| 磨球直径对机械合金化合成TiC反应过程的影响 |
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| 引用本文： | 庄健,刘勇兵,曹占义,刘学然,曹实. 磨球直径对机械合金化合成TiC反应过程的影响[J]. 吉林大学学报(工学版), 2009, 39(1): 61-65 |
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| 作者姓名： | 庄健 刘勇兵 曹占义 刘学然 曹实 |
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| 作者单位： | 吉林大学,汽车材料教育部重点实验室,长春,130022;吉林大学,材料科学与工程学院,长春,130022;北京邮电大学,计算机科学与工程学院,北京,100876 |
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| 基金项目： | 吉林省长春市科技计划项目(04-02GG174);;吉林省计委项目;;吉林大学“985工程”项目;;吉林大学研究生创新基金项目 |
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| 摘 要： | 使用机械合金化方法在卧式行星式球磨机上制备了TiC。利用X射线衍射、扫描电子显微镜对粉末的微观结构和形貌的变化进行了分析。讨论了在机械合金化制备TiC过程中磨球直径对于球磨效率、球磨能量的传递以及Ti+C→TiC发生机理的影响,对于TiC的不同形成机理作出了解释。结果表明:在机械合金化制备TiC的过程中,磨球直径对于反应发生的速率和反应机理有着明显的影响,即当磨球直径较小时,Ti+C→TiC反应是以机械诱发扩散反应(MRD)的形式逐步进行的;当磨球直径较大时,反应是以自蔓燃反应(SHS)的形式快速进行的。
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| 关 键 词： | 金属材料 机械合金化 机械诱发扩散反应 自蔓燃反应 反应模式 |
| 收稿时间： | 2007-09-25 |
| 修稿时间： | 2007-12-25 |
Influence of diameter of milling balls on TiC synthesis process by mechanical alloying |
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| ZHUANG Jian,LIU Yong-bing,CAO Zhan-yi,LIU Xue-ran,CAO Shi. Influence of diameter of milling balls on TiC synthesis process by mechanical alloying[J]. Journal of Jilin University:Eng and Technol Ed, 2009, 39(1): 61-65 |
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| Authors: | ZHUANG Jian LIU Yong-bing CAO Zhan-yi LIU Xue-ran CAO Shi |
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| Affiliation: | 1.Key Laboratory of Automobile Materials,Ministry of Education,Jilin University,Changchun 130022,China;2.College of Materials Science and Engineering,Jilin University,Changchun 130022,China;3.School of Computer Science and Technology,Beijing University of Posts and Telecommunications,Beijing 100876,China |
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| Abstract: | TiC has been synthesized by mechanical alloying employing horizontal planetary ball mill,XRD and SEM technique were used to characterize changes in morphology and microstructure of compound powders.The influence of diameter of milling ball on the milling efficiency,milling energy transfer as well as the reaction mode Ti+C→TiC in the MA process was discussed.The results indicate that the diameter influenced both reaction mode and speed,namely as the ball diameter is small,Ti + C → TiC reaction develops gradually through mechanically induced diffusion-controlled reaction(MRD);as the ball diameter is large,the reaction progresses rapid in SHS mode. |
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| Keywords: | metallic material mechanical alloying mechanically induced diffusion-controlled reaction(MRD) self-propagating high-temperature synthesis(SHS) reaction mode |
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