Boron nitride based ceramics are widely used in aircraft and rocket technology, in mechanical engineering and glass industry, in the chemical industry, energy and metallurgy. In the production of high-temperature equipment, crucibles, insulators and electric vacuum devices based on boron nitride are increasingly used.
The unique combination of exceptional thermal, physical and chemical characteristics of boron nitride-based ceramics makes it an ideal material for solving complex problems and achieving a wide range of industrial goals.
Areas of use:
Suggested modifications of boron nitride: HEXOGONAL (α) - h-BN, (white graphite, a talc-like powder, has a hexagonal, graphite-like crystalline structure and has semiconductor properties.
Characteristics:
LLC NPO GKMP delivers a wide range of heat-resistant ceramics based on hexagonal boron nitride (various shapes and sizes, taking into account the requirements and wishes of the customer).
Hot Pressed Boron Nitride (BN)
Sructure
Measure
BN˃99%
BN˃98%
BN+SiC+ZrO2
BN+AlN
Binder
self-binding
B2O3
AlBO3
Density
(g/cm3)
1.9-2.0
2.1-2.2
2.3-3.0
2.5-2.6
Resistivity (at 25 ° C)
(Ω/cm)
>1014
˃1013
˃1012
˃1014
Maximum operating temperature
Oxidizing medium
(°С)
900
Inert gas
2300
2000
1700
2100
High vacuum
1800
1900
Bending strength
(MPа)
25
75
100
130
Compressive strength
300
250
Thermal expansion coefficient 25-1000 ° C
10-6/K
0-2
2.0
4.0
4.5
Thermal conductivity
(V/mK)
50
30
40
60
We supply heat-resistant ceramics based on hexagonal boron nitride of various shapes and sizes, taking into account the requirements and wishes of the customer.
PBN-based products are widely used in high-temperature technology products. One of the most important characteristics of boron nitride is that this substance gives any product heat resistance, density and stability.
PBN-based ceramics products are widely used in aircraft and rocket technology, in mechanical engineering and glass industry, in the chemical industry, energy and metallurgy. In the production of high-temperature equipment, crucibles, insulators and electric vacuum devices based on boron nitride are increasingly used.
Pyrolytic Boron Nitride (PBN) is obtained by gas-phase chemical deposition. Compared to the conventional boron nitride compound, p-BN has a much higher level of purity and a number of advantages.
NPO GKMP LLC supplies a wide range of heat-resistant ceramics based on pyrolytic boron nitride (various shapes and sizes, taking into account the requirements and wishes of the customer).
Pyrolytic boron nitride
Properties
Value
1.95-2.20
Lattice constant
μm
a: 2.504x10-10
c:6.692x10-10
Resistivity
3.11x 1011
Tensile strength (ab)
(Н/mm2)
153.86
c
243.63
ab
197.76
Coefficient of elasticity
235690
200
(W/mК)
a:60
c:2.6
a:43.7
c:2.8
Dielectric strength (at room temperature)
(kV/mm)
56
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