M-Type Tungsten Heater
1.What Is M-Type Tungsten Heater?
M-type tungsten heater is a resistive evaporation source fabricated from tungsten wire through precision forming into a symmetrical M-shaped geometry. It is widely used in vacuum evaporation deposition systems and is one of the most established tungsten heater configurations. It is also known as M-shaped tungsten heater, hump type tungsten heater, or double peak tungsten heater.
2.Materials and Manufacturing of M-Type Tungsten Heater
CTIA uses high-purity tungsten wire with purity ≥99.95% or doped tungsten wire with enhanced high-temperature creep resistance.
(a) Precision forming: Precision twisting and bending to ensure dimensional consistency.
(b) Heat treatment: Repeated high-temperature annealing to relieve residual stress.
(c) Surface finishing: Electrolytic polishing and chemical cleaning to reduce surface defects and contamination.
3.Features of CTIA’s M-Type Tungsten Heater
(a) Concentrated central heating zone: The central bent section provides higher current density, forming the primary evaporation area for controlled deposition.
(b) Symmetrical support structure: Balanced geometry improves installation stability and minimizes displacement during operation.
(c) Effective molten material retention: Bend sections help restrict molten metal flow and reduce spreading toward terminal ends.
(d) Thermal stress management: Multi-bend geometry distributes thermal expansion stress and reduces deformation risk at elevated temperatures.
4.Applications of CTIA’s M-Type Tungsten Heater
(a) Semiconductor and microelectronics: Used for wafer metallization and electrode layer deposition.
(b) Display and optical coating: Used for Liquid Crystal Display (LCD) color filters, Organic Light-Emitting Diode (OLED) substrates, and anti-reflection coatings for optical components.
(c) Decorative coating: Used for metallization of plastic and metal components.
(d) Physical Vapor Deposition (PVD) research: Used as a resistive evaporation source in laboratory coating systems.
5.Specifications of CTIA’s M-Type Tungsten Heater
The specifications of CTIA’s M-type tungsten heater are as follows:
6.Selection Guide of M-Type Tungsten Heater
(a) Workpiece geometry: Suitable for medium-area or regularly distributed substrates requiring multi-point evaporation.
(b) Thermal uniformity: Suitable where balanced heat distribution is required without ultra-high precision demands.
(c) Evaporation materials: Suitable for aluminum wire, metal pellets, and materials requiring stable positioning and flow control.
(d) Equipment space: Suitable where installation space is limited but an extended heating area is required.
(e) Operating conditions: Suitable for continuous or cyclic heating processes requiring stable performance and long service life.
CTIA GROUP, with over 30 years of expertise in tungsten heater manufacturing, provides advanced engineering design and precision manufacturing solutions by optimizing key parameters including tungsten wire diameter, strand count, M-peak height, leg spacing, coil diameter, overall length, and bending angle based on application scenarios, operating temperature, and power requirements, while integrating surface treatments such as precision polishing and functional coatings to deliver full-process customized solutions tailored to specific operating conditions.
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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