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Boron Nitride Nozzle, BN Nozzle

Boron Nitride Nozzle, BN Nozzle

Boron nitride nozzle is a type of ceramic nozzle made from boron nitride (BN), a high-performance material with excellent thermal and chemical properties. Boron nitride nozzles are often used in applications where high temperature and corrosive environments are involved.

Boron nitride is a chemical compound that is made up of equal parts of boron and nitrogen atoms. It has a unique crystal structure that makes it an excellent thermal conductor, but also provides it with high electrical resistance and chemical stability. As a result, boron nitride is often used in high-temperature applications, such as furnace linings, thermal insulation, and protective coatings.

Boron nitride nozzles are commonly used in applications such as metal casting and powder metallurgy. They are able to withstand high temperatures and are resistant to chemical attack, making them ideal for use in harsh environments. In addition, boron nitride nozzles have excellent thermal shock resistance, which allows them to withstand rapid temperature changes without cracking or deforming.

Boron nitride nozzles are available in various shapes and sizes to fit different applications. They can be used for precision dispensing of liquids, as well as for shaping and directing streams of molten metal or abrasive powders. Their high thermal conductivity and resistance to thermal shock make them ideal for use in applications that involve rapid heating and cooling cycles.

Boron Nitride Ceramics Specification

CG Material production formulations are developed to address the varied application problems in which ceramic components are commonly used. Many industrial applications push the envelope on specific requirements leading to the development of new formulations to successfully address them.

Item No. Description Purity Lot Size
CG-NI05-98 Boron Nitride Powder
Particle Size: 3 µm, 200 mesh or 325mesh
BN > 98 %,
B2O3 < 0.6%,
Ca < 0.015%,
Si < 0.12%
100 kg
CG-NI05-99 Boron Nitride Powder
Particle Size: 3 µm, 200 mesh or 325mesh
BN > 99 %,
B2O3 < 0.4%,
Ca < 0.01%,
Si < 0.10%
100 kg

Comparison of Boron Nitride Ceramics

Compositions BN>98% BN+SiC+ZrO2 BN+AIN
Binder B2O3 / AlBO3
Density 2.1-2.2 g/cm3 2.3-3.0 g/cm3 2.5-2.6 g/cm3
25°C Volume Resistivity >1013 Ω·cm >1012 Ω·cm >1014 Ω·cm
Max. Service Temp. (°C)
Inert Gas;
High Vacuum










Flexural Strength 75 Mpa 100 Mpa 130 Mpa
Compressive Strength 100 Mpa 300 Mpa 250 Mpa
Coefficient of Thermal Expansion
2.0 x 10–6/K 4.0 x 10–6/K 4.5 x 10–6/K
Thermal Conductivity 30 W/mK 40 W/mK 60 W/mK


Boron Nitride Nozzle Specifications

Material Description Availability
BN99 Hot pressed at high temperature (1900℃).
Excellent corrosion resistance and thermal conductivity. Limited wear resistance
Self-bonded and high purity (>99%)

Machinable Blanks

Finished Parts

ZSBN BN-45%, Zr2O3 45% Finished Parts


Boron Nitride Nozzle Applications

-Electric insulators in vacuum system
-Boron Nitride components for PVD, MOCVD, MBE system.
-Nozzles for nonferrous metals metallurgy industry
-Spacers for glass melting
-Insulators for high temperature furnace


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