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Functionalization of open-celled foams by homogeneous slurry based coatings

Published online by Cambridge University Press:  05 June 2013

Daniela Boettge*
Affiliation:
Nonoxide Ceramics, Fraunhofer Institute for Ceramic Technologies and Systems IKTS Dresden, Winterbergstrasse 28, D-01277 Dresden, Germany
Gisela Standke
Affiliation:
Nonoxide Ceramics, Fraunhofer Institute for Ceramic Technologies and Systems IKTS Dresden, Winterbergstrasse 28, D-01277 Dresden, Germany
Alexander Fuessel
Affiliation:
Nonoxide Ceramics, Fraunhofer Institute for Ceramic Technologies and Systems IKTS Dresden, Winterbergstrasse 28, D-01277 Dresden, Germany
Jörg Adler
Affiliation:
Nonoxide Ceramics, Fraunhofer Institute for Ceramic Technologies and Systems IKTS Dresden, Winterbergstrasse 28, D-01277 Dresden, Germany
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

A new technology to coat open-celled foams homogeneously by using a vertical centrifuge and shear-thinning slurries is presented. The technology is exemplified by a complex multilayer-coated foam for catalytic applications (Fig. 3). Furthermore, a new calculation model for the estimation of coating thickness and for quality assessment is introduced and proved by comparing the calculated and experimental data. Based on these results, various material combinations are shown, e.g., layers made of rough particles, zeolites, activated carbon, γ-Al2O3, perovskites, mullite, and yttria–alumina–garnet on SiC–, Al2O3–, or cordierite foams. Theses “functionalized foams” can be used for a wide variety of practical applications, e.g., as adsorbents and catalysts in environmental engineering, as preforms for metal matrix composites, and for special purpose applications that require corrosion and oxidation resistance.

Type
Invited Papers
Copyright
Copyright © Materials Research Society 2013 

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References

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