Application of Sol‐Gel Processing Techniques for the Manufacture of Fiber‐Reinforced Ceramics

Russell-Floyd, R. S.; Harris, B.; Cooke, R.G.; Laurie, J.; Hammett, F.; Jones, R. W.; Wang, Tianhe

doi:10.1111/j.1151-2916.1993.tb03992.x

Cited by 42 publications

(12 citation statements)

References 12 publications

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“…Among synthetic processes which have been developed to elaborate new types of ceramic materials; the Shape Memory Synthesis (SMS), 2,3 the replicating PU foams 4 and others alternatives routes [5][6][7][8][9] have been investigated.…”

Section: Introductionmentioning

confidence: 99%

TiO2 and [TiO2/β-SiC] microtubes prepared from an original process

Gibot

Vix‐Guterl

2007

Journal of the European Ceramic Society

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Section: Introductionmentioning

confidence: 99%

TiO2 and [TiO2/β-SiC] microtubes prepared from an original process

Gibot

Vix‐Guterl

2007

Journal of the European Ceramic Society

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“…In this case even after following thawing and removal of solvent the gels keep their integrity. Due to intensive polymerization of silica chains during freeze gelation this process is used in the freeze casting of complex-shaped silicacontaining ceramics [16][17][18][19][20].…”

Section: Formation and General Features Of The Cryogelsmentioning

confidence: 99%

Inorganic cryogels for energy saving and conversion

Shlyakhtin

2008

J Electroceram

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Cryogels are usually obtained by freezing and thawing or freeze drying of gels and residues. Essential morphological features of the cryogels are bimodal pore size distribution, nanosize of the primary particles (crystallites) and their low agglomeration. Widely used for a decades in the polymer science and technology, cryogels find now a growing number of applications in the electroceramic materials. Freeze casting technique based on the freeze gelation effect is proved to be useful forming method in the production of complex-shaped SiO 2 -containing electroceramics. Directed modification of the micromorphology by using solvent exchange schemes allows to obtain SiO 2 cryogel monoliths with density ≤ 0.05 g cm −3 and specific surface area 700-800 m 2 g −1 suitable for cryogenic thermal insulation of the superconducting devices. Excellent electrocatalytic activity of the macro/mesoporous PtRu/C cryogels in the methanol oxidation reaction makes them perspective anode materials of direct methanol fuel cells. Application of the cryogel-derived starting powders promoted substantial reduction of the sintering temperatures for a number of electroceramic materials. MnO 2 -and V 2 O 5 -based cryogels are efficient cathode materials for secondary lithium batteries with specific capacity up to 300 mAh g −1 .Recent studies demonstrated also a feasibility of cryochemical approaches to the synthesis of complex oxide-based nanocrystalline electrode materials for electrochemical supercapacitors with high specific capacity at current densities up to 50 mA cm −2 .

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“…Hereinto, sol-gel process should be the most appropriate method to fabricate three dimensional (3D) composites due to its effectiveness in relatively low densification temperature (o1300 1C), low shrinkage, reduced drying stresses and near-stoichiometric composition in matrix. Moreover, solgel process is a liquid-phase technique and can be used to prepare large continuous fiber-reinforced products with complex shape [12].…”

Section: Introductionmentioning

confidence: 99%