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Scaling Analysis of the Effect of Binder Content and Binder Distribution on the Gas Permeability of Porous Green Ceramics
Author(s) -
Yun Jeong Woo,
Lombardo Stephen J.
Publication year - 2008
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2008.02459.x
Subject(s) - materials science , ceramic , volume fraction , porosity , composite material , permeability (electromagnetism) , scaling , particle size , particle size distribution , volume (thermodynamics) , mineralogy , chemical engineering , chemistry , thermodynamics , geometry , membrane , biochemistry , mathematics , physics , engineering
Two models have been developed to describe how variations in binder content and binder distribution influence the specific surface and the gas permeability of porous media. In the Core‐Shell model, a shell of binder surrounds each ceramic particle, and the specific surface increases with decreasing volume fraction of binder. In the Multi‐Sphere model, binder particles occupy the interstices between the ceramic particles, and the specific surface generally decreases with decreasing volume fraction of binder. The variation in the permeability with binder content predicted by each model is different as compared with the case of a constant specific surface.