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Preparation of Mg-Li Alloys via Vacuum Silicothermic Reduction Process
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Preparation of Mg-Li Alloys via Vacuum Silicothermic Reduction Process
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The Ministry of Science and Technology of China (2010DFR50010)

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    摘要:

    對真空硅熱法制備Mg-Li合金進行實驗研究，采用X射線衍射儀對產(chǎn)物和殘渣進行物相分析，利用掃描電子顯微鏡觀察產(chǎn)物的冷凝形貌。XRD分析表明，產(chǎn)物的主要成分為Mg，反應(yīng)的主渣相為Ca2SiO4。SEM分析表明，產(chǎn)物微觀上相繼呈片狀、短棒狀和絮狀。同時研究了在未添加螢石時硅鐵添加量、還原溫度、成型壓力和保溫時間對Mg-Li合金制備的影響。在還原溫度1250 ℃、硅鐵添加量110%、成型壓力15 MPa和保溫時間150 min 的條件下，鎂鋰還原率分別為81.38%和99.58%

    Abstract:

    Preparation of Mg-Li alloys by vacuum silicothermic reduction process was investigated. XRD was employed to analyze the phase composition of the product and slag. SEM was used to characterize the condensation morphology of the product. The results show that the main phase of the product is Mg and that of slag is Ca2SiO4. The product successively presents lamellar, short rod-like and flocculent shape along with the condensation. When adding no fluorite, the impacts of extraction conditions, including ferrosilicon addition, temperature, compacting pressure and holding time, on Mg and Li recoveries were evaluated. Under the conditions of temperature of 1250 °C, ferrosilicon addition of 110%, compacting pressure of 15 MPa and holding time of 150 min, Mg and Li recoveries are 81.38% and 99.58%, respectively

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鄭笑芳,彭曉東,李俊辰,魏群義. Preparation of Mg-Li Alloys via Vacuum Silicothermic Reduction Process[J].稀有金屬材料與工程,2014,43(9):2079~2082.[Zheng Xiaofang, Peng Xiaodong, Li Junchen, Wei Qunyi. Preparation of Mg-Li Alloys via Vacuum Silicothermic Reduction Process[J]. Rare Metal Materials and Engineering,2014,43(9):2079~2082.]
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  • 收稿日期:2013-09-11
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  • 在線發(fā)布日期: 2015-02-25
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