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Ultralight, strong, three-dimensional SiC structures

Chabi, Sakineh, Rocha, Victoria G., Garcı́a-Tuñón, Esther, Ferraro, Claudio, Saiz, Eduardo, Xia, Yongde and Zhu, Yanqiu 2016. Ultralight, strong, three-dimensional SiC structures. ACS Nano 10 (2) , pp. 1871-1876. 10.1021/acsnano.5b05533

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Ultralight and strong three-dimensional (3D) silicon carbide (SiC) structures have been generated by the carbothermal reduction of SiO with a graphene foam (GF). The resulting SiC foams have an average height of 2 mm and density ranging between 9 and 17 mg cm–3. They are the lightest reported SiC structures. They consist of hollow struts made from ultrathin SiC flakes and long 1D SiC nanowires growing from the trusses, edges, and defect sites between layers. AFM results revealed an average flake thickness of 2–3 nm and lateral size of 2 μm. In-situ compression tests in the scanning electron microscope (SEM) show that, compared with most of the existing lightweight foams, the present 3D SiC exhibited superior compression strengths and significant recovery after compression strains of about 70%

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Publisher: American Chemical Society
ISSN: 1936-0851
Date of Acceptance: 18 November 2015
Last Modified: 30 Nov 2020 17:02

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