Direct foaming techniques for the preparation of cellular ceramics, their microstructural characterization and property-porosity relations - a review

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F16%3A43901960" target="_blank" >RIV/60461373:22310/16:43901960 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Direct foaming techniques for the preparation of cellular ceramics, their microstructural characterization and property-porosity relations - a review

Original language description

Highly porous ceramics, typically containing more than 70 % porosity, are called ceramic foams or cellular ceramics. Although the early beginnings of cellular ceramics can be traced back for more than five decades (early 1960s), the applications of porous and cellular ceramics have seen an unprecedented growth during the last two or three decades (from the late 1980s and the early 1990s), resulting in an immense increase of research efforts and papers in the field. Among the many preparation techniques for cellular ceramics direct foaming techniques play a prominent role today, because they offer viable routes for avoiding the problem of hollow struts and low strength, which is the main issues for cellular ceramics prepared by polymer foam replication techniques. This paper reviews direct foaming techniques used for the preparation of cellular ceramics. Based on our distinction of "in-situ" and "ex-situ" direct foaming techniques, an structured shortcut through the current literature is given, with a focus on the most recent advances in both processing variants, including our recently developed techniques of foaming using wheat flour and biological foaming with yeast, for which latest achievements are discussed. Apart from the processing techniques, which are reviewed in some detail, the most important issues concerning the microstructural characterization and property-porosity relations of cellular ceramics are summarized and discussed with respect to cellular ceramics. The chapter closes with a critical discussion of Gibson-Ashby relations for the elastic properties, thermal conductivity and mechanical strength of cellular ceramics (open- and closed-cell foams), with a special focus on experimental compressive strength data reported in the literature.

Czech name

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Czech description

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Type

C - Chapter in a specialist book

CEP classification

JH - Ceramics, fire-proof materials and glass

OECD FORD branch

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Project

<a href="/en/project/GAP108%2F12%2F1170" target="_blank" >GAP108/12/1170: Porous Ceramics with Tailored Elasticity and Thermal Conductivity</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Book/collection name

Advances in Porous Ceramics

ISBN

978-1-63485-839-7

Number of pages of the result

32

Pages from-to

127-158

Number of pages of the book

188

Publisher name

Nova Science Publishers

Place of publication

New York

UT code for WoS chapter

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