What's Tungsten Boat?
What's Tungsten Boat?
Tungsten boat is a boat-shaped heating container manufactured from high-quality tungsten sheet through precise stamping, bending, or welding processes. In the vacuum coating industry, it is frequently referred to as tungsten evaporation boat or evaporation tungsten boat. Shaped like a small ship, the component features a central recess designed to hold evaporation material, with both ends extending out as electrode connection zones. When an electric current passes through tungsten boat, it leverages the excellent resistive heating characteristics of tungsten to heat up rapidly, thereby driving the high-temperature material evaporation process.
Advantages of CTIA's Tungsten Boat
(1) Excellent High-Temperature Stability: With a tungsten melting point as high as 3,422°C, tungsten boat can operate stably for long periods above 1,800°C without softening or deforming, easily adapting to heavy-duty vacuum evaporation environments.
(2) High Purity and Low Contamination: Featuring a tungsten density of approximately 19.25 g/cm³ and an extremely low vapor pressure, the material exhibits minimal volatilization at elevated temperatures, effectively mitigating thin-film contamination risks.
(3) Superior Electrical and Thermal Conductivity: Fast thermal response and uniform heat distribution help boost overall evaporation efficiency and consistency.
(4) High Dimensional Stability: Due to a low coefficient of thermal expansion, tungsten boat undergoes minimal deformation during high-temperature cycles, keeping its structural framework completely stable.
(5) Corrosion Resistance and Extended Lifespan: Highly resistant to erosion by most molten metals, making it ideal for long-term vacuum operations.
How Does Tungsten Boat Work?
Tungsten boat is widely used as a key thermal evaporation carrier in the vacuum evaporation coating process. After being energized, tungsten boat converts electrical energy into thermal energy, causing the metal material (such as aluminum, silver, gold, etc.) loaded in the slot to rapidly reach the evaporation temperature, escape in the form of atoms or molecules in a high vacuum environment, and deposit uniformly on the surface of the substrate to form a dense, smooth, and well-adhered functional film.
What Are Applications of CTIA's Tungsten Boat?
(1) Semiconductor Coating: Utilized for metallization film deposition, achieving high-purity metal evaporation and uniform film formation in high-vacuum environments.
(2) LED Chip Manufacturing: Used in electrode material and functional thin-film deposition to enhance device conductivity and stability.
(3) Solar Cell Thin-Film Preparation: Applied in fabricating metal electrodes and thin-film layers to maximize photoelectric conversion efficiency and structural uniformity.
(4) Optical Coating: Applied to the surfaces of lenses and optical components to deliver anti-reflective, reflective, or protective functionalities.
(5) Vacuum Metallurgy: Used for high-purity metal evaporation and refining, upgrading material purity and batch stability.
(6) Scientific Research Experiments: Deployed in material evaporation and thin-film research studies to satisfy small-batch, high-precision processing demands.
Specifications of CTIA's Tungsten Boat
The specifications of CTIA's tungsten boat are detailed in the picture below:
CTIA GROUP has been deeply rooted in tungsten boat manufacturing for over 30 years, specializing in structural engineering and parameter optimization tailored to specific equipment thermal fields and process environments. By strictly controlling material purity and machining precision, the boats are ensured to maintain a stable thermal field and reliable structure under intense heat, which ultimately optimizes evaporation efficiency and film uniformity. CTIA delivers customized tungsten boat solutions with end-to-end quality control from raw materials to finished goods, guaranteeing long-term reliability in high-temperature and high-vacuum settings.
For any inquiry, please contact tungsten boat manufacturer: CTIA GROUP
Email: sales@chinatungsten.com
Tel: 0086 592 5129696 / 0086 592 5129595
Website: www.tungsten.com.cn
WeChat:
More info>>