The mechanical and dielectric properties of Si₃N₄-based sandwich ceramics

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• 作者：Kai-hui Zuo ; Yu-ping Zeng ; ^{yuping-zeng@mail.sic.ac.cn} ; Dongliang Jiang
• 刊名：Materials and Design
• 出版年：2012
• 期刊代码：56_02613069
• 类别：ms
• 出版时间：March, 2012
• 卷：35
• 期：Complete
• 页码：770-773
• 文件大小：656 K

摘要

Porous Si₃N₄/(Si₃N₄ + BN) sandwich ceramics were fabricated by tape casting and hot pressing. The layer thickness ratio, sintering temperature and sintering pressure affected the fracture strength, dielectric constant and porosity. The Si₃N₄/(Si₃N₄ + BN) sandwich ceramics with the layer thickness ratio of 1.5 sintered at 1450 掳C with 5 MPa has a good comprehensive property of the fracture strength of 54.3 MPa and dielectric constant of 3.48 (at 1 GHz).