| Porous Alumina Ceramics Fabricated by Spark Plasma Sintering |
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| 作者姓名： | WANG Kun FU Zheng-yi* PENG Yong WANG Yu-cheng ZHANG Jin-yong ZHANG Qing-jie State Key Lab of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan China |
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| 作者单位： | WANG Kun，FU Zheng-yi*，PENG Yong，WANG Yu-cheng，ZHANG Jin-yong，ZHANG Qing-jie State Key Lab of Advanced Technology for Materials Synthesis and Processing，Wuhan University of Technology，Wuhan，430070，China |
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| 基金项目： | 国家自然科学基金
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教育部资助项目 |
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| 摘 要： | Porous alumina of regular spherical particles was fabricated with the spark plasma sintering (SPS) and then compared to those ob-tained through conventional hot pressing (HP). The effects of the parameters of the heating process on porosity were also investigated. Microstructural studies suggest that porous ingots including regular pores be made out of regular spherical alumina particles due to the close sphere packages. A comparative study on the relative necks of the specimens produced by SPS and HP indicates an enhancement of neck growth with SPS. Contrasting the theoretical values to the experimental results over the relative necks indicates that a proper relationship between the relative necks and the porosity can be established by a sintering model.
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Porous Alumina Ceramics Fabricated by Spark Plasma Sintering |
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| WANG Kun,FU Zheng-yi*,PENG Yong,WANG Yu-cheng,ZHANG Jin-yong,ZHANG Qing-jie State Key Lab of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology,Wuhan,,China.Porous Alumina Ceramics Fabricated by Spark Plasma Sintering[J].Chinese Journal of Aeronautics,2006,19(Z1). |
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| Authors: | WANG Kun FU Zheng-yi PENG Yong WANG Yu-cheng ZHANG Jin-yong ZHANG Qing-jie |
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| Abstract: | Porous alumina of regular spherical particles was fabricated with the spark plasma sintering (SPS) and then compared to those obtained through conventional hot pressing (HP). The effects of the parameters of the heating process on porosity were also investigated. Microstructural studies suggest that porous ingots including regular pores be made out of regular spherical alumina particles due to the close sphere packages. A comparative study on the relative necks of the specimens produced by SPS and HP indicates an enhancement of neck growth with SPS. Contrasting the theoretical values to the experimental results over the relative necks indicates that a proper relationship between the relative necks and the porosity can be established by a sintering model. |
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| Keywords: | spark plasma sintering (SPS) porous alumina ceramics sintering neck |
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