| 铝液原位反应生成TiAl_3晶须的条件和机制分析 |
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| 引用本文： | 陈国香,杨滨.铝液原位反应生成TiAl_3晶须的条件和机制分析[J].热加工工艺,2001(6). |
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| 作者姓名： | 陈国香 杨滨 |
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| 作者单位： | 南昌大学机电学院 江西南昌330029
(陈国香)，北京科技大学 北京100083(杨滨) |
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| 基金项目： | 江西省自然科学基金资助项目 (9750 8) |
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| 摘 要： | 分析了液相原位反应生成 Ti B2 颗粒过程中 ,Ti Al3晶须的生成条件和生长机理。结果表明 ,预制块中 Ti与B的摩尔比显著影响 Ti Al3晶须的生成 ,Ti Al3晶须的生长机理为 VL S机制 ,由于晶须生长过程中触媒液滴中的 Ti参加反应 ,使它与一般晶须生长的 VL S机制有所不同
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| 关 键 词： | 原位反应 TiAl3晶须 生长机制 |
Analysis of the Condition and Growth Mechanism of TiAl_3 Whisker Fabricated by in-situ Reaction in Molten Aluminum |
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| CHEN Guo xiang ,YANG Bin.Analysis of the Condition and Growth Mechanism of TiAl_3 Whisker Fabricated by in-situ Reaction in Molten Aluminum[J].Hot Working Technology,2001(6). |
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| Authors: | CHEN Guo xiang YANG Bin |
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| Affiliation: | CHEN Guo xiang 1,YANG Bin 2 |
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| Abstract: | The formation condition and growth mechanism of the TiAl 3 whiskers are studied during the formation process of TiB 2 particulate fabricated by in situ reaction in molten aluminum.The results show that the effect of Ti/B molar rate in the preform on the formation of the TiAl 3 whiskers is much obvious.The growth of the whiskers is proved to be controlled by a vapor liquid solid(VLS) mechanism.The titanium and aluminum atoms in the catalytic droplet,however,have been confirmed to react with each other,which is different from other whiskers growing by a VLS mechanism where the composition in the catalytic droplet is constant. |
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| Keywords: | in situ reaction TiAl 3 whiskers growth mechanism |
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