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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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Fulltext ()

Journal of Asian Ceramic Societies: JAsCerS 1 (2013), No.3, pp.257-261
ISSN: 2187-0764
English
Journal Article, Electronic Publication
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/documents/N-481240.html