| Ti-Al_2O_3金属陶瓷热爆合成的动力学 |
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| 引用本文： | 董倩,蒋明学,蔡雁兵,唐清,李文超.Ti-Al_2O_3金属陶瓷热爆合成的动力学[J].中国有色金属学报,2000(Z1). |
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| 作者姓名： | 董倩 蒋明学 蔡雁兵 唐清 李文超 |
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| 作者单位： | 北京科技大学物理化学系!北京100083(董倩，李文超)，西安建筑科技大学材料科学与工程系!西安710054(蒋明学，蔡雁兵)，中国科学院化工冶金研究所!北京100080(唐清) |
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| 基金项目： | 国家自然科学基金!资助项目 ( 59774 0 1 9) |
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| 摘 要： | 研究了不同动力学工艺参数对热爆合成Ti Al2 O3金属陶瓷过程和热爆产物显微结构的影响。结果表明 :升温速率越快 ,起爆温度越低 ,热爆产物显微形貌中晶粒生长得越不均匀 ;预热温度越高 ,热爆产物显微形貌中晶粒越小 ;原料粒度越小 ,起爆温度越低 ,热爆产物显微形貌中晶粒越小 ;并计算出该体系的表观活化能E为 585.6kJ/mol。
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| 关 键 词： | 热爆合成 金属陶瓷 Ti-Al_2O_3 |
Kinetics of thermal explosion synthesis of Ti-Al_2O_3 cermet |
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| DONG Qian,JIANG Ming-xue,CAI Yan-bing,TANG Qing,LI Wen-chao.Kinetics of thermal explosion synthesis of Ti-Al_2O_3 cermet[J].The Chinese Journal of Nonferrous Metals,2000(Z1). |
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| Authors: | DONG Qian JIANG Ming-xue CAI Yan-bing TANG Qing LI Wen-chao |
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| Affiliation: | DONG Qian~1,JIANG Ming-xue~2,CAI Yan-bing~2,TANG Qing~3,LI Wen-chao~1 |
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| Abstract: | The effect of processing variables on reaction process and the microstructure of cermet product were investigated for thermal explosion synthesis of Al-TiO_2 system. It showed that increasing heating rate causes both a decrease in the starting thermal explosion temperature and the unevenness of Al_2O_3 particle size in final product. With the increase of pre-heating temperature, the particle size of Al_2O_3 in final product decreases. With the increase of reactant particle size of Al, both the starting thermal explosion temperature and the particle size of Al_2O_3 in final product increase gradually. The apparent activation energy of the thermal explosion system was measured to be 585.6kJ/mol. |
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| Keywords: | thermal explosion synthesis cermet Ti-Al_2O_3 |
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