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本文着重介绍利用一些近代分析仪器和表层及表面分析方法,较为系统地研究了WY_2O_3金属陶瓷阴极经1400℃、500小时蒸发实验及其在磁控管内工作500小时以后,阴极表层及表面发射体Y_2O_3的变化。同时相应地测量了该阴极的二次发射系数。结果表明,该阴极可以用于大功率磁控管且能在较长时间内稳定地工作。同时,本文对用分析结果指导该阴极的烧结工艺和制造工艺也作了介绍。
This article focuses on the use of some modern analytical instruments and surface and surface analysis methods, a more systematic study of WY_2O_3 cermet cathode after 1400 ℃, 500 hours of evaporation experiments and their work in the magnetron 500 hours later, the cathode surface and surface emitters Y_2O_3 changes. The secondary emission coefficient of the cathode was measured accordingly. The results show that the cathode can be used for high-power magnetron and can work stably for a long time. At the same time, this paper also introduces the sintering process and manufacturing process of the cathode with the analysis results.