| ZrSiO4/Al2O3/SiO2混合粉体的反应烧结研究 |
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| 引用本文： | 赵世柯,赵建东,肖东梅,康金生.ZrSiO4/Al2O3/SiO2混合粉体的反应烧结研究[J].真空电子技术,2005(4):34-36,47. |
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| 作者姓名： | 赵世柯 赵建东 肖东梅 康金生 |
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| 作者单位： | 中国科学院电子学研究所,微波器件与技术研究发展中心,北京,100080 |
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| 摘 要： | 以ZrSiO4/Al2O3/SiO2混合粉体为原料,采用反应烧结工艺,通过添加SiO2与"过量"的Al2O3反应,制备了"富"莫来石的ZrO2/莫来石复相陶瓷材料.添加的无定形SiO2在烧结过程中结晶形成中间产物方石英.方石英的形成和莫来石化反应是阻碍致密化的主要因素.结果表明,该体系的反应烧结坯体的致密化是困难的,抑制SiO2晶化,减小莫来石化体积膨胀带来的不利影响是获得致密烧结体的关键.
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| 关 键 词： | 反应烧结 莫来石 氧化锆 复合材料 |
| 文章编号： | 1002-8935(2005)04-0034-03 |
Reaction-Sintering of ZrSiO4/Al2O3/SiO2 Mixed Powders |
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| ZHAO Shi-Ke,Zhao Jian-dong,XIAO Dong-mei,KANG Jin-sheng.Reaction-Sintering of ZrSiO4/Al2O3/SiO2 Mixed Powders[J].Vacuum Electronics,2005(4):34-36,47. |
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| Authors: | ZHAO Shi-Ke Zhao Jian-dong XIAO Dong-mei KANG Jin-sheng |
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| Abstract: | "Mullite-rich" mullite-zirconia ceramic composites have been prepared from reaction sintering of ZrSiO_4/Al_2O_3/SiO_2 mixed powders. The reaction sintering was investigated with respect to the densification and phase development. It has been shown that the added amorphous SiO_2 crystallized to cristobalite during reaction sintering. The crystallization, together with mullization, is considered as main reasons for preventing densification. Advanced techniques must be developed to obtain dense compacts. |
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| Keywords: | Reaction sintering Mullite Zirconia Composites |
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