Barium tungsten electrode plays an important role as cathode material in photomultiplier tube. Photomultiplier tube is a highly sensitive photodetector, which is widely used in particle physics, nuclear physics, astrophysics and other fields to detect weak light signals. Its working principle is to use the photoelectric effect to convert light signal into electronic signal, and then amplify the electronic signal through the electron multiplication mechanism, and finally output the electrical signal.

The optimization of the performance of barium tungsten electrode by heat treatment is a complex process, involving a comprehensive balance of microstructure, emission performance, mechanical properties and chemical stability. By precisely controlling heat treatment parameters (such as temperature, time, atmosphere and cooling rate), the electron emission efficiency, mechanical strength and service life of barium tungsten electrode can be significantly improved. The specific process needs to be customized according to the application scenario of the electrode (such as high temperature environment or high current density).

Barium tungsten electrode (W-Ba electrode) is often used in discharge lamps, vacuum tubes and other devices in high temperature environment due to its excellent high temperature oxidation resistance. Its high temperature oxidation resistance mechanism is mainly closely related to the chemical properties of barium and its role in the tungsten matrix.

Barium tungsten electrode is widely used in high-intensity gas discharge lamps, electron tubes and other fields due to its excellent electron emission performance and high stability. Its anti-ablation performance, that is, the ability to resist material loss under extreme conditions such as high temperature and high current, is a key indicator for evaluating its service life and stability.