| Si和Al对机械合金化合成Ti_3SiC_2的影响 |
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| 引用本文： | 王明智,梁宝岩,韩欣. Si和Al对机械合金化合成Ti_3SiC_2的影响[J]. 燕山大学学报, 2009, 33(4): 294-298 |
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| 作者姓名： | 王明智 梁宝岩 韩欣 |
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| 作者单位： | 燕山大学,亚稳材料制备技术与科学国家重点实验室,河北,秦皇岛,066004 |
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| 基金项目： | 燕山大学优秀博士生科学基金资助项目 |
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| 摘 要： | 采用3Ti/Si/2C单质粉体为原料,进行机械合金化,以合成Ti3SiC2粉体.研究了Al和过量Si对机械合金化合成Ti3SiC2的影响.研究结果表明,机械合金化单质混合粉体,会诱发自蔓延反应.反应后产生大量坚硬的颗粒状产物.机械合金化3Ti/Si/2C粉体,会产生组成相为TiC、Ti3SiC2、TiSi2和Ti5Si3的粉体与颗粒产物.添过量Si并不会促进机械合金化反应合成Ti3SiC2.添适量Al可消除硅化物,明显促进反应合成Ti3SiC2.采用3Ti/Si/2C/0.15A1粉体作原料时,颗粒产物中Ti3SiC2含量最高,为92.8wt%;而采用3Ti/Si/2C/0.20A1粉体作原料时,粉体产物中Ti3SiC2含量最高,为61.9wt%.
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| 关 键 词： | 机械合金化 |
Effect of Si and Al on reaction synthesis of Ti_3SiC_2 by mechanical alloying |
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| WANG Ming-zhi,LIANG Bao-yan,HAN Xin. Effect of Si and Al on reaction synthesis of Ti_3SiC_2 by mechanical alloying[J]. Journal of Yanshan University, 2009, 33(4): 294-298 |
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| Authors: | WANG Ming-zhi LIANG Bao-yan HAN Xin |
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| Affiliation: | State Key Laboratory of Metastable Materials Science and Technology;Yanshan University;Qinhuangdao;Hebei 066004;China |
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| Abstract: | 3Ti/Si/2C elemental powders were used as the starting materials for the synthesis of Ti3SiC2 powders by mechanical alloying. Effect of Si and Al element on the reaction synthesis of Ti3SiC2 was investigated. The result shows that mechanical alloying of 3Ti/Si/2C powders may induce self-propagation reaction. After reaction,amounts of rigor granules were produced. The powders and granules product contained TiC,Ti3SiC2,TiSi2 and Ti5Si3 were synthesized by mechanical alloying of 3Ti/Si/2C powders. Excessive Si ... |
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| Keywords: | Ti3SiC2 Si.Al |
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