High Temperature and Corrosion Resistant High Quality Aluminum Nitride Crucible

Overview of Aluminum Nitride Crucible

The aluminum nitride crucible is a high-performance ceramic crucible. It takes aluminum nitride (AlN) as the main raw material and has the advantages of high melting point, high thermal conductivity and low thermal expansion coefficient. It has good chemical stability in high-temperature environments and is not easy to react with molten metal. Commonly used in electronics, metallurgy and other fields, such as semiconductor material melting, metal purification, etc., it can effectively ensure the purity of materials and processing quality, long service life, and is an important high-temperature container in modern industry.

Features of Aluminum Nitride Crucible

Aluminum nitride crucible has many remarkable features. It has a very high melting point and can remain stable at very high temperatures without deformation or damage. At the same time, aluminum nitride crucible has high thermal conductivity, which can conduct heat quickly and uniformly and make the substance inside the crucible more evenly heated, which is conducive to various chemical reactions.

In addition, the thermal expansion coefficient of aluminum nitride crucible is very low, and the dimensional change is very small when the temperature changes, which makes it not easy to produce cracks or damages during repeated heating and cooling and greatly improves the service life.

In terms of chemical stability, the aluminum nitride crucible performs well and does not easy to react with most of the molten metals and chemical substances, which can effectively avoid the mixing of impurities and ensure the purity and quality of the treated materials. These characteristics make the aluminum nitride crucible widely used in many fields, such as electronics, metallurgy, material science, etc., providing reliable container support for various high-temperature processes.

Specifications table of Aluminum Nitride Crucible

Parameter	Specification
Material	High-purity Aluminum Nitride (AlN)
Purity	≥99.5% AlN
Density	3.26 g/cm³ (typical theoretical density)
Melting Point	>2200°C
Thermal Conductivity	170-220 W/m·K (at room temperature)
Coefficient of Thermal Expansion	4.5-5.0 x 10⁻⁶ /°C (20-1000°C)
Dielectric Strength	>10 kV/mm (at 25°C)
Chemical Stability	Chemically inert to most molten metals and non-reactive in inert atmospheres
Operating Temperature Range	Up to 2000°C in inert or reducing atmospheres
Surface Finish	Smooth, polished interior to minimize contamination and ensure uniform heating
Common Sizes	Varies (e.g., 50 ml, 100 ml, 250 ml, custom sizes available)
Applications	Semiconductor material processing, metal melting, high-temperature synthesis, laboratory research
Atmosphere Compatibility	Suitable for inert (e.g., Ar, N₂) and reducing atmospheres; avoid oxidizing atmospheres
Color	White to light gray (typical appearance of AlN ceramics)

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Applications of Aluminum Nitride Crucible

Aluminum nitride crucible plays an important role in many fields with its excellent performance. In the electronics industry, it is widely used in the melting and purification of semiconductor materials. For example, in the preparation of semiconductor materials such as high-purity silicon and germanium, aluminum nitride crucible can withstand high temperatures and remain chemically inert to ensure the purity and quality of the materials so as to meet the needs of high-end applications such as electronic chip manufacturing.

In metallurgy, it can be used for melting some active metals, such as aluminum and magnesium, etc. Its excellent erosion resistance and low coefficient of thermal expansion help to improve the melting efficiency and quality control of metals.

In addition, in material science research, aluminum nitride crucible is commonly used in high-temperature synthesis and sintering experiments, providing reliable experimental conditions for the development of new materials. It is also suitable for some special chemical reaction containers, especially in the need for high temperature and pollution-free environment; aluminum nitride crucible can provide an ideal experimental environment to ensure the accuracy and reliability of the experimental results.

In a word, aluminum nitride crucible is indispensable in modern industry and scientific research due to its unique performance, which provides important material support for the development of many high-tech fields.

Company Profile

RBOSCHCO is a trusted global chemical material supplier & manufacturer with over 12 years of experience in providing super high-quality chemicals and Nanomaterials. The company exports to many countries, such as the USA, Canada, Europe, UAE, South Africa, Tanzania, Kenya, Egypt, Nigeria, Cameroon, Uganda, Turkey, Mexico, Azerbaijan, Belgium, Cyprus, Czech Republic, Brazil, Chile, Argentina, Dubai, Japan, Korea, Vietnam, Thailand, Malaysia, Indonesia, Australia, Germany, France, Italy, Portugal etc. As a leading nanotechnology development manufacturer, RBOSCHCO dominates the market. Our professional work team provides perfect solutions to help improve the efficiency of various industries, create value, and easily cope with various challenges. If you are interested, please send an email to sales1@rboschco.com

Payment Term

T/T, Western Union, Paypal, Credit Card etc.

Shipment Term

By air, by sea, by express, as customers request.

5 FAQs of Aluminum Nitride Crucible

Q1:What is the coefficient of thermal expansion of aluminum nitride crucible?

The thermal expansion coefficient of aluminum nitride crucible is low, about 4.5×10-⁶/°C (20-1000°C), which is close to that of silicon, which makes it not easy to produce thermal stress when the temperature changes and it can withstand rapid cooling and heating conditions.

Q2:What kind of atmosphere is Aluminum Nitride Crucible suitable for?

Aluminum nitride crucibles are suitable for use in protective atmospheres such as vacuum and inert gases (e.g., argon, nitrogen). In these atmospheres, an aluminum nitride crucible can give full play to its excellent performance and avoid oxidation and other problems. When used in air, the temperature should not exceed 1300℃; otherwise, oxidation will occur.

Q3:Can Aluminum Nitride Crucible be in contact with metal?

Aluminum nitride crucible has good compatibility with many metals and is not easy to be infiltrated by metals, such as aluminum, copper, nickel and other metals. Therefore, it is commonly used in the melting and processing of these metals and can effectively prevent the erosion of the crucible by metals.

Q4:What are the advantages of aluminum nitride crucible compared with graphite crucible?

Compared with graphite crucible, aluminum nitride crucible has higher chemical stability and better corrosion resistance. Graphite crucibles are easily oxidized at high temperatures and react easily with some metals, while aluminum nitride crucibles do not have these problems. In addition, aluminum nitride crucibles have a higher purity and do not contaminate the melt material.

Q5:What is the difference between an aluminum nitride crucible and an alumina crucible?

The thermal conductivity of aluminum nitride crucible is several times higher than that of alumina crucible, which can conduct heat more efficiently and improve the heating efficiency. At the same time, the thermal expansion coefficient of aluminum nitride crucible is lower, which has better thermal shock resistance and is not easy to rupture when the temperature changes. In addition, aluminum nitride crucibles are also stronger than alumina crucibles at high temperatures and can withstand greater mechanical stress.