Aluminum nitride ceramic crucible

Aluminum nitride ceramic crucible is a high-performance container made of aluminum nitride (AlN) ceramic material.

main features
High thermal conductivity: The thermal conductivity of aluminum nitride ceramics is as high as 170-220 W/m · K, second only to silicon carbide and diamond. It can quickly conduct heat in high temperature environments, reduce thermal stress, and improve thermal efficiency.
High temperature resistance: Its melting point is about 2200 ° C, suitable for use in extreme high temperature environments.
Chemical stability: Aluminum nitride ceramics have good chemical stability, excellent corrosion resistance, and are suitable for various chemical environments.
High strength and low density: Combining high strength and lightweight characteristics, it performs outstandingly in application scenarios that require lightweight.

application
Aluminum nitride ceramic crucibles are widely used in the following fields due to their excellent performance:
High temperature melting:
Used for melting metals and alloys, suitable for scenarios in the metallurgical industry that require high temperature stability and chemical corrosiveness.
Chemical reaction:
In the chemical industry, it is used for high-temperature chemical reactions and the treatment of corrosive media.
Laboratory instruments:
Commonly used in high-temperature experiments and sample melting in laboratories to ensure the safety and stability of experiments.
Electronic packaging:
As a heat dissipation substrate material, aluminum nitride ceramics are used in electronic packaging to solve chip heat dissipation problems and improve the reliability and stability of electronic devices.
Aerospace:
Used for manufacturing high temperature and high thermal conductivity components, such as engine components and thermal management systems.
medical apparatus and instruments:
Due to its biocompatibility, it can be used to manufacture surgical tools and implants.

Customized description
The customized demand for aluminum nitride ceramic crucibles mainly revolves around its manufacturing process and performance optimization:
3.1 Manufacturing process
Powder preparation:
The purity, particle size, and oxygen content of aluminum nitride powder directly affect the thermal conductivity of the final product. Common preparation methods include carbon thermal reduction, direct nitridation, and chemical vapor deposition.
Forming and sintering:
The forming process of aluminum nitride ceramic crucible includes dry pressing, injection molding, etc. The sintering process is usually carried out under nitrogen protection, using techniques such as pressureless sintering, microwave sintering, or spark plasma sintering (SPS).
machining:
Due to the high hardness of aluminum nitride ceramics, superhard tools (such as diamond tools) and optimized processing parameters (such as small feed rates and high speeds) are required during the machining process to ensure accuracy and surface quality.
Post processing:
Including chemical mechanical polishing (CMP), magneto rheological polishing (MRF) and other processes, used to improve surface quality and dimensional accuracy.
3.2 Customized Parameters
Size and shape: Different specifications of crucibles can be customized according to customer needs, including diameter, height, and special shapes.
Surface treatment: Surface metallization (such as active metal brazing) or coating treatment can be performed to adapt to specific application scenarios.
Performance optimization: By adjusting sintering aids and sintering temperature, optimize properties such as thermal conductivity, strength, and density.

Aluminum nitride ceramic crucibles are widely used in high-temperature melting, chemical reactions, electronic packaging, and other fields due to their excellent properties such as high thermal conductivity, high temperature resistance, and chemical stability. Its customized manufacturing requires a combination of powder preparation, molding, sintering, and mechanical processing techniques to meet the requirements of different industries for size, performance, and surface quality. This material has become an important choice in high-end industries and research fields due to its technological advantages.