Introduction of Aluminum Nitride Crucible
Aluminum Nitride (AlN) Crucibles are high-performance refractory vessels designed for advanced material processing applications requiring superior thermal conductivity, chemical stability, and high-temperature performance. These crucibles are ideal for melting and handling reactive metals, molten salts, and other high-performance materials.
Aluminum Nitride Crucibles
| Parameter |
Value/Range |
| Material |
Aluminum Nitride (AlN) |
| Density |
3.26 g/cm³ |
| Melting Point |
2,450°C |
| Thermal Conductivity |
~170–230 W/m·K |
| Max Operating Temperature |
1,600°C (vacuum/inert gas) |
| Dielectric Constant |
8–10 (1 MHz at room temperature) |
| Thermal Expansion Coefficient |
4.3–4.5×10⁻⁶/K (25–1,600°C) |
| Purity |
>99% |
| Chemical Resistance |
Suitable for molten metals, alkalis, and select acids |
| Wall Thickness |
Customizable based on requirements |
Applications of Aluminum Nitride Crucible
Melting of Reactive Metals: Used for melting aluminum, magnesium, and other reactive metals in aerospace and automotive industries.
Molten Salt Processing: Handles molten salts in chemical processes, batteries, and high-energy storage systems.
Crystal Growth: Supports crucible-based methods for producing high-purity crystals like aluminum nitride wafers.
Semiconductor Manufacturing: Ensures contamination-free processing during wafer production and advanced material synthesis.
Metal Annealing: Provides uniform thermal environments for metal annealing and precision treatments.
Solar Energy Technology: Facilitates processing in molten salt systems for solar power generation.
Research and Development: Used in academic and industrial experiments requiring high-purity environments.
Packing and Storage
The product is in powder form and should be stored in a cool, ventilated place. Avoid inhalation when using it and keep away from open flames, heat sources, etc.
Packing and Storage
Company ProfileQ1: Why are Aluminum Nitride Crucibles ideal for molten metal?
Re: Aluminum Nitride Crucibles are ideal for molten metals due to their chemical resistance and non-reactivity, which ensures that the metals being melted remain pure. Additionally, their thermal conductivity ensures even heat distribution, reducing the risk of thermal stress or uneven melting.
Q2: Can Aluminum Nitride Crucibles be reused?
Re: Yes, under proper handling and maintenance, Aluminum Nitride Crucibles can be reused multiple times. Unlike metal crucibles, which can corrode, AlN crucibles maintain their purity and structural integrity, ensuring long-term use.
Q3: How does the purity of Aluminum Nitride affect crucible performance?
Re: High purity (>99% AlN) ensures that contaminants do not interfere with the processes occurring inside the crucible. Purity is especially critical in industries like semiconductors and metal refining, where even minute impurities can impact quality and performance.
Q4: Are Aluminum Nitride Crucibles safe to use under high temperatures?
Re: Yes, they are designed to operate safely up to 1,600°C in vacuum or inert atmospheres. Their thermal management properties and dimensional stability under extreme conditions make them reliable in high-temperature manufacturing and research applications.
Q5: Are Aluminum Nitride Crucibles suitable for specific molten salts?
Re: Absolutely. Their chemical resistance allows them to be used with molten alkalis or salts suitable for energy storage applications. However, specific salts should be tested since compatibility depends on the thermal and chemical environment.
