The preparation of barium tungsten electrode by impregnation is a process commonly used in electron emission materials (such as hot cathodes). By impregnating active barium compounds into porous tungsten substrates, composite electrodes with high-efficiency electron emission performance are formed. The following is a detailed preparation process and key points:

As a high-performance electrode material, the core advantages of barium tungsten electrode are reflected in the following four aspects:

The key preparation processes of barium tungsten electrode include porous tungsten matrix, barium impregnation reduction, etc. The following is its main process flow:

I. Preparation of Porous Tungsten Matrix

As a commonly used cathode material, although barium tungsten electrode is widely used in electron tubes and gas discharge tubes, it also has some significant disadvantages. In practical applications, it is necessary to weigh its advantages and disadvantages according to specific needs, and consider technical improvements or alternative materials to make up for these shortcomings.