Dielectric Properties of Porous Si3N4 Ceramics Prepared by In Situ Cordierite Bonding

Abstract:

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In situ bonding porous silicon nitride (Si3N4) ceramics were fabricated in air using a conventional ceramic process using Si3N4, Al2O3 and MgO as the starting materials. The effects of additives content, sintering temperature and holding time on phase composition, microstructure, dielectric properties and porosity were studied. The porous Si3N4 ceramics were composed of α- Si3N4, SiO2 (cristobalite) and cordierite. Porous Si3N4 ceramics with porosities of 34.12~50.22%, dielectric constant of 2.95~4.45 and dielectric loss of ~0.0025 were obtained.

Info:

Periodical:

Key Engineering Materials (Volumes 434-435)

Edited by:

Wei Pan and Jianghong Gong

Pages:

701-704

DOI:

10.4028/www.scientific.net/KEM.434-435.701

Citation:

Y. F. Xia et al., "Dielectric Properties of Porous Si3N4 Ceramics Prepared by In Situ Cordierite Bonding", Key Engineering Materials, Vols. 434-435, pp. 701-704, 2010

Online since:

March 2010

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$35.00

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