Functional Gradient Alumina Ceramics with Controlled Porosity

Abstract:

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The work deals with preparation of functional gradient alumina ceramics with controlled porosity by slip casting method of aqueous alumina suspension containing pore-generating agent. The sol-gel transition of AlO(OH) was employed to stabilize pore-generating agent in the suspension. The composite bodies with layers of variable porosity were prepared. Based on dilatometer measurement the admission difference of irreversible dilatation changes #αirr between compounded layers was determined in order to prepare defect free bi-layer bodies. The dependence of physical and mechanical properties of as fired composite bodies on the porosity value was expressed.

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Periodical:

Edited by:

Marc Anglada et al.

Pages:

223-226

DOI:

10.4028/www.scientific.net/KEM.333.223

Citation:

J. Andertová et al., "Functional Gradient Alumina Ceramics with Controlled Porosity", Key Engineering Materials, Vol. 333, pp. 223-226, 2007

Online since:

March 2007

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$35.00

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