• Journal of Inorganic Materials
  • Vol. 36, Issue 5, 547 (2021)
Quan ZHU1,2,3, Jianbao HU1,2,*, Jinshan YANG1,2, Haijun ZHOU1,2, and Shaoming DONG1,2
Author Affiliations
  • 11. State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
  • 22. Structural Ceramics and Composites Engineering Research Center, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
  • 33. University of Chinese Academy of Sciences, Beijing 100049, China
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    DOI: 10.15541/jim20200265 Cite this Article
    Quan ZHU, Jianbao HU, Jinshan YANG, Haijun ZHOU, Shaoming DONG. Strong SiC Porous Ceramic Obtained by Sintering of Reticulated Aligned SiC Nanowires[J]. Journal of Inorganic Materials, 2021, 36(5): 547 Copy Citation Text show less

    Abstract

    High strength SiC porous ceramic with reticular pore structure is assembled by cross-lamination of layers comprised by aligned SiC nanowire (SiCNWs) struts printed through direct ink writing. SiCNWs networks exhibit a structure with highly interconnected porosity and an architecture formed by aligned SiCNWs struts. The effects of sintering temperature on the structures, phase evolutions and mechanical properties were studied. The high aspect ratio of SiCNWs was kept well at sintering temperature lower than 1900 ℃. The bulk density, porosity and median pore diameter of aligned SiCNWs porous ceramics sintered at 1850 ℃ were 1.49 g/cm3, 54.6% and ~1 μm, respectively. Due to the effect of orientation and high strength of SiC nanowire struts, compressive strength of (245.5±0.7) MPa is achieved.
    $\frac{\sigma}{\sigma_{\mathrm{fs}}}\approx 0.2\left(\frac{\rho^{*}}{\rho_{0}}\right)^{3/2}$

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    Quan ZHU, Jianbao HU, Jinshan YANG, Haijun ZHOU, Shaoming DONG. Strong SiC Porous Ceramic Obtained by Sintering of Reticulated Aligned SiC Nanowires[J]. Journal of Inorganic Materials, 2021, 36(5): 547
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