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Scandia doped pressed cathode was prepared by a new method of spray drying combined with two-step hydrogen reduction process. The Sc 2 O 3 and barium–calcium aluminate co-doped powders have sub-micrometer size in the range of 0.1–1μm and scandium oxide and barium–calcium aluminate are distributed evenly in the powders. The cathodes sintered by powder metallurgy at 1600°C b ...
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