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本文将首先介绍制造氧化物阴极的常用方法。然后,将详细讨论适合于不同温度和环境条件的阴极化合物的制造方法。还将着重叙述关键性的制造工序:只有在不同制造阶段,采取适当措施,才能得到适合脉冲宽度为2.5微秒,工作比为千分之一的工作条件的阴极。此类阴极,工作于800℃温度左右时,在空间电荷限制状态下产生的电流密度为7安培/厘米~2。它尤其适用于某些阴极一次发射显得重要的磁控管。
This article will first describe the common method of making oxide cathodes. Then, a method of making a cathode compound suitable for different temperature and environmental conditions will be discussed in detail. Emphasis will also be placed on key manufacturing processes: Only when appropriate steps are taken at different stages of manufacture can cathodes suitable for working conditions with a pulse width of 2.5 microseconds and a work-in-one ratio of one-thousandth. Such a cathode, operating at a temperature of about 800 ° C, produces a current density of 7 Amps / cm 2 under space charge-limited conditions. It is especially suitable for magnetrons that are important for some primary cathode emission.