Electron emitting barium-calcium aluminate obtained from chemical solution techniques
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2005
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INTERNATIONAL MICROWAVE AND OPTOELECTRONICS CONFERENCE
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Resumo
This paper reports a chemical technique to
obtain barium-calcium aluminates used in impregnated
thermionic cathodes. This procedure has been employed to
improve the thermionic emission characteristics of the
cathodes and to facilitate the preparation process of the
emitting material. The crystallized powders were obtained
using a mixed solution that contains barium, calcium, and
aluminum in their chemical formula. Thermogravimetry and
X-Ray diffraction were used to investigate the final product
of the experiments. Results reported from solid state reaction
are compared with those obtained using crystallization
techniques.
Como referenciar
HIGASHI, C.; LIMA, N.B. de; MATOS, J.R.; GIOVEDI, C.; MOTTA, C.C. Electron emitting barium-calcium aluminate obtained from chemical solution techniques. In: INTERNATIONAL MICROWAVE AND OPTOELECTRONICS CONFERENCE, July 25-28, 2005, Brasilia, DF. Proceedings... p. 343-346. DOI: 10.1109/IMOC.2005.1580014. Disponível em: http://repositorio.ipen.br/handle/123456789/16058. Acesso em: 30 Dec 2025.
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