CTIA's Tungsten Heater in Resistive Evaporation Source
Tungsten heater is a resistive evaporation source made of high-purity tungsten wire or doped tungsten wire through precision drawing, stranding, winding, forming, and surface treatment processes. The tungsten heating element is used in vacuum evaporation equipment to heat and vaporize metal or functional materials, enabling thin film deposition on substrate surfaces.
In resistive evaporation source systems, high vacuum and high temperature operating conditions place strict requirements on heating element stability. Tungsten heaters are applied in these systems due to the following characteristics: high melting point of about 3410℃ ensures structural stability during high-temperature operation; low vapor pressure reduces material volatilization in vacuum environments and minimizes contamination; stable electrical resistance supports efficient energy conversion into heat and enables uniform thermal radiation; low thermal expansion coefficient reduces deformation during repeated thermal cycling, ensuring stable evaporation performance.
CTIA GROUP offers tungsten heaters in multiple specifications:
(1) Material: High-purity tungsten wire (≥99.95%) or doped tungsten wire.
(2) Wire diameter: 0.2~1.2mm, customizable.
(3) Structure: Single strand or multi-strand twisted (2, 3, 4, 6 strands).
(4) Shape: Straight, coil, U-frame, funnel, single-peak, double-peak, and customized geometries.
Tungsten heater is widely used as a resistive evaporation source in vacuum deposition equipment, where it heats and vaporizes metals such as aluminum, gold, and silver to form thin films on substrate surfaces. It is widely applied in optical coating, semiconductor device fabrication, metallization coatings, and functional thin film deposition processes, supporting stable evaporation and uniform film formation.
CTIA GROUP has over 30 years of experience in tungsten heater engineering and provides system-level optimization design based on equipment structure, material properties, and thermal field distribution requirements. Design parameters include tungsten wire diameter, doping type and content, structural configuration, effective heating length, and lead wire design. Surface treatments such as electrolytic polishing and alkali cleaning are available to improve surface quality and operational stability. CTIA delivers full-process customization from material selection and structural design to precision manufacturing.
For any inquiry, please contact tungsten heater manufacturer: CTIA GROUP
Email: sales@chinatungsten.com
Tel: 0086 592 5129696 / 0086 592 5129595
Website: www.tungsten.com.cn
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1.Tungsten heater quotation table
2. Catalog of tungsten heater
3. Tungsten heater models
4. Stranded tungsten wire for making tungsten heater