Performance
Outstanding corrosion and wear resistance, withstands corrosion from stainless steel, copper, aluminum, iron-silicon alloys, iron-nickel alloys, and others.
With a maximum operating temperature of 1750℃, it boasts a long service life.
Remarkable thermal shock resistance, enduring instant, repeated scouring from high-temperature alloy solutions without cracking or deformation.
As boron nitride is a machinable ceramic material, we can craft it to your specifications within approximately 2 weeks based on the provided drawings. Please click ‘inquiry’ to send us a message and, if needed, email a drawing.
Boron nitride nozzles used in the production of gas-atomized powders:
Gas-atomized powder-making involves the conversion of molten metal or alloy into fine powder particles by rapidly solidifying them with a high-velocity gas stream. Boron nitride nozzles play a crucial role in this process by directing the gas flow and controlling the atomization of the molten material.
Here’s a breakdown of the application:
Gas Flow Control: Boron nitride nozzles are designed to efficiently direct the flow of the gas used for atomization. They ensure a uniform and high-velocity gas stream, which is essential for breaking up the molten metal into fine droplets.
Thermal Stability: Boron nitride’s excellent thermal stability allows the nozzle to withstand the high temperatures involved in the gas-atomization process without deforming or degrading. This ensures consistent performance and product quality over multiple production cycles.
Chemical Inertness: Boron nitride is chemically inert, meaning it does not react with the molten metal or the atomization gas. This prevents contamination of the powder with impurities and ensures the purity of the final product.
Wear Resistance: The high hardness of boron nitride provides wear resistance against the abrasive effects of the high-velocity gas stream and the molten metal, prolonging the nozzle’s lifespan and reducing maintenance requirements.
In summary, boron nitride nozzles are integral components in gas-atomized powder making, facilitating efficient atomization, ensuring thermal stability, maintaining chemical purity, and providing wear resistance for prolonged use.
|
Grade |
BN-B |
BN-C |
BN-D |
BN-E |
|
|
Purity (%) |
BN+Zr+Al |
BN+SiC |
BN+Zr |
BN+AlN |
|
|
Color |
Gray white |
Gray-green |
Gray white |
Gray-green |
|
|
Density (g/cm3) |
2.25-2.35 |
2.40-2.50 |
2.80-2.90 |
2.80-2.95 |
|
|
Oxygen content （％） |
－ |
－ |
– |
－ |
|
|
Volume resistivity （Ω・cm） |
>1013 |
>1012 |
>1012 |
>1013 |
|
|
Operating temp |
Air |
≦1000 |
≦1000 |
≦1000 |
≦1000 |
|
Inert gas |
≦1750 |
≦1750 |
≦1800 |
≦1800 |
|
|
Vacuum |
≦1750 |
≦1750 |
≦1800 |
≦1800 |
|
|
Bending strength （MPa) |
65 |
80 |
90 |
90 |
|
|
Coefficient of thermal expansion （10-6/℃） |
2.0 |
2.8 |
3.0 |
2.8 |
|
|
Thermal conductivity （W/m･K） |
30 |
40 |
30 |
85 |
|
● The data listed on this sheet are representative values and not guaranteed values.
● Please confirm the safety of use at your own responsibility.
● Dispose of the product in accordance with the law.
● The contents of this sheet may be updated without prior notice due to new information.
