Ceramic products based on boron nitride (BN)

Boron nitride ceramics

Boron nitride ceramics

Boron Nitride Ceramics

Boron nitride ceramics product (BN)


Boron nitride products are widely used in high temperature hardware.


One of the key characteristics of boron nitride is that it provides to any item more thermal resistance, density and stability. Boron nitride is widely used in heavy industry and for chemicals.


Boron nitride ceramics was widely adopted in aircraft and rocket engineering, machinery and glass melting, chemical industry, energy and metallurgy. Production of high temperature hardware often involves crucibles, insulators and electric vacuum tools of boron nitride.


A unique combination of thermal, physical and chemical characteristics of boron nitride ceramics make it perfect to meet complex needs and tackle the entire range of production challenges.


Application:


  • Crucibles, insulators and high temperature ceramics;
  • High temperature lubricants;
  • Synthesis of extra-soil substances;
  • Production of electric vacuum hardware and semiconductors.


Boron nitride: HEXAGONAL (α) — h-BN, (white graphite, talc-like powder, has a hexagonal crystal structure and semiconductor properties).


Characteristics:


  • Thermal capacity;
  • Non-toxic;
  • Chemical inertness;
  • High dielectric strength;
  • Low dielectric capacity.


We supply heat resistive ceramics based on hexagonal boron nitride (of different shapes and dimensions per Customer’s needs and requirements).

Hot-pressed hexagonal boron nitride (BN)

Composition BN˃99% BN˃98% BN+SiC+ZrO2 BN+AlN
Binder

Self-binding

B2O3

AlBO3

AlBO3

Density, g/cm3

1.9-2.0

2.1-2.2

2.3-3.0

2.5-2.6

Specific resistance (at 25°C), Ω/cm

>1014

˃1013

˃1012

˃1014

Maximal operating temperature, Oxidizer, °С

900

900

900

900

Maximal operating temperature, Inert gas , °С

2300

2000

1700

1700

Maximal operating temperature, High vacuum, °С

1800

1800

1700

1700

Flexural strength, MPa

25

75

100

130

Compressive strength, MPa

100

100

300

250

Thermal expansion coefficient 25-1000°C, 10-6/K

0-2

2.0

4.0

4.5

Thermal conductivity, W/mK

50

30

40

60

 

We produce thermal resistive ceramics based on hexagonal boron nitride of different shapes and dimensions per Customer’s needs and requirements.

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