| 颗粒状纳米碳酸钡锶钙的研制 |
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| 引用本文： | 王其富,王小霞,罗积润,赵青兰.颗粒状纳米碳酸钡锶钙的研制[J].海洋学报,2010,32(10):7383-7389. |
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| 作者姓名： | 王其富 王小霞 罗积润 赵青兰 |
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| 作者单位： | 中国科学院电子学研究所, 中国科学院高功率微波源与技术重点实验室, 北京 100190; 中国科学院研究生院,北京 100039;中国科学院电子学研究所, 中国科学院高功率微波源与技术重点实验室, 北京 100190;中国科学院电子学研究所, 中国科学院高功率微波源与技术重点实验室, 北京 100190;中国科学院电子学研究所, 中国科学院高功率微波源与技术重点实验室, 北京 100190 |
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| 基金项目： | 国家自然科学基金(批准号:50702059)资助的课题. |
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| 摘 要： | 介绍一种气-液相合成技术合成氧化物阴极用三元碳酸盐,研究沉淀温度、浓度及搅拌速率对合成碳酸钡锶钙结晶形貌的影响,分析其结晶过程.通过优化合成溶液温度及合成浓度,控制碳酸盐的成核和生长速率,合成了一种颗粒状纳米三元碳酸盐,并进行直流发射测试.实验表明,这种纳米碳酸盐能明显提高氧化物阴极的发射性能.
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| 关 键 词： | 气-液相合成技术 纳米碳酸钡锶钙 结晶 氧化物阴极 |
Preparation of nano-particle carbonates emission materials |
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| Wang Qi-Fu,Wang Xiao-Xi,Luo Ji-Run and Zhao Qing-Lan.Preparation of nano-particle carbonates emission materials[J].Acta Oceanologica Sinica (in Chinese),2010,32(10):7383-7389. |
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| Authors: | Wang Qi-Fu Wang Xiao-Xi Luo Ji-Run and Zhao Qing-Lan |
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| Institution: | Key Laboratory of High Power Microwave Sources and Technologies, Institute of Electronics,Chinese Academy of Sciences, Beijing 100190, China; Graduate University of Chinese Academy of Sciences, Beijing 100039, China;Key Laboratory of High Power Microwave Sources and Technologies, Institute of Electronics,Chinese Academy of Sciences, Beijing 100190, China;Key Laboratory of High Power Microwave Sources and Technologies, Institute of Electronics,Chinese Academy of Sciences, Beijing 100190, China;Key Laboratory of High Power Microwave Sources and Technologies, Institute of Electronics,Chinese Academy of Sciences, Beijing 100190, China |
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| Abstract: | Oxide cathode has been widely used as electron emission source in vacuum electronic devices. Emission of an oxide cathode is dependent upon the ratio of the three kinds of ingredients and the microscopic shape of alkaline earth carbonates on the cathode surface. The synthesizing method plays a key role in dctermining the shape and ingredient of the carbonates. A gas-liquid synthetic method has been used to prepare the carbonate in this paper. The influences of temperature, concentration of constituents and whisk velocity were investigated. A nano-particle carbonate is synthesized by optimizing temperature and concentration. |
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| Keywords: | gas-liquid synthetic method nano-particle carbonate crystal oxide cathode |
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