Industrial Ceramics High Purity High Temperature Boron Nitride Crucible

Overview of Boron Nitride Crucible

Boron Nitride Crucible is a kind of high-performance crucible made of boron nitride as the main raw material. Boron Nitride Crucible has the advantages of high-temperature resistance, good thermal stability, strong chemical stability, and good insulation performance. It can maintain good shape and performance under high-temperature environments and is not easy to corrode and oxidize. It can be used in melting metals, growing crystals and other fields to provide stable and reliable containers for related processes, which can help to improve product quality and production efficiency.

Features of Boron Nitride Crucible

Boron Nitride Crucible occupies an important position in the field of high-temperature materials with its excellent performance. Boron Nitride Crucible has excellent high-temperature resistance characteristics, can be up to 2800 ℃ extreme high temperature to maintain stability, is not easy to soften and deform, has thermal conductivity close to the metal aluminum, can achieve rapid and uniform conduction of heat, and effective avoid local overheating.

The chemical stability of boron nitride crucible is extremely excellent, not only highly resistant to molten metal, glass and many acid and alkali solutions, but also stable in vacuum, inert gas or reducing atmosphere environment, with corrosion resistance far exceeding that of common crucibles.

At the same time, Boron Nitride crucibles have good insulating properties, which can effectively isolate the electric current and avoid potential problems caused by electric conduction; high mechanical strength and excellent thermal shock resistance, which can maintain the structural integrity and significantly extend the service life even after frequent and drastic temperature changes, and thus they are widely used in the high-end fields of semiconductor material preparation, precision metal melting, crystal growth, and so on.

Specifications table of Boron Nitride Crucible

Property	Specification
Compound Formula	BN
Molecular Weight	24.82 g/mol
Appearance	Black or white solid
Melting Point	2973 °C
Density	2.1 g/cm³ (h – BN); 3.45 g/cm³ (c – BN)
Solubility in H₂O	Insoluble
Refractive Index	1.8 (h – BN); 2.1 (c – BN)
Electrical Resistivity	10¹³ – 10¹⁵ Ω – m
Max. Working Temperature	2000 °C (under Ar/N₂); 1800 °C (under vacuum); 900 °C (under air)

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Applications of Boron Nitride Crucible

Boron Nitride Crucible plays a key role in many fields due to its excellent performance. In the field of semiconductor manufacturing, due to the high purity and low impurity precipitation characteristics of boron nitride crucible, it can effectively avoid contamination of semiconductor materials, so it is commonly used in the growth of compound semiconductor crystals such as Gallium Arsenide, Indium Phosphide, and so on, to ensure the purity and performance of crystals and to meet the high-end needs of chip manufacturing and so on.

 In the field of metal smelting, a boron nitride crucible can be used for melting high-melting-point metals and active metals, such as titanium, zirconium, beryllium and so on. It can withstand high temperatures and does not react with metal, which prevents the crucible material from mixing into the molten metal and affecting the metal quality, guarantees the purity and quality of smelted metal, and at the same time, prolongs the service life of the crucible and reduces the production cost.

 In the field of optical materials, the chemical stability of boron nitride crucible has significant advantages in the preparation process of optical glass, laser crystal and other materials. It can resist the erosion of glass melt and crystal growth raw materials, ensure the stability of the material composition, and help produce optical products with high transparency and uniformity, which are widely used in the manufacture of optical lenses, lasers and other equipment.

 In addition, boron nitride crucible is also favored in ceramic sintering, powder metallurgy and other fields. Its good thermal stability and thermal shock resistance can make the material heated uniformly in the high-temperature sintering process, avoiding cracking, deformation and other problems caused by temperature changes, improving the product qualification rate, and providing a reliable guarantee for the research and development and production of new materials. With the continuous development of science and technology, the application potential of boron nitride crucibles in more emerging fields will be gradually tapped and expanded.

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 Boron Nitride Crucible

Q1: Why does boron nitride crucible flash off in electron beam evaporation?

The high insulating property of boron nitride leads to charge accumulation after electron beam bombardment and produces a homogeneous repulsion effect. It can be mitigated by controlling the power, the current rising speed, or choosing a low voltage electron gun.

Q2: How to clean and maintain the boron nitride crucible?

Cleaning steps:

Etching cleaning: Use hydrofluoric acid solution (1:10-12) to soften surface impurities, then use ammonia – hydrogen peroxide mixture (1-3:1:5) to further remove deep energy level impurities.

Physical sanding: Sand the inner wall with P600-P1000 sandpaper to remove faults and scratches.

Drying treatment: Drench with methanol and dry at a low temperature (≤120℃) to avoid secondary pollution.

Maintenance points: Avoid mechanical collision, store in a dry environment, and check regularly for cracks or wear.

Q3: How long is the service life of boron nitride crucible?

In the semiconductor field, it can be reused more than 15 times after professional cleaning; in metal melting, the service life depends on the corrosiveness and temperature of the melt, which is generally 50-100 times. In metal melting, the service life depends on the corrosion and temperature of the melt and is generally 50-100 times. Pyrolytic Boron Nitride (PBN) crucibles can be used more than 200 times due to their dense structure.

Q4: What is the price range of Boron Nitride Crucible?

Prices vary by purity, size, and process. Ordinary hexagonal boron nitride crucible (e.g., 20ml) costs about $200-500 per unit, pyrolytic boron nitride (PBN) crucibles (e.g., 135mm) cost thousands of dollars, and customized products (e.g., large size, special shapes) cost even more.

Q5：Can we customize boron nitride crucible?

Yes, we can. Common customization parameters include size (e.g., diameter 50-300mm), shape (e.g., cylindrical, square), purity (95%-99.9%), and coating (e.g., silicon carbide coating to enhance wear resistance).