Wide Material Selection: Capable of manufacturing refractory metal crucibles that cannot be produced via traditional casting methods.
High Purity and Performance: The entire process avoids impurity introduction; particularly when sintering is conducted in a vacuum or protective atmosphere, products with extremely high purity and uniform structure can be obtained.
Near-Net Shape: After sintering, the product is very close to the final dimensions, requiring minimal subsequent machining and saving materials.
Capability for Complex Shapes: Through mold design, crucibles with relatively complex shapes can be produced.
Crucibles manufactured via this method are mainly used in extremely harsh environments:
Crystal Growth: Used as crucibles in growth furnaces for sapphire crystals (LED substrates) and semiconductor single crystals (e.g., silicon, gallium arsenide), typically made of tungsten or molybdenum.
Vacuum Melting: Used for melting high-purity active metals (e.g., titanium, zirconium) or precious metals (e.g., gold, platinum), usually made of tungsten or molybdenum.
Semiconductor Industry: Employed as boats or containers in processes such as diffusion and CVD, requiring high purity and thermal shock resistance.
Laboratory Research: Utilized in high-temperature chemical analysis, material synthesis, and other applications.
In summary, "formed, pressed, and sintered" is an advanced manufacturing process and an indispensable technology for producing high-performance crucibles made of special materials.
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