Processing, microstructure and elastic properties of mullite-based ceramic foams prepared by direct foaming with wheat flour

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F16%3A43901943" target="_blank" >RIV/60461373:22310/16:43901943 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.jeurceramsoc.2015.09.028" target="_blank" >http://dx.doi.org/10.1016/j.jeurceramsoc.2015.09.028</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jeurceramsoc.2015.09.028" target="_blank" >10.1016/j.jeurceramsoc.2015.09.028</a>

Result language
angličtina
Original language name
Processing, microstructure and elastic properties of mullite-based ceramic foams prepared by direct foaming with wheat flour
Original language description
Mullite-based ceramic foams with bulk densities as low as 0.4 g/cm3, porosities between 49 and 88 % and average foam cell sizes in the range 100-320 ?m are fabricated by direct foaming from suspensions containing wheat flour and partial sintering at 1600 oC. Stereology-based image analysis is used to determine a complete set of global microstructural descriptors, i.e. the porosity from foam cells (8-88 %), interface density, mean curvature integral density and the related pore size measures (mean chord length and Jeffries size). Elastic constants are determined via impulse excitation (Young's moduli 2.3-21.4 GPa, shear moduli 0.9-8.8 GPa, bulk moduli 1.5-12.9 GPa, Poisson ratios 0.193-0.234). Elastic moduli obey the power-law prediction (Gibson-Ashby relation for open-cell foams) for foams with porosities higher than 70 %, but for lower porosities they are significantly lower, due to concave pores in the partially sintered matrix.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
JH - Ceramics, fire-proof materials and glass
OECD FORD branch
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Project
<a href="/en/project/GA15-18513S" target="_blank" >GA15-18513S: Processing and characterization of oxide and silicate ceramics with controlled microstructure and modeling of microstructure-property relations</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

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