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Boron Nitride Composite BN-SZ Ceramic

Boron Nitride Composite BN-SZ Ceramic

Boron Nitride Composite BN-SZ Ceramic is a type of high-performance ceramic material that is made from a combination of boron nitride (BN) and zirconia (SZ) powders. It is produced through a high-temperature and high-pressure sintering process, resulting in a ceramic material with exceptional thermal and mechanical properties.

BN-SZ ceramic has a unique combination of high thermal conductivity, high electrical insulation, and excellent mechanical strength, making it a highly desirable material for a variety of industrial and electronic applications.

The addition of zirconia to boron nitride creates a composite material with enhanced mechanical strength, increased resistance to thermal shock, and improved fracture toughness. The combination of these properties makes BN-SZ ceramic ideal for use in high-temperature applications, such as heat exchangers, high-temperature furnaces, and electronic packaging.

BN-SZ ceramic is also highly resistant to chemical attack, making it an ideal material for use in harsh environments. Its exceptional electrical insulation properties make it a popular choice for electronic components, high-voltage insulators, and other electrical applications.

BN-SZ ceramic is available in a range of shapes and sizes, including plates, tubes, and custom shapes. Its properties make it a versatile material that is used in industries such as aerospace, semiconductor manufacturing, metallurgy, and automotive manufacturing.

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


Composite Ceramic BN-SZ Specifications 

Grade BN-SZ
Compositions BN+SiC+ZrO2
Density 2.3-3.0 g/cm3
25°C Volume Resistivity >10^12 Ω·cm
Max. Service Temp. (°C) 900 (Oxygen)
1700 (Inert Gas)
1700 (High Vacuum)
Flexural Strength 100 Mpa
Compressive Strength 300 Mpa
Coefficient of Thermal Expansion (25-1000°C) 4.0 10^-6/K
Thermal Conductivity 40 W/mK

Composite Ceramic BN-SZ Applications

• Used as a horizontal continuous casting separation ring
• Used as metallurgical atomization and powder metallurgy atomizing nozzle
• Used as a thin strip continuous casting side sealing board
• Widely used in the contact of various molten metals


We handle our products with care to ensure they remain in their original condition during storage and transportation and to preserve their quality.


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