陈文波,陈伦江,刘川东,程昌明,童洪辉.射频等离子体球化中钼粉颗粒加热过程的数值模拟[J].稀有金属材料与工程,2019,47(3):859~864.[CHEN Wen-bo,CHEN Lun-jiang,Liu Chuan-dong,CHENG Chang-ming,TONG Hong-hui.Numerical simulation of heating process of Molybdenum powder in radio frequency plasma spheroidization[J].Rare Metal Materials and Engineering,2019,47(3):859~864.]
射频等离子体球化中钼粉颗粒加热过程的数值模拟
投稿时间:2017-07-25  修订日期:2017-09-06
中文关键词:  射频等离子体  钼粉颗粒  加热过程  数值模拟
基金项目:国家自然科学基金资助(项目号11535003)
中文摘要:
      对射频等离子体球化中钼粉颗粒的加热过程进行研究可以为优化等离子体制备球形钼粉的工艺过程提供参考。本文采用了数值模拟的方法研究了线圈电流频率、粉枪位置及送粉速率等参数对钼粉颗粒在射频等离子体中的运动轨迹及加热过程的影响效应。研究结果表明:线圈电流频率较低时,等离子体炬轴线附近的温度更高,钼粉颗粒在等离子体中运动时能够达到的温度也更高;改变粉枪位置仅对粒径较小颗粒的运动和加热有较大的影响;降低送粉速率可以提高颗粒从等离子体中获得的能量,从而在一定程度上提升钼粉的球化率。
Numerical simulation of heating process of Molybdenum powder in radio frequency plasma spheroidization
英文关键词:radio frequency plasma  molybdenum particles  heating process  numerical simulation
英文摘要:
      Study on heating process of molybdenum particles in radio frequency plasma can provide theoretical guidelines for improving preparation process of plasma spheroidization. In this paper, the effect of coil current frequency, postion of injection probe tip and powder feeder rate on motion trajectories and heating process of molybdenum particles in plasma have been studied by using numerical simulation method. The research shows that molybdenum particles can be heated to higher temperature during the spheroidization process when coil current frequency is lower beacuase of higher plasma temperature; Chaning of injection probe tip postion have great effect on motion and heating of smaller particles; Decrease of powder feeder rate can increase the energy get from plasma, thus improving the spheroidization effect.
作者单位E-mail
陈文波 南华大学电气工程学院 snipers2004@163.com 
陈伦江 核工业西南物理研究院  
刘川东 核工业西南物理研究院  
程昌明 核工业西南物理研究院  
童洪辉 核工业西南物理研究院  
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