Relationship between the microstructures and Young’s modulus of 3D-networked porous carbon material

Autor:	Yutaro Arai, Ryo Inoue, Yasuo Kogo, Yuka Daigo, E. Kojo
Rok vydání:	2021
Předmět:	Materials science Scanning electron microscope Mechanical Engineering Modulus Young's modulus Glassy carbon Microstructure Focused ion beam symbols.namesake Compressive strength Mechanics of Materials symbols General Materials Science Composite material Porosity
Zdroj:	Journal of Materials Science. 56:10338-10352
ISSN:	1573-4803 0022-2461
Popis:	Herein, we prepared 3D-networked porous carbon materials (TNPCs) (porosity ≈ 70%, average pore size ≈ 10 μm, density ≈ 0.37 g cm–3) composed of glassy carbon via pyrolysis of porous phenolic precursors. A compressive test for TNPCs shows that the Young’s moduli and compressive strength of TNPCs ranged from 0.7 to 1.5 GPa and 11 to 30 MPa, respectively, which increased with increasing pore diameter. Although these moduli could not be accurately predicted using conventional periodic unit cell models, the homogenized Young’s moduli predicted using a 3D image-based model acquired by X-ray computed tomography and focused ion beam scanning electron microscopy were in good agreement with the experimental values. These results indicate that the method can be used to reliably investigate the microstructures and evaluate the Young’s modulus using 3D image-based modeling.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b536bf1a3c2c8e94f98d830e13eb6624 https://doi.org/10.1007/s10853-021-05950-x Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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