用空心钨球制备掺钪浸渍阴极

IVESC 2012 Pub Date : 2012-04-24 DOI:10.1109/IVESC.2012.6264159

Jinshu Wang, Yuntao Cui, W. Liu, Xi Wang, Yiman Wang, Meiling Zhou

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引用次数: 1

摘要

采用喷雾干燥与氢气两步还原相结合的新方法制备了掺钪钨粉。在粉末的基础上，612铝酸盐浸渍阴极(SDI-612)在900oCb下具有72.2A/cm2的优异发射性能，且SDI-612阴极的蒸发速率较低，为8.45*10-9g。cm-2s-1在1150oc。

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Scandia doped impregnated cathode prepared with hollow tungsten spheres

The scandia doped tungsten powders have been obtained by a new method of spray drying combined with two-step reduction in hydrogen atmosphere. Based on the powders, the cathode impregnated with 612 aluminates (SDI-612) has excellent emission capability of 72.2A/cm² at 900^oC_b, moreover, the SDI-612 cathode has a lower evaporation rate of 8.45*10^-9g.cm^-2s^-1 at 1150^oC_b.

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IVESC 2012

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