Shi-Kai Qi, Xiao-Xia Wang, Xing-Qi Wang, Ming-Wei Hu, Li Liu, Wei Zeng. A novel Y2Hf2O7 ceramic cathode applied to high power magnetron tube [J]. Acta Physica Sinica, 2020, 69(3): 037901-1
- Acta Physica Sinica
- Vol. 69, Issue 3, 037901-1 (2020)
Fig. 1. Section schematic of the Y2Hf2O7 ceramic cathode.
磁控管用新型铪酸钇陶瓷阴极剖面结构示意图
Fig. 2. Schematic of the thermionic emission testing system for the Y2Hf2O7 ceramic cathode.
铪酸钇陶瓷阴极热发射测试装置示意图
Fig. 3. I -V curves of the Y2Hf2O7 ceramic cathode.
直流发射电流密度随阳极电压变化曲线
Fig. 4. Lifetime curve of the Y2Hf2O7 ceramic cathode.
阴极寿命特性曲线
Fig. 5. curves of the Y2Hf2O7 ceramic cathode
铪酸钇陶瓷阴极
曲线
Fig. 6. Richardson curves of the Y2Hf2O7 ceramic cathode.
铪酸钇陶瓷阴极理查森直线
Fig. 7. SEM image of the active substance.电子发射活性物质SEM微观结构形貌图
Fig. 8. EDS spectrum and element content of the active substance.电子发射活性物质EDS谱图及含量
Fig. 9. XRD spectrum of the active substance.电子发射活性物质XRD谱图
Fig. 10. SEM image of the Y2Hf2O7 ceramiccathode.
铪酸钇陶瓷阴极表面SEM微观结构形貌图
Fig. 11. EDS spectrum and element content the cathode.铪酸钇陶瓷阴极表面EDS谱图及含量
Fig. 12. AES spectrum the Y2Hf2O7 ceramic cathode.
铪酸钇陶瓷阴极表面AES谱图
Fig. 13. Element content as a function of the depth from the cathode surface: (a) O element; (b) Y and Hf element.不同元素含量随阴极表面深度的变化曲线 (a) O元素; (b) Y和Hf元素
Fig. 14. Energy band diagram of the Y2Hf2O7 ceramic cathode.
铪酸钇陶瓷阴极表面能带示意图
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Table 1.
O, Y, Hf, C element content as a function of the depth using argon ion etching method.
O, Y, Hf, C元素原子百分数与氩离子蚀刻深度的关系
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