| Preparation and sintering properties of zirconia-mullite-corundum composites using fly ash and zircon |
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| 作者姓名： | 马北越 厉英 崔绍刚 翟玉春 |
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| 作者单位： | School of Materials and Metallurgy,Northeastern University |
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| 基金项目： | Project（N100302002）supported by the Fundamental Research Funds for the Central Universities,China; Project（20100471467）supported by the China Postdoctoral Science Foundation |
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| 摘 要： | Zirconia-mullite-corundum composites were successfully prepared from fly ash,zircon and alumina powder by a reaction sintering process.The phase and microstructure evolutions of the composite synthesized at desired temperatures of 1 400,1 500 and 1 600°C for 4 h were characterized by X-ray diffractometry and scanning electronic microscopy,respectively.The influences of sintering temperature on shrinkage ratio,apparent porosity and bulk density of the synthesized composite were investigated.The formation process of the composites was discussed in detail.The results show that the zirconia-mullite-corundum composites with good sintering properties can be prepared at 1 600°C for 4 h.Zirconia particles can be homogeneously distributed in mullite matrix,and the zirconia particles are around 5μm.The formation process of zirconia-mullite-corundum composites consists of decomposition of zircon and mullitization process.
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| 关 键 词： | zirconia mullite sintering properties reaction sintering process fly ash zircon |
| 收稿时间： | 13 May 2010 |
Preparation and sintering properties of zirconia-mullite-corundum composites using fly ash and zircon |
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| MA Bei-yue,LI Ying,CUI Shao-gang,ZHAI Yu-chun.Preparation and sintering properties of zirconia-mullite-corundum composites using fly ash and zircon[J].Transactions of Nonferrous Metals Society of China,2010,20(12):2331-2335. |
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| Authors: | MA Bei-yue LI Ying CUI Shao-gang ZHAI Yu-chun |
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| Affiliation: | School of Materials and Metallurgy, Northeastern University, Shenyang 110819, China |
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| Abstract: | Zirconia-mullite-corundum composites were successfully prepared from fly ash, zircon and alumina powder by a reaction sintering process. The phase and microstructure evolutions of the composite synthesized at desired temperatures of 1 400, 1 500 and 1 600 °C for 4 h were characterized by X-ray diffractometry and scanning electronic microscopy, respectively. The influences of sintering temperature on shrinkage ratio, apparent porosity and bulk density of the synthesized composite were investigated. The formation process of the composites was discussed in detail. The results show that the zirconia-mullite-corundum composites with good sintering properties can be prepared at 1 600 °C for 4 h. Zirconia particles can be homogeneously distributed in mullite matrix, and the zirconia particles are around 5 μm. The formation process of zirconia-mullite-corundum composites consists of decomposition of zircon and mullitization process. |
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| Keywords: | zirconia mullite sintering properties reaction sintering process fly ash zircon |
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