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Effect of removal of silicon on preparation of porous SiC ceramics following reaction bonding and recrystallization

Liu, Rongzhen ; Liu, Guiwu ; Yang, Jianfeng ; Jin, Haiyun ; Lu, Yuan ; Gu, Wenwei

Materials science & engineering. A, Structural materials : properties, microstructure and processing, 2012-08, Vol.552, p.9-14 [Periódico revisado por pares]

Kidlington: Elsevier B.V

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Título:
Effect of removal of silicon on preparation of porous SiC ceramics following reaction bonding and recrystallization
Autor: Liu, Rongzhen ; Liu, Guiwu ; Yang, Jianfeng ; Jin, Haiyun ; Lu, Yuan ; Gu, Wenwei
Assuntos: Ceramics ; Cross-disciplinary physics: materials science; rheology ; Exact sciences and technology ; Grain growth ; Materials science ; Microstructure ; Other materials ; Physics ; Porosity ; Porous silicon carbide ; Recrystallization ; Silicon ; Silicon carbide ; Sintering ; Specific materials
É parte de: Materials science & engineering. A, Structural materials : properties, microstructure and processing, 2012-08, Vol.552, p.9-14
Notas: ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
Descrição: Porous α-SiC ceramics with distributed pore structure were prepared by recrystallization method using silicon as the template. The microstructure evolution of this material (sintered at 2100°C) was investigated by varying particle size of the silicon powders (3.5μm and 37μm). The results demonstrated that finer silicon powder could strengthen grain growth along close-packed directions and made the material easily to form plate-like SiC crystals. Pore diameter was mainly controlled by silicon raw powder when the silicon had a greater median diameter value than the SiC powder. In this study, grain growth was determined by a mixed mechanism during silicon removing. The porosity increased with the increasing of silicon contents while the strength was in a reverse proportional relationship. High porosity ceramics with relative high strength, which were sintered at 2100°C for 15min, were obtained using 3.5μm silicon powder as the template.
Editor: Kidlington: Elsevier B.V
Idioma: Inglês

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Effect of removal of silicon on preparation of porous SiC ceramics following reaction bonding and recrystallization

Liu, Rongzhen ; Liu, Guiwu ; Yang, Jianfeng ; Jin, Haiyun ; Lu, Yuan ; Gu, Wenwei

Kidlington: Elsevier B.V

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