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Preparation of textured porous Al 2 O 3 ceramics by slip casting in a strong magnetic field and its mechanical properties
Author(s) -
Yang Zhigang,
Yu Jianbo,
Li Chuanjun,
Zhong Yunbo,
Xuan Weidong,
Ren Zhongming,
Wang Qiuliang,
Dai Yinming,
Wang Hui
Publication year - 2015
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.201500080
Subject(s) - materials science , porosity , sintering , slip (aerodynamics) , microstructure , anisotropy , ceramic , composite material , green body , shrinkage , optics , thermodynamics , physics
The textured porous Al 2 O 3 ceramics were prepared by slip casting in a strong magnetic field of 6 T and subsequently sintering. The c axis of Al 2 O 3 grain was oriented parallel to the direction of the magnetic field and the textured porous microstructure with plate‐shape grains was formed. The porosity of textured porous Al 2 O 3 ceramic was 30.37% and the relative density reached 66.29% when the sintering temperature is 1600°C. The textured porous Al 2 O 3 green body showed the linear shrinkage anisotropy. The bending strength of the textured porous Al 2 O 3 ceramics depended on the alignment direction of plate‐shape grains.