Compared with other cathode materials, barium tungsten cathode has some significant differences, mainly focusing on electron emission performance, stability and application fields. Here are some key differences between barium tungsten cathodes and other cathode materials:
Electron emission performance: Barium tungsten cathodes are excellent in electron emission. The addition of barium can improve the emission efficiency of electrons from the surface of the cathode, so that the barium-tungsten cathode can generate high-intensity electron beams. Barium tungsten cathodes generally have advantages in terms of electron emission properties compared to other cathode materials.
Stability: Barium tungsten cathode has good stability in high temperature environment and can achieve stable electron emission at relatively low working temperature. This makes barium tungsten cathodes suitable for some applications that require operation at high temperatures.
Lifespan: Due to the stability of the barium tungsten cathode, its lifespan is relatively long. It is usually able to maintain stable electron emission performance for a relatively long period of time, thus extending its service life.
Application fields: Barium tungsten cathodes are widely used in electronic devices, such as TV camera tubes, X-ray tubes, microwave amplifiers, etc. In contrast, other cathode materials such as strontium nickel chromate (S-1), magnesium aluminum oxide (MgO), etc. are more commonly used in applications such as television picture tubes.
Price: The preparation of barium tungsten cathode may involve some special processes and materials, so the cost may be relatively high in some cases. And some other common cathode materials such as magnesium aluminum oxide are relatively low cost.
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