| SiO2与Mg—Li合金熔体反应动力学分析 |
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| 引用本文： | 于化顺,陈熙琛.SiO2与Mg—Li合金熔体反应动力学分析[J].中国有色金属学报,1999,9(4):785-789. |
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| 作者姓名： | 于化顺 陈熙琛 |
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| 作者单位： | 山东工业大学材料科学与工程学院!济南250061(于化顺，闵光辉，刘玉先)，中国科学院物理研究所!北京100080(陈熙琛) |
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| 摘 要： | 基于液淬试样组织观察的结果， 对ＳｉＯ２ 与ＭｇＬｉ 合金熔体反应动力学进行了分析。建立了ＳｉＯ２与ＭｇＬｉ 熔体反应的动力学模型， 提出了控制粒子尺寸及其在熔体分布的措施。得出了ＳｉＯ２ 与ＭｇＬｉ 熔体反应的速度表达式， 确定了Ｍｇ２Ｓｉ 的形成位置。结果表明： ＳｉＯ２ 与ＭｇＬｉ 合金熔体的反应是分两步进行的， 即首先在界面处反应生成ＭｇＯ 与Ｓｉ， 而后Ｓｉ 与Ｍｇ 反应生成Ｍｇ２Ｓｉ。
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| 关 键 词： | Mg-Li合金 SiO_2 反应动力学 复合材料 |
Dynamics of reaction between SiO_2 and Mg-Li melt |
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| Abstract: | On the base of microstructure observation of quenching samples, dynamics of the reaction of SiO 2 with Mg Li melt was discussed. The dynamic model of the reaction was established, and the ways for controlling particle size and particle distribution in melt were proposed. The equation of the reaction rate and formed location of Mg 2Si were obtained finally. The results indicate that the reaction is carried out by two steps, MgO and Si is firstly formed at the interface, and then Mg 2Si is formed apart from the interface. |
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| Keywords: | Mg Li alloy SiO 2 reaction dynamics composites |
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