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- W2040781615 abstract "Conventional barium aluminate-impregnated tungsten matrix cathodes were coated with a metallic layer such as iridium, osmium, platinum or tungsten sputtered in an argon atmosphere. This simple practical procedure has been shown to lead to an enhancement in emission capability in the case of an iridium-coated or osmium-coated cathode, comparable with that reported in the literature using very much more complex procedures. The iridium- or osmium-coated cathodes exhibit effective work functions of 1·93 to 1·98 ev over a range 1200 to 1370 K. Results on coated (Os, Ir, Pt, W) and uncoated cathodes with 45% porosity matrices are presented and compared with an iridium-coated cathode with a 20% porosity matrix." @default.
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- W2040781615 date "1970-03-01" @default.
- W2040781615 modified "2023-09-27" @default.
- W2040781615 title "Sputtered metallic coatings on barium aluminate cathodes for lower operating temperatures" @default.
- W2040781615 cites W1981859464 @default.
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- W2040781615 doi "https://doi.org/10.1088/0022-3727/3/3/427" @default.
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