Tungsten Heater in Vacuum Evaporation
Tungsten heater is a key heating element used in vacuum evaporation coating equipment, fabricated from high-purity tungsten wire. It mainly serves as an evaporation source, heating and vaporizing coating materials such as aluminum wire or aluminum pellets under high-vacuum conditions, allowing them to condense on the substrate surface to form a uniform thin film.
Features of Tungsten Heater in Vacuum Evaporation
(1) High-Temperature Resistance
Tungsten’s 3410°C melting point ensures structural stability under high vacuum and severe thermal loads, enabling long-term operation without melting or failure.
(2) Stable Thermal Field Performance
Maintain stable electrical resistance and low thermal expansion, ensuring consistent heating behavior, improved evaporation efficiency, and uniform film deposition.
(3) High Surface Purity
Remove oxide layers and impurities through electrolytic polishing or chemical cleaning, significantly reducing outgassing in vacuum environments and improving coating cleanliness.
Applications of Tungsten Heater in Vacuum Evaporation
(1) Vacuum Coating Equipment Evaporation
Used for metallization of mirrors, reflective coatings, solar thermal tubes, and decorative surfaces, ensuring stable evaporation and deposition performance.
(2) Semiconductor Process Heating
Used in electrode layer deposition, localized high-temperature evaporation, and thermal zone control in electronic and vacuum device manufacturing.
(3) Optical Thin-Film Deposition
Used as a micro-evaporation source for precision optical lenses, filters, and anti-reflection coatings.
(4) Vacuum Thermal Field Auxiliary Heating
Used as a local auxiliary heating element in vacuum systems to stabilize workpiece temperature distribution or promote uniform evaporation of coating materials, improving thin-film deposition consistency.
Specifications of CTIA’s Tungsten Heater in Vacuum Evaporation
The specifications of CTIA’s tungsten heater are as follows:
CTIA GROUP, with over 30 years of experience in tungsten heater manufacturing, specializes in advanced customization and precision engineering solutions. Based on application scenarios, vacuum conditions and installation space, CTIA systematically optimizes key parameters including wire diameter, doping type and content, structure, length, bending angle and support positions. Surface treatments such as electrolytic polishing or alkaline cleaning are also applied, enabling full-process customized solutions from material selection, structural design through to final manufacturing.
For any inquiry, please contact?tungsten heater manufacturer: CTIA GROUP
Email: sales@chinatungsten.com
Tel: 0086 592 5129696 / 0086 592 5129595
Website: www.baixiaosheng123.com
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4. Stranded tungsten wire for making tungsten heater