The U-shaped EB tungsten filament is a high-purity tungsten wire heating element bent into a U shape, widely used in electron beam evaporation coating equipment. Its compact structure and easy installation offer excellent high-temperature strength, corrosion resistance, and superior electron emission performance, making it suitable for long-term stable operation in high vacuum and high-temperature environments. The U-shaped design helps focus the electron beam, enhancing heating efficiency and evaporation uniformity. It is extensively applied in optical coatings, semiconductor manufacturing, and metal thin film deposition, serving as a critical component in vacuum thermal evaporation processes.
