| A0／TiO2摩尔比对热扩散反应合成的影响 |
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| 引用本文： | 朱和国,朱和国,王恒志,吴申庆. A0／TiO2摩尔比对热扩散反应合成的影响[J]. 铸造, 2000, 49(12) |
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| 作者姓名： | 朱和国 朱和国 王恒志 吴申庆 |
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| 作者单位： | 1. 东南大学材料系，江苏 南京 210096
2. 南京理工大学，江苏 南京 210094 |
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| 摘 要： | 本文提出了Al TiO2 系XD合成Al3Ti Al2 O3/Al自生复合材料的微观反应模型 ,分析了不同的Al/TiO2 摩尔比对燃烧过程的影响。原位生成的Al2 O3呈等轴颗粒状 ,尺寸达亚微米级 ;Al3Ti的生成受扩散控制 ,呈棒状 ;随着Al/TiO2 摩尔比的增加 ,燃烧温度降低 ,燃烧时间和体密度增加。
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| 关 键 词： | 自生复合材料 铝基复合材料 热扩散 铝 二氧化钛 摩尔比 燃烧温度 |
Influence of Al/TiO2 Mole Ratio on XD Synthesis of Al-TiO2 System |
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| ZHU He-guo,ZHU He-guo,WANG Heng-zhi,WU Shen-qing. Influence of Al/TiO2 Mole Ratio on XD Synthesis of Al-TiO2 System[J]. China Foundry, 2000, 49(12) |
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| Authors: | ZHU He-guo ZHU He-guo WANG Heng-zhi WU Shen-qing |
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| Abstract: | Micro reactive model and reacted mechanism of Al TiO 2 system synthesized by XD method were reported.The influence of Al/TiO 2 mole ratio on combustion was also been discussed.The Al 2O 3 particles which were In situ grown were of equiaxed shape and submicron size.The Al 3Ti was formed by diffuse mechanism and of blocky morphology.The various Al/TiO 2 mole ratios had effect on reaction proceeding.The combustion temperature would be decreased but combusted time and bulk shrinkage would be increased with growth of Al/TiO 2 mole ratio. |
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| Keywords: | in situ composites aluminum matrix composites thermal dispersion Al TiO 2 mole ratio combustion temperature |
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