| Effect of Plasma Spheroidization Process on the Microstructure and Crystallographic Phases of Silica, Alumina and Nickel Particles |
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| 作者姓名： | 胡鹏 闫世凯 袁方利 白柳杨 李晋林 陈运法 |
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| 作者单位： | [1]Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100080, China [2]Graduate University of Chinese Academy of Sciences, Beijing 100049, China |
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| 基金项目： | supported by National Natural Science Foundation of China （No. 50574083） |
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| 摘 要： | During the plasma spheroidization process powders undergo different changes in their microstructures and crystal phases. In this paper, simple calculation of heat transfer between the plasma and a suspended particle was performed based on three hypotheses for the purpose of guiding experiments. Experimental investigation of the crystal phases and microstructural changes during the plasma processing was made using silica, alumina and nickel powders as starting materials. It has been revealed from the experimental results that these materials undergo different changes in crystal phases and microstructures, and these changes are essentially determined by the structures, properties and aggregate states of the starting materials.
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| 关 键 词： | 射频等离子体 延期热处理 微观结构 晶相 硅 铝 镍 |
| 修稿时间： | 2006-08-29 |
Effect of Plasma Spheroidization Process on the Microstructure and Crystallographic Phases of Silica, Alumina and Nickel Particles |
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| HU Peng, YAN Shikai, YUAN Fangli, BAI Liuyang, LI Jinlin, CHEN Yunfa.Effect of Plasma Spheroidization Process on the Microstructure and Crystallographic Phases of Silica, Alumina and Nickel Particles[J].Plasma Science & Technology,2007,9(5):611-615. |
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| Authors: | HU Peng YAN Shikai YUAN Fangli BAI Liuyang LI Jinlin CHEN Yunfa |
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| Affiliation: | 1 Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100080, China ;2 Graduate University of Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | During the plasma spheroidization process powders undergo different changes in their microstructures and crystal phases. In this paper, simple calculation of heat transfer between the plasma and a suspended particle was performed based on three hypotheses for the purpose of guiding experiments. Experimental investigation of the crystal phases and microstructural changes during the plasma processing was made using silica, alumina and nickel powders as starting materials. It has been revealed from the experimental results that these materials undergo different changes in crystal phases and microstructures, and these changes are essentially determined by the structures, properties and aggregate states of the starting materials. |
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| Keywords: | radio frequency plasma spheroidization microstructure crystal phase silica alumina nickel |
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