| Al-Ti-TiO2体系燃烧合成及其反应过程研究 |
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| 引用本文： | 李志强,曲伟,韩杰才,赫晓东. Al-Ti-TiO2体系燃烧合成及其反应过程研究[J]. 无机材料学报, 2002, 17(2): 293-298 |
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| 作者姓名： | 李志强 曲伟 韩杰才 赫晓东 |
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| 作者单位： | 哈尔滨工业大学复合材料研究所，哈尔滨150001 |
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| 基金项目： | 哈尔滨工业大学校基金（HIT200041） |
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| 摘 要： | 利用Al-Ti-TiO2体系放热反应，采用自蔓延高温合成工艺，原位合成了TiAl基体和Al2O3颗粒，成功制备出TiAl/Al2O3复合材料。结合差热分析，通过对不同温度下反应产物相组成分析，对Al-Ti-TiO2体系燃烧反应过程进行了初步研究。结果表明，铝热还原反应是一个分步过程，先期发生的Al-Ti,Ti-TiO2反应降低了Al-TiO2还原反应的起始温度。
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| 关 键 词： | 自蔓延高温合成 Al－Ti－TiO2体系 复合材料 |
| 文章编号： | 1000-324X(2002)02-0293-06 |
| 收稿时间： | 2001-03-16 |
| 修稿时间： | 2001-03-16 |
Investigation on Combustion Synthesis and Reaction Process of Al-Ti-TiO2 System |
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| LI Zhi-Qiang,QU Wei,HAN Jie-Cai,HE Xiao-Dong. Investigation on Combustion Synthesis and Reaction Process of Al-Ti-TiO2 System[J]. Journal of Inorganic Materials, 2002, 17(2): 293-298 |
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| Authors: | LI Zhi-Qiang QU Wei HAN Jie-Cai HE Xiao-Dong |
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| Affiliation: | CenterforCompositeMaterials;HarbinInstituteofTechnology;Harbin150001;China |
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| Abstract: | TiAl base composites reinforced by submicron Al2O3 particles were produced by Self-propagating High-temperature Synthesis (SHS) in use of the exothermic reaction of Al-Ti-TiO2 system. The reaction process was investigated with phase analysis of DTA samples quenched at different temperatures. The results indicate that the thermite reduction of TiO2 involves several transitional stages and its initiatory temperature is lowered by prior reactions between Al and Ti, Ti and TiO2. |
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| Keywords: | SHS Al-Ti-TiO2 system composites |
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