Preparation of ultrafine Mg powders with evaporation and condensation method
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摘要: 采用電阻加熱蒸發和感應加熱蒸發法分別制備出超細鎂粉,系統研究了充氣壓力對粉體產率和粒度的影響,采用XRD、TEM等分析手段對所制備的粉體結構進行表征.結果顯示:感應加熱蒸發法的產率遠大于電阻加熱蒸發法的產率;隨充氣壓力提高,粉體產率降低,粉體平均粒徑增大.所制備的超細鎂粉為鏈球形結構、多晶態,純度較高,粒度分布范圍窄.Abstract: Ultrafine Mg powders were prepared by resistance heating evaporation and induction heating evaporation respectively.The effects of gas pressure on the productivity and granularity of the powders were systematically studied.The powder structure was analyzed by XRD,TEM and other analysis methods.The results show that the productivity of induction heating evaporation is larger than that of resistance heating evaporation.The productivity decreases and the mean particle size increases with increasing gas pressure.The ultrafine Mg powders are polymorphic,with a chain-ball structure and high purity,and the distribution of particle size is narrow.
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Key words:
- ultrafine powders /
- magnesium /
- resistance heating /
- induction heating /
- particle size
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