The material composition of barium tungsten cathode is usually tungsten alloy, which contains a certain proportion of barium. Such an alloy can improve the electron emission performance, so that the electrode has stable performance in a high-temperature environment. The specific material composition can be adjusted according to the application requirements, but in general, the basic material composition of barium tungsten cathode includes:
Tungsten (W): Tungsten is a high melting point metal with good thermal stability and electrical conductivity. It is one of the main components of the barium tungsten cathode, providing the structure and conductivity of the electrode.
Barium (Ba): Barium is a key component of barium tungsten cathodes, which is introduced into tungsten alloys to improve electron emission performance. The addition of barium can promote the emission of electrons from the electrode surface to form electron beams.
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