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What are the uses of Boron Nitride Ceramics?

Nitride Boron can be used in the manufacture of crucibles for smelting semiconductors and metallurgical high-temperature vessels, amorphous strip nozzles, semiconductor heat dissipation insulation parts, high-temperature bearings, thermocouple bushing, and glass forming molds.

Usually produced Boron Nitride is a graphite-type structure, commonly known as white graphite. The other is diamond type. Similar to the principle of transforming graphite into diamond, graphite-type boron nitride can be transformed into diamond-type boron nitride under high temperature (1800℃) and high pressure (800Mpa).

The B-N bond length (156pm) of this boron nitride is similar to the C-C bond length (154pm) of a diamond, and the density is similar to the diamond. The hardness of this boron nitride is similar to diamond, but the heat resistance is better than diamond. It is a new type of superhard material with high-temperature resistance, which is used to make drill bits, grinding tools, and cutting tools.

What are the uses of Boron Nitride Ceramics

What are the uses of Boron Nitride Ceramics

Boron Nitride Material Properties-SU0012

Properties Units UHB HB BC BMS BMA BSC BMZ BAN
Main Composition BN>99.7% BN>99% BN>97.5% BN+AL+SI BN+ZR+AL BN+SIC BN+ZRO2 BN+ALN
Color White White White White
Graphite
White
Graphite
Greyish
Green
White
Graphite
Greyish
Green
Density g/cm3 1.6 2 2.0-2.1 2.2-2.3 2.25-2.35 2.4-2.5 2.8-2.9 2.8-2.9
Three-Point Bending
Strength
MPA 18 35 35.00 65 65 80.00 90 90.00
Compressive Strength MPA 45 85 70.00 145 145 175.00 220 220.00
Thermal Conductivity W/m·k 35 40 32.00 35 35 45.00 30 85.00
Thermal Expansion
Coefficient (20-1000
10-6/K 1.5 1.8 1.60 2 2 2.80 3.5 2.80
Max Using TemperatureIn
Atmosphere
In Inactive Gas
In High Vacuum (Long
Time)
( 900
2100
1800
900
2100
1800
900
2100
1900
900
1750
1750
900
1750
1750
900
1800
1800
900
1800
1800
900
1750
1750
Room Temperature
Electric Resistivity
Ω·cm >1014 >1014 >1013 >1013 >1013 >1012 >1012 >1013
Typical Application: Nitrides
Sintering
High
Temperature
Furance
High
Temperature
Furance
Powder
Metallurgy
Powder
Metallurgy
Powder
Metallurgy
Metal
Casting
Powder
Metallurgy
High Temperature
Electrical Furnace
Components (High
Temperature Insulator
Sleeve Tube etc)
Metal Vaporize Crucible
The Container Of Metal
or Glass Melting
The Casting Mould
Components Of The
Precious Metal And
Special Alloy.
High -Temperature Support
Part
Nozzle And Transport
Tube Of The Melting Metal
Nitrides Sintering

Remark: The value is just for review, different using conditions will have a little difference

 

 

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