Tungsten Evaporation Boats
Overview
Tungsten Evaporation Boats are high-temperature, boat-shaped containers made of high-purity tungsten. They are used in vacuum coating equipment to hold and heat metals or compounds, causing them to evaporate and then deposit as films on substrates. They are key consumables in industries such as semiconductors, optics, and high-temperature processing. As a non-ferrous metal supplier with over 20 years of experience, FANMETAL also offers popular tungsten products such as tungsten wire, tungsten rods, tungsten plates, tungsten alloy weights, and carbide cutters.
Characteristics
It is usually made of tungsten sheet by cutting, bending, welding, riveting, and polishing under high temperature and pressure.
Small power, fast heating speed, no need for a water cooling system, and also with automatic removal of carbon accumulation technology.
High melting point, stable chemical properties, high tensile strength, good plasticity, and long service life.
It is necessary to pay attention to regular maintenance to avoid serious deformation affected by working temperature, to affects the application effect.
Dimension
|
Grade |
207-525 |
|
Purity |
≥99.95% |
|
Length |
50mm-100mm |
|
Width |
5mm-25mm |
| Thickness | 0.2-0.5mm |
| Groove Height | 2.4-3mm |
| Weight/pc | 4-15g |
|
Density |
19.2g/cm3 |
|
Melting Point |
3410 °C |
|
Surface |
Polished, Bright, Chemical Cleaning |
|
Type |
Stamping, Folding, Welding, Riveting, and other types. |
|
Standard |
ASTM, AISI, GB |
|
Certification |
ISO9001 |
Application
1. Vacuum Coating Technology
When it is necessary to deposit a metal film (such as aluminium, silver, or gold) onto the surface of a substrate (such as glass, metal, or plastic), the metal material to be evaporated is placed in tungsten evaporation boats. The boats are then heated electrically, utilising tungsten's high melting point to cause the metal material to evaporate under heat, forming vapour that condenses and deposits onto the substrate surface, thereby completing the coating process. Application scenarios include optical lens coating (to enhance light transmittance or reflectivity), decorative coating (e.g., surface beautification of furniture or jewellery), and functional coating (e.g., conductive layers for semiconductor devices).
2. Electronic industry sector
Electron tube manufacturing: Used to heat the cathode or other components, ensuring normal operation of the electron tube under high-temperature conditions.
Semiconductor industry: Used as heating components or containers for wafers, participating in processes such as doping and annealing, without causing contamination to the wafers.
3. High-Temperature Experimentation and Research Field
Tungsten boats are commonly used in high-temperature material research, such as testing the melting and evaporation properties of materials, or conducting high-temperature chemical reaction experiments under inert gas protection. Due to tungsten's ability to withstand extremely high temperatures and its relatively stable chemical properties at high temperatures, it also serves as an ideal container for simulating extreme environments, widely applied in research experiments across disciplines such as materials science, physics, and chemistry.
4. Metallurgy and Metal Processing Field
In the smelting or purification of certain special metals, tungsten boats can serve as containers for holding small amounts of high-purity metals or alloys, enabling high-temperature processing to minimise impurity contamination. For precision casting or forming processes involving low-melting-point metals, tungsten boats can also be used as moulds or heating carriers to ensure processing accuracy.
Process
① High-purity tungsten powder is cold-pressed through a mold to form a boat-like blank, which is then sintered at high temperature.
② The sintered tungsten blank is forged or rolled at high temperature, using the mold's shape to plastically deform the tungsten sheet, forming the basic outline of the boat.
③ When the tungsten boat has special features (such as grooves, through-holes, or irregular edges), machining is required using lathes, milling machines, grinders, and other equipment.
④ Annealing in a vacuum or inert gas environment eliminates internal stresses and improves plasticity and stability.
⑤ Electropolishing or mechanical grinding further refines the surface, reducing roughness and improving surface finish.
Pictures
Video
Why choose us
Full-cycle customer service
We provide multi-language support (English, German, Japanese, etc.) and respond to inquiries 24/7. We provide after-sales guidance (such as usage precautions and maintenance cycles) and promise quick returns and exchanges for quality issues. We also regularly visit customers to collect usage feedback, optimize products, and establish long-term cooperative relationships.
Strong custom processing capabilities
We possess high-precision machining capabilities (such as CNC lathes and laser cutting) to ensure dimensional tolerances and meet the assembly requirements of different equipment. We also support customization of complex shapes and quickly respond to customers' non-standard drawing requirements.
Strict quality inspection process
We establish standardized production processes (e.g., ISO9001 quality management systems) and ensure consistent performance across each batch through comprehensive inspections (e.g., crack-free appearance, surface roughness Ra ≤ 0.8 μm). We also provide lifespan test data to reduce trial-and-error costs for our customers.
High delivery efficiency
We optimize production cycles (e.g., standard specifications delivered within 25 days) and leverage international logistics resources (e.g., partnerships with DHL and FedEx) to provide door-to-door service and shorten delivery cycles. For urgent orders, we can utilize air freight channels to ensure uninterrupted production lines.
Case
Tungsten Evaporation Boats, High Purity W Boat To Spain
In early August, FANMETAL, a reputable supplier of non-ferrous metal exports, completed an order for Tungsten Metal Boats for Evaporation with a Spanish customer. This order highlights the company's expertise and further expands its cooperation with the European market. During production, the company strictly adheres to international quality management system standards, from raw material selection to meticulous control of every production step, and rigorous finished product testing. This ensures that each finished product possesses superior quality and reliable performance, fully meeting the stringent quality standards of the Spanish customer. The Spanish customer representative expressed their deep satisfaction with the high-quality products and services provided. The FANMETAL team demonstrated an efficient and responsible approach during the collaboration, resolving many practical issues for them. This collaboration not only met their current project needs but also laid a solid foundation for future collaboration.
Product qualification
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