Permeability evaluation of porous calcium-stabilized ZrO2 composites

YESICA BRUNI; LILIANA GARRIDO; ESTEBAN AGLIETTI

Tokyo

Simposio; The 50 th anniversary symposium on basic science of ceramics; 2012

The Ceramic Society of Japan

Abstract: Porous ZrO2 ceramics are widely used for filtration/separation processes due to the good chemical and thermal stability. For these applications is desirable that the material have a controlled porous structure in order to obtain good permeability. In this study Ca stabilized ZrO2 composites were developed from a starting mixture of pure ZrO2 containing different mole proportions of calcium aluminate cement and sintered at 1300-1450 °C. The permeability of these composites was evaluated using the Forchheimer's equation. On the other hand, a theoretical permeability was estimated from porous structure parameters following the well known Ergun?s equation. The influence of sintering temperature on textural properties and permeability was examined.Porous ZrO2 ceramics are widely used for filtration/separation processes due to the good chemical and thermal stability. For these applications is desirable that the material have a controlled porous structure in order to obtain good permeability. In this study Ca stabilized ZrO2 composites were developed from a starting mixture of pure ZrO2 containing different mole proportions of calcium aluminate cement and sintered at 1300-1450 °C. The permeability of these composites was evaluated using the Forchheimer's equation. On the other hand, a theoretical permeability was estimated from porous structure parameters following the well known Ergun?s equation. The influence of sintering temperature on textural properties and permeability was examined.2 composites were developed from a starting mixture of pure ZrO2 containing different mole proportions of calcium aluminate cement and sintered at 1300-1450 °C. The permeability of these composites was evaluated using the Forchheimer's equation. On the other hand, a theoretical permeability was estimated from porous structure parameters following the well known Ergun?s equation. The influence of sintering temperature on textural properties and permeability was examined.