Tungsten Heater in Deposition
Tungsten heater is a key heating element used in vacuum deposition coating equipment, fabricated from high-purity tungsten wire. It mainly serves as an evaporation source, used to carry or directly heat deposition materials such as metals under high-vacuum conditions, enabling stable vaporization and allowing them to condense on the substrate surface to form uniform thin films for metal thin film and functional thin film preparation.
Features of CTIA’s Tungsten Heater in Deposition
(1) Uses high-purity tungsten wire with a purity ≥99.95%, suitable for high-vacuum evaporation environments.
(2) Melting point of approximately 3420°C ±20°C, maintaining structural stability under high-temperature evaporation conditions.
(3) High and stable electrical resistivity, suitable for resistive heating to control evaporation rate.
(4) Good high-temperature strength retention with certain creep resistance.
(5) Low vapor pressure, reducing contamination sources in vacuum environments.
(6) Compatible with various evaporation structures such as straight and bent types.
(7) Surface can be chemically cleaned or electrolytically polished to reduce outgassing risk.
(8) Suitable for continuous or batch vacuum deposition processes.
Applications of CTIA’s Tungsten Heater in Deposition
(1) Metal evaporation source heating systems in vacuum deposition equipment.
(2) Optical coating processes such as anti-reflection films, filter films, and protective films.
(3) Decorative coatings on mirrors and metallic surfaces.
(4) Plastic vacuum metallization of Acrylonitrile Butadiene Styrene (ABS), Polypropylene (PP), and Polycarbonate (PC).
(5) Solar energy and reflective material thin-film preparation.
(6) Laboratory Physical Vapor Deposition (PVD) evaporation and thin-film research equipment.
Working Principle of Tungsten Heater
Under high-vacuum conditions, electric current passes through the tungsten heater and generates resistive heating, raising it to the required evaporation temperature. The coating material loaded on the heater is thermally evaporated into atomic vapor. With a mean free path significantly greater than the chamber dimensions, vapor atoms travel without collision and directly condense on the substrate surface, forming a uniform thin film and completing the solid–gas–solid phase transformation process.
Product Parameters of CTIA’s Tungsten Heater
Product name: Tungsten heater
Product model: Customizable, including straight, hump, bent, spiral, funnel, and other structural types.
Material: Tungsten
Size: Customizable
Color: Silver-white
Purity: ≥99.95%
Melting point: 3420°C ±20°C
Surface condition: Chemical cleaning or electrolytic polishing
CTIA GROUP has over 30 years of experience in tungsten heater manufacturing and customization. Based on application requirements, CTIA optimizes key parameters including wire diameter, doping type and content, structure, length, heating length, bending angle, and support positions. Surface treatments such as electrolytic polishing and alkaline cleaning are also available, enabling full-process customization from material selection to 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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