Language
- en
- Open access
- closed
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- Fukasawa, T., Deng, Z., Ando, M., Ohji, T., & Kanzaki, S. (2002). Synthesis of Porous Silicon Nitride with Unidirectionally Aligned Channels Using Freeze‐Drying Process. Journal of the American Ceramic Society. https://doi.org/10.1111/j.1151-2916.2002.tb00426.x
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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
