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| Effect of Sintering Conditions on Texture Formation of Si3N4 Ceramic Shaped up in a Strong Magnetic Field |
Zhigang YANG1,Jianbo YU1,Chuanjun LI1,Kang DENG1,Zhongming REN1,**( ),Yunbo ZHONG1,Qiuliang WANG2,Yinming DAI2,Hui WANG2 |
1. Shanghai Key Laboratory of Modern Metallurgy and Materials Processing, Shanghai University,
Shanghai 200072, China
2. Institute of Electrical Engineering, Chinese Academy of Science, Beijing 100190, China |
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Cite this article:
Zhigang YANG,Jianbo YU,Chuanjun LI,Kang DENG,Zhongming REN,Yunbo ZHONG,Qiuliang WANG,Yinming DAI,Hui WANG. Effect of Sintering Conditions on Texture Formation of Si3N4 Ceramic Shaped up in a Strong Magnetic Field. Chinese Journal of Materials Research, 2015, 29(5): 371-376.
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Abstract Si3N4 ceramics with preferential texture along a or b axis were shaped up by gel-casting in a magnetic field of 6T and then pressureless sintered. Effect of the sintering temperature and time on the texture formation of the Si3N4 ceramics was investigated. It was found that the phase transformation of α to β was completed for the Si3N4 ceramics prepared by the present process. With the increasing sintering temperature the texture formation of Si3N4 ceramics may be enhanced, i.e. of which the degree of texture increased from 0.40 at 1700℃ to 0.76 at 1800℃. The extension of sintering time at 1750℃ had few effect on texture development of Si3N4 ceramics.
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Received: 25 July 2014
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| Fund: *Supported by National Natural Science Foundation of China Nos. 50902140＆50872142/E0207. |
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