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Production and permeability of porous Si3N4 ceramics produced by starch addition

 
: Topateş, G.; Petasch, U.; Adler, J.; Kara, F.; Mandal, H.

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Volltext ()

Journal of Asian Ceramic Societies: JAsCerS 1 (2013), Nr.3, S.257-261
ISSN: 2187-0764
Englisch
Zeitschriftenaufsatz, Elektronische Publikation
Fraunhofer IKTS ()

Abstract
In this study, the possibility of enhancing permeability of porous Si3N4 ceramics was studied by using pore former additive (potato starch; 0–30 vol.%). The open porosity of samples changed between 52 and 66% as the mean pore channel size values ranged from 0.9 to 4 μm. Increasing starch addition provides bimodal distribution of pore size channels by accompanying abrupt increment in non-Darcian permeability. k2 value rised from 8.7 × 10−10 m to 30.1 × 10−10 m.

: http://publica.fraunhofer.de/dokumente/N-481240.html