Advantage
BN (boron nitride) is a ceramic with excellent lubricity, high thermal conductivity, thermal shock resistance, low thermal expansion, and chemical stability. It has many similarities with graphite and is also called white graphite.
On the other hand, it is a ceramic that has high electrical insulation properties despite graphite being dielectric.
They are used for glass manufacturing jigs, metal melting crucibles, injection nozzles, electrical insulation parts, and semiconductor manufacturing components.
Table of Physical Properties
| Product group | BN | |
|---|---|---|
|
BN purity (%) |
99.4 | |
|
Specific Gravity (g/cm3) |
1.96 |
bending strength (MPa) |
35 |
|
Thermal conductivity (W/mk) |
50 | |
|
Coefficient of Thermal Expansion RT～1000℃ |
-1×10-6/℃ | |
|
Maximum Service Temperature (℃) |
In Oxidizing Atmosphere | 900 |
| In Inert Atmosphere | 2300 | |
| In Vacuum | 2100 | |
| Purpose |
EB Evaporation Coating Hearth Liner Boat for deposition materials Crucible for dissolution Sleeve for high-temperature furnace Pipe for vacuum systems High-temperature nozzle Guardianship Electrode cap Support tube Tip ring |
|