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Volume 25 Issue 1
Jan.  2003
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Wang Xiaoxia, Liao Xianheng, Luo Jirun, Zhao Qinglan. Study on the influence of aluminates structure on cathode characteristics[J]. Journal of Electronics & Information Technology, 2003, 25(1): 131-134.
Citation: Wang Xiaoxia, Liao Xianheng, Luo Jirun, Zhao Qinglan. Study on the influence of aluminates structure on cathode characteristics[J]. Journal of Electronics & Information Technology, 2003, 25(1): 131-134.

Study on the influence of aluminates structure on cathode characteristics

  • Received Date: 2002-03-28
  • Rev Recd Date: 2002-08-22
  • Publish Date: 2003-01-19
  • The structure of aluminates which are used for Ba-W cathode is analyzed by XRD technology. It has been shown that the aluminates produced by some companies in Russian and our country are very complicated. The main single structure (Ba5CaAl4O12) of the aluminates has been formed by a new firing technology and new prescription. Its firing temperature; is 200C lower than that of conventional method. The melting point of the aluminates is lower than that of the conventional one. The cathode impregnated with the new aluminateH has high and stable emission current and low evaporation, which can improve the characteristics of Ba-W cathode.
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  • I. Brodie, R. O Jenkins, Research on emission character of Ba-W cathode, British J. Appl. Phys.,1957, 28(1), 27-31.[2]K. Dudley.[J].Emission evaporation properties of a barium calcium aluminate impregnated cathode as a function of its composition, Proc. of the 5th National Conference on Advances in electron tube technique.1961,:-[3]L.R. Falce, Dispenser cathodes: the current state of the technology, IEEE Trans. on Electron Devices, 1983, 17(4), 448-451.[4]吴兆皓,论述钡钨阴极发射面的本质,真空电子学会第四届学术年会论文摘要汇编,咸阳,1982,133-141.[5]谢有畅等,结构化学,成都,电子科技大学出版社,1990,40-102.[6]T. Sakurai , K. Sato, C. Kimura, An improved dispenser cathode, IEEE Trans. on Electron Devices, 1984, 12(3), 322-325.[7]张恩虬,关于热电子发射的评述(Ⅲ)一动态表面发射中心,物理学报,1976,25(1),23-30.
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