Boron Nitride (BN) Nozzle
We provide standard products & tailor-made products for hot-pressed
boron nitride nozzle. Except for pure BN99 crucible, we also supply
BN composites with silicon carbide, calcium borate, aluminum
nitride and zirconia, to fulfill various of demand for the
customers. Check the boron nitride specifications for our pure BN99
and zirconia composite material ZSBN.
High purity boron nitride nozzles could withstand higher
temperature in vacuum than lower purity boron nitride nozzles.
Although we usually claim the maximum working temperature as 2500C,
there’s record to use our material at 3000+ C. Due to the low
wettability with metals, boron nitride is an ideal material to
handle molten metals, especially for high purity material metal in
vacuum.
Boron Nitride Nozzle Basic Information & Materials
| Material | BN99, ZSBN |
| Molecular Weight | 24.82 |
| Appearance | White |
| Melting Point | 2973 °C |
| Density | 2.1 g/cm3 (h-BN); 3.45 g/cm3 (c-BN) |
| Solubility in H2O | Insoluble |
| Refractive Index | 1.8 (h-BN); 2.1 (c-BN) |
| Electrical Resistivity | 13 to 15 10x Ω-m |
Boron Nitride Materials
| Material | Description |
| BN99 | Hot pressed at high temperature (1900℃).
Excellent corrosion resistance and thermal conductivity. Limited
wear resistance
Self-bonded and high purity (>99%) |
| ZSBN | BN-45%, Zr2O3 45% |
Boron Nitride Nozzle Advantages & Applications:
Boron Nitride ceramic from ZG Industries Ceramics Division can withstand high temperature in the high
vacuum environment, plus it has excellent corrosion resistance and
electrical resistance.
-Low wettability to molten metal
-Relatively high thermal conductivity with low thermal expansion
-Relatively high thermal shock resistance
-Extremely high working temperature with proper inert gas
protection (>3000C has been recorded).
Based on the above properties, Boron Nitride Nozzle is an ideal
choice in a wide range of industries, such as:
-Electric insulators in vacuum system
-Boron Nitride components for PVD, MOCVD, MBE system.
-Nozzles for nonferrous metals metallurgy industry
-Spacers for glass melting
-Insulators for high temperature furnace
Packing
As a ceramic material, boron nitride is quite fragile in a lot of
cases. Our Hot-Pressed Boron Nitride Crucible is carefully handled
to minimize damage during storage and transportation. Suitable
outer boxes and inner cushioning materials are used for BN
products, vacuum packing is also engaged for some of the parts.
