Microstructure–permeability relation of porous β-Si3N4 ceramics

Porous β-Si3N4 ceramics with two distinct structures were produced by using two different Si3N4 sources to investigate the relationship between microstructure and permeability. Results showed that regardless of pore amount, size of pore channels, shape-distribution of β-Si3N4 grains are more effecti...

Full description

Saved in:
Bibliographic Details
Published in:Journal of the European Ceramic Society 2013-08, Vol.33 (9), p.1545-1551
Main Authors: Topates, Gülsüm, Mammitzsch, Lars, Petasch, Uwe, Adler, Joerg, Kara, Ferhat, Mandal, Hasan
Format: Article
Language:English
Subjects:
Ceramics
Channels
Grains
Mathematical analysis
Microstructure
Permeability
Porosity
Si3N4
Silicon nitride
Structural applications
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Porous β-Si3N4 ceramics with two distinct structures were produced by using two different Si3N4 sources to investigate the relationship between microstructure and permeability. Results showed that regardless of pore amount, size of pore channels, shape-distribution of β-Si3N4 grains are more effective on permeability of porous Si3N4 ceramics. Higher permeability and lower contribution of inertial forces was obtained by microstructure consists of coarse and equiaxed grains even at lower porosity amount. Calculated Forchheimer number (Fo) and measured the local breadth of a pore also supported the effect of microstructure on permeability.
ISSN:0955-2219
1873-619X
DOI:10.1016/j.jeurceramsoc.2012.12.022