Fabrication of Textured Si3N4 Ceramics by Slip Casting in a High Magnetic Field |
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Authors: | Shuqin Li † Kensuke Sassa Shigeo Asai |
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Affiliation: | Department of Materials Processing Engineering, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan |
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Abstract: | Developing the texture of ceramics is one of the effective ways for improving properties. Although the magnetic susceptibility of nonmagnetic materials is very small, there is a possibility to control the crystal orientation using a high magnetic field due to a magnetic anisotropy. In this study, Si3N4 ceramics were manufactured by a slip-casting process under high magnetic field and pressureless sintering. The texture of Si3N4 ceramics was studied using X-ray diffraction and scanning electron micrographs of polished and plasma-etched specimens. It has been found that most of the a,b -axes texture of β-Si3N4 grains aligned to the magnetic field direction. |
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Keywords: | fabrication texture silicon nitride |
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