99.95% W Tungsten Thermal Evaporation Boat High Melting Point
Thermal Evaporation Boat Application:
Suitable for sintering boats in precision ceramics and cemented
carbide industry.
Surface Treatment of Thermal Evaporation Boat :
Black surface, as machined
Alkali washing surface, by chemically cleaning to remove all the
lubricants and oxides.
Ground surface, by centerless grinding for assurance of precise
dimensions
Parameters
Products Name | 99.95% W Tungsten Thermal Evaporation Boat High Melting Point |
Size | Customized according to customer needs |
Material | pure tungsten |
Grade | W1 |
Density | 19.2g/cm3 |
Surface | polished |
Application | Evaporation boat |
Atomic number | 74 |
CAS number | 7440-33-7 |
Atomic mass | 183.84 [g/mol] |
Melting point | 3420 °C |
Boiling point | 5555 °C |
Density at 20 °C | 19.25 [g/cm3] |
Crystal structure | Body-centered cubic |
Coefficient of linear thermal expansion at 20 °C | 4.4 × 10-6 [m/(mK)] |
Thermal conductivity at 20 °C | 164 [W/(mK)] |
Specific heat at 20 °C | 0.13 [J/(gK)] |
Electrical conductivity at 20 °C | 18.2 × 106 [S/m] |
Specific electrical resistance at 20 °C | 0.055 [(Ωmm2)/m] |
Application
1. Metallizing, Electron-beam Spraying, sintering annealing in
reducing atmosphere in electronics.
2. Military and light industries.
3. Evaporate small lengths of wire or evaporate materials.
4. A tungsten boat is ideal for use in small evaporation systems.
5. Tungsten boat sources are used for the vacuum evaporation of
materials.
