Properties of h-Bn/Si3N4 Composite Ceramics Fabricated by Gel-Casting

Chang Liu; De Chang Jia; Sheng Jin Wang; Wang Cui

doi:10.4028/www.scientific.net/MSF.745-746.517

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HomeMaterials Science ForumMaterials Science Forum Vols. 745-746Properties of h-Bn/Si3N4 Composite Ceramics...

Properties of h-Bn/Si₃N₄ Composite Ceramics Fabricated by Gel-Casting

Abstract:

h-BN/Si₃N₄ composite ceramics were fabricated by gel-casting method and pressureless sintering using Si₃N₄ and h-BN as raw materials. The effect of h-BN on the microstructure and comprehensive properties of h-BN/Si₃N₄ceramic were investigated. The results showed that the introduction of h-BN hindered the densification of h-BN/Si₃N₄ ceramic as well as the transformation of α-Si₃N₄ to β-Si₃N₄. The mechanical properties of Si₃N₄ based ceramics decreased with the increase of h-BN content, while the thermal property, dielectric properties and machinability increased.

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Periodical:

Materials Science Forum (Volumes 745-746)

Pages:

517-522

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.745-746.517

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Online since:

February 2013

Authors:

Chang Liu, De Chang Jia, Sheng Jin Wang, Wang Cui

Keywords:

Dielectric Property, Gel-Casting, h-BN/Si₃N₄ Composite Ceramics, Mechanical Property, Thermal Property

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