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- W2018812918 abstract "We describe in this paper scandate-impregnated cathodes with sub-micron scandia-doped tungsten matrices having an improved uniformity of the Sc distribution. The scandia-doped tungsten powders were made by both liquid–solid doping and liquid–liquid doping methods on the basis of previous research. By improving pressing, sintering and impregnating procedures, we have obtained scandate-impregnated cathodes with a good uniformity of the Sc2O3- distribution. The porosity of the sub-micron structure matrix and content of impregnants inside the matrix are similar to those of conventionally impregnated cathodes. Space charge limited current densities of more than 30 A/cm2 at 850 °Cb have been obtained in a reproducible way. The current density continuously increases during the first 2000 h life test at 950 °Cb with a dc load of 2 A/cm2 and are stable for at least 3000 h." @default.
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- W2018812918 date "2005-09-01" @default.
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- W2018812918 title "Characteristics of scandate-impregnated cathodes with sub-micron scandia-doped matrices" @default.
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- W2018812918 doi "https://doi.org/10.1016/j.apsusc.2005.03.196" @default.
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