Preparation of porous silicon nitride ceramics by freeze drying | Zendy

Chun-fang Xiao | Zendy; Bing Han | Zendy

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Preparation of porous silicon nitride ceramics by freeze drying

Author(s) -

Chun-fang Xiao,

Bing Han

Publication year - 2019

Publication title -

journal of materials research and technology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.832

H-Index - 44

eISSN - 2214-0697

pISSN - 2238-7854

DOI - 10.1016/j.jmrt.2019.10.014

Subject(s) - materials science , silicon nitride , dielectric , ceramic , porous silicon , porosity , slurry , nitride , porous medium , composite material , silicon , thermal stability , dielectric loss , chemical engineering , optoelectronics , layer (electronics) , engineering

Silicon nitride ceramics have excellent mechanical properties, good thermal and chemical stability, low dielectric constant and dielectric loss. It is an ideal choice for high-speed aircraft electromagnetic wave transmission materials. In this paper, the preparation methods of porous silicon nitride materials with controllable dielectric constant and pore structure were systematically studied. Porous silicon nitride materials with controllable pore structure and directional growth were prepared by freeze-drying process and adjusting the solid content of slurry.

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