【摘要】 在不同的温度、压力和电压条件下，对开发出来的阴极材料进行了电发射特性的试验研究研究结果表明，温度、压力及电压对发射电流均有显著的影响，在高温（ ＞ ８００ ℃） 条件下，由阴极材料热发射所获得的电流密度，比通过电晕方式所得到的电流密度至少高一个数量级阴极板具有良好的稳定性，可在高温高压下长期使用更多还原

【Abstract】 The electron-emitting properties of the cathode material developed were tested under different temperature, pressure and voltage. The results show that at high temperature( >800℃), the emission current density, which is significantly dependent on temperature, pressure and voltage, is at least of the order of one more than that from an ESP. The emitter has good electron-emitting stability and can be used under high temperature and high pressure for a long time.更多还原