Replication of jute stem for porous cellular ceramics/composites in the SiO2–SiC–C System

Ghosh, Soumya; Mandal, Pijush Kanti; Majumdar, Ritajit

doi:10.1016/j.ceramint.2010.04.003

Cited by 4 publications

(2 citation statements)

References 14 publications

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“…Another process for the preparation of biomorphic SiC [6][7][8] is the impregnation of a carbon template with SiO 2 sol, which allows one to produce a SiO 2 layer of desired thickness on the surface of the template. The template is then subjected to high temperature heat treatment, which leads to the formation of SiC through the carbothermic reaction (2) Carbon templates can be silicided as well by other processes, with the use of more "exotic" silicon precur sors.…”

Section: Introductionmentioning

confidence: 99%

Preparation of biomorphic SiC

2013

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Section: Introductionmentioning

confidence: 99%

Preparation of biomorphic SiC

2013

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“…In the case of route II, the infiltration was performed using a solution at near-ambient temperatures, followed by drying and annealing at high temperatures to obtain unidirectional porous ceramics. Porous hydroxyapatite [39] as well as SiO 2 /SiC/C [40], SiC/C [41], TiC/C [41] and ZrC/C composites [41] have been prepared in this way. In route III, infiltration is performed using hot gaseous ceramic precursors, whereas route IV involves infiltration with the molten compound.…”

Section: Templatingmentioning

confidence: 99%

Porous ceramics mimicking nature—preparation and properties of microstructures with unidirectionally oriented pores

Okada

Isobe

Katsumata

et al. 2011

Science and Technology of Advanced Materials

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Porous ceramics with unidirectionally oriented pores have been prepared by various methods such as anodic oxidation, templating using wood, unidirectional solidification, extrusion, etc. The templating method directly replicates the porous microstructure of wood to prepare porous ceramics, whereas the extrusion method mimics the microstructures of tracheids and xylems in trees. These two methods are therefore the main focus of this review as they provide good examples of the preparation of functional porous ceramics with properties replicating nature. The well-oriented cylindrical through-hole pores prepared by the extrusion method using fibers as the pore formers provide excellent permeability together with high mechanical strength. Examples of applications of these porous ceramics are given, including their excellent capillary lift of over 1 m height which could be used to counteract urban heat island phenomena, and other interesting properties arising from anisotropic unidirectional porous structures.

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