The main feature of the special shaped evaporation boat is that its shape and size can be designed according to the specific coating process requirements to improve the evaporation efficiency and coating quality.
Among the materials used to make special shaped evaporation boats, tungsten is a commonly used material. Tungsten has excellent properties such as high melting point, high vapor pressure, and high thermal conductivity, making it very suitable for making special shaped evaporation boats. In addition, there are some other materials that can also be used to make special shaped evaporation boats, such as titanium and molybdenum.
The use of high-purity and high-quality raw materials ensures that the materials have good chemical properties.
◐ The internationally advanced vacuum hot pressing sintering method is adopted to ensure the excellent physical properties of the product.
◐ The sintering process adopts a two-way pressurization method to ensure the consistency of the product volume density.
◐ The digital control of production equipment ensures the stability and consistency of product quality.
◐ The unique process formula and optimized composition structure enhance the evaporation boat's resistance to thermal shock and flexural strength, improve the aluminum liquid spreading ability and evaporation efficiency, enhance the ability to resist aluminum liquid corrosion, and extend the working life.
Special shaped evaporation boat parameter table
|
Resistivity (normal temperature) |
300-2000μΩ·cm |
|
Evaporation rate (1450℃) |
0.4-0.5g/min·cm2 |
|
Operating temperature |
≤ 1850℃ |
|
Thermal conductivity (normal temperature/1450℃) |
＞ 100/40W/mk |
|
Thermal expansion coefficient (1450℃) |
(4-6)×10-6K |
|
Bending strength (normal temperature) |
＞ 150mpa |
|
Package |
Vacuum packaging |
|
category |
Room temperature resistivity |
|
Type-1 |
200-300 |
|
Type-2 |
300-400 |
|
Type-3 |
400-500 |
|
Type-4 |
500-600 |
|
Type-5 |
600-700 |
|
Type-6 |
700-800 |
|
Type-7 |
800-900 |
|
Type-8 |
900-1000 |
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