What's Barium Tungsten Electrode?
1. What’s Barium Tungsten Electrode?
Barium tungsten electrode is a functional tungsten electrode made by adding an appropriate amount of barium-based active oxides into a high-purity tungsten matrix. Barium has a low work function, which significantly enhances the electron emission capability of the electrode surface. As a result, barium tungsten electrode has important applications in electron emission, arc discharge, and vacuum electronic devices, and is widely used in electron guns, vacuum switches, discharge light sources, electron beam equipment, and special welding and plasma systems.
2. Advantages of CTIA’s Barium Tungsten Electrode
(1) Excellent Electron Emission Performance
Barium forms an active emission layer at high temperature, reducing work function and improving emission efficiency by 20%-50% compared with pure tungsten electrode, with better arc ignition and discharge stability.
(2) Lower Operating Temperature
Enhanced electron emission enables stable operation at 1800-2400°C, reducing thermal load compared with pure tungsten electrode and improving system efficiency.
(3) Good High-Temperature Resistance
Tungsten melting point of 3422°C ensures stable structure and dimensional accuracy under vacuum or inert gas conditions.
(4) Long Service Life
Optimized barium content reduces evaporation and erosion, extending continuous operation time and reducing maintenance frequency.
3. Applications of CTIA’s Barium Tungsten Electrode
(1) Electron Gun Cathode for Electron Beam Equipment
Used in electron beam welding, electron beam melting, and electron beam evaporation systems as an electron emission source.
(2) Vacuum Electronic Devices
Used in vacuum tubes, high-power electron tubes, microwave devices, and special electron emission components.
(3) Vacuum Switches and Discharge Devices
Used as a stable electron source in high-voltage switches, vacuum interrupters, and gas discharge systems.
(4) High-Intensity Discharge Light Sources
Used in high-pressure mercury lamps, xenon lamps, and special discharge lamp cathode systems.
4. Specifications of CTIA’s Barium Tungsten Electrode
(1) Diameter: 0.3-20.0 mm
(2) Length: 10-500 mm
(3) Surface Condition: Polished
(4) Note: CTIA supports customized dimensions for electron emission components based on your requirements
Backed by more than three decades of experience in tungsten electrode manufacturing, CTIA GROUP provides full-process production capabilities from high-purity tungsten powder preparation, doping formulation control, isostatic pressing, and sintering densification, to precision machining. By strictly controlling impurity content, grain size, and microstructure uniformity, CTIA ensures stable electron emission performance, high-temperature reliability, and batch-to-batch consistency, delivering reliable tungsten electrode solution for electron beam equipment, vacuum electronic device, and high-end industrial systems.
For any inquiry, please contact tungsten electrode manufacturer: CTIA GROUP
Email: sales@chinatungsten.com
Tel: 0086 592 5129696 / 0086 592 5129595
Website: www.tungsten.com.cn
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