| 粉末烧结法合成FeSi2合金的反应机理研究 |
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| 引用本文： | 周幼华,顾豪爽. 粉末烧结法合成FeSi2合金的反应机理研究[J]. 湖北大学学报(自然科学版), 2010, 32(4): 410-413 |
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| 作者姓名： | 周幼华 顾豪爽 |
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| 作者单位： | 湖北大学,物理学与电子技术学院,湖北,武汉,430062;江汉大学,物理与信息工程学院,湖北,武汉,430056;湖北大学,物理学与电子技术学院,湖北,武汉,430062 |
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| 基金项目： | 湖北省教育厅重点科研项目 |
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| 摘 要： | 对于按Si∶Fe=2∶1充分混合均匀的Fe-Si粉体,在传统粉末烧结FeSi2合金的过程中,随着温度升高,在690℃附近,首先发生的反应是:Fe+Si=FeSi,在850℃附近,发生的是FeSi和Si反应生成α相FeSi2.常规的固相烧结和激光烧结两种制备方法均证实:由高温向低温冷却的过程中α相的FeSi2均没有完成向β相的转变;在1 200℃附近Fe-Si处于液相状态时,Fe+2Si=FeSi2的反应是优先进行的;激光烧结可以直接生产α-FeSi2.
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| 关 键 词： | FeSi2 粉末烧结 激光烧结 反应机理 |
The investigation on reaction mechanism of FeSi2 alloy by powder metallurgy method |
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| ZHOU Youhua,GU Haoshuang. The investigation on reaction mechanism of FeSi2 alloy by powder metallurgy method[J]. Journal of Hubei University(Natural Science Edition), 2010, 32(4): 410-413 |
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| Authors: | ZHOU Youhua GU Haoshuang |
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| Affiliation: | 1.School of Physics and Electronic Technology,Hubei University,Wuhan 430062,China; 2.School of Physics and Information Engineering,Jianghan University,Wuhan 430056,China) |
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| Abstract: | The fabrication of FeSi2 alloy using conventional powder metallurgy technology was presented.With the increase of the temperature,the first resultant was FeSi in Si-Fe powder（Si∶Fe=2∶1） around 690 ℃;and then α-FeSi2 could be got from FeSi and Si around 850 ℃.α-FeSi2 could directly be got from Fe-Si powder by laser sintering.The result showed that the reaction of Fe＋2Si=FeSi2 was preferential in Fe-Si liquid phase around 1 200 ℃. |
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| Keywords: | FeSi2 alloy powder metallurgy technology laser sintering reaction mechanism |
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