Article ID Journal Published Year Pages File Type
1475579 Journal of the European Ceramic Society 2013 7 Pages PDF
Abstract

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.

Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
Authors
, , , , , ,