General Introduction of Boron Nitride Crucible
A boron nitride crucible is a type of high-performance crucible made from boron nitride as the primary raw material. It possesses numerous excellent characteristics, including high-temperature resistance, good thermal stability, strong chemical stability, and excellent insulation performance. In a high-temperature environment, the boron nitride crucible maintains its good shape and performance, resisting corrosion and oxidation. It can be used in metal melting, crystal growth and other fields to provide stable and reliable containers for related processes, which helps to improve product quality and production efficiency.
boron nitride crucible
Features of Boron Nitride Crucible
High-Temperature Resistance: The boron nitride crucible exhibits excellent high-temperature resistance, remaining stable at extremely high temperatures of up to 2800℃, and is resistant to softening and deformation. Its thermal conductivity is close to that of metallic aluminum, which enables rapid and uniform heat conduction and effectively avoids local overheating phenomena.
High chemical stability: The crucibles are highly resistant to molten metals, glass and a wide range of acid and alkali solutions. It is also stable in a vacuum, inert gas, or reducing atmosphere, and its corrosion resistance is significantly higher than that of ordinary 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
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Applications of Boron Nitride Crucible
Semiconductor manufacturing field: Due to the high purity and low impurity precipitation characteristics of boron nitride crucible, semiconductor materials can be effectively prevented from being contaminated. It is commonly used to grow compound semiconductor crystals such as gallium arsenide and indium phosphide to ensure the purity and performance of the crystals and to meet the high-end needs of chip manufacturing.
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, and beryllium. It can withstand high temperatures and does not react with metal, which prevents the crucible material from mixing into the molten metal and affecting its quality. This guarantees the purity and quality of the smelted metal, while also prolonging the service life of the crucible and reducing production costs.
Optical material field: In the preparation process of optical glass, laser crystal and other materials, the chemical stability of boron nitride crucible has a significant advantage. It can resist the erosion of glass melt and crystal growth materials, ensuring the stability of material composition, and helps produce optical products with high transparency and good uniformity, which are widely used in the manufacture of optical lenses and laser equipment.
Other fields: Boron nitride crucibles are also favored in ceramic sintering, powder metallurgy, and other fields. Its good thermal stability and thermal shock resistance can make the material uniformly heated during the high-temperature sintering process, avoiding cracking, deformation, and other problems caused by temperature changes, thereby improving the product qualification rate and providing a reliable guarantee for the research, 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
Luoyang Tongrun Nano Technology Co. Ltd. (TRUNNANO) is a trusted global chemical material supplier & manufacturer with over 12-year-experience in providing super high-quality chemicals and nanomaterials, including boride powder, nitride powder, graphite powder, ceramic products, 3D printing powder, etc.
The company has a professional technical department and Quality Supervision Department, a well-equipped laboratory, and equipped with advanced testing equipment and after-sales customer service center.
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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).
