Porous SiC ceramic obtained by spark plasma sintering of preceramic paper: Microstructure, mechanical properties and gas permeability
Sedanova EP, Kashkarov EB, Lider AM, Travitzky N (2024)
Publication Type: Journal article
Publication year: 2024
Journal
DOI: 10.1016/j.ceramint.2024.01.203
Abstract
This paper describes the fabrication and characterization of porous SiC ceramics derived from highly-filled preceramic papers. The SiC ceramics were obtained by spark plasma sintering of stacked preceramic papers at temperatures of 2100 and 2200 °C under pressures of 5–60 MPa for 10 min. The microstructure and phase composition were analyzed by scanning electron microscopy and X-ray diffraction, respectively. Gas permeation tests were performed using hydrogen permeation cell at room temperature. It is revealed that the porosity of sintered SiC can be varied from 9 to 45 % depending on the sintering parameters. The shrinkage of the materials during spark plasma sintering occurs in four stages. The linear shrinkage value of the material increases from 7 to 47 % at 2100 °C and from 20 to 50 % for the samples sintered at 2100 and 2200 °C, respectively. Correlation dependencies between porosity and mechanical properties of the fabricated SiC were established. The obtained porous SiC ceramics exhibit high bending strength of 165 MPa and gas permeation flux of 78 molH
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Russian Federation (RU)How to cite
APA:
Sedanova, E.P., Kashkarov, E.B., Lider, A.M., & Travitzky, N. (2024). Porous SiC ceramic obtained by spark plasma sintering of preceramic paper: Microstructure, mechanical properties and gas permeability. Ceramics International. https://doi.org/10.1016/j.ceramint.2024.01.203
MLA:
Sedanova, E. P., et al. "Porous SiC ceramic obtained by spark plasma sintering of preceramic paper: Microstructure, mechanical properties and gas permeability." Ceramics International (2024).
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