Boron Nitride Nozzle

Excellent corrosion resistance and thermal conductivity. Limited wear resistance

SKU: HBN-N

Boron Nitride Nozzle, BN Ceramic Nozzles

Boron nitride has excellent high-temperature resistance and corrosion resistance. High-purity boron nitride nozzles can withstand higher temperatures in a vacuum than low-purity BN Nozzles. Due to the low wettability of boron nitride with metals, it is an ideal material for processing molten metals, especially for high-purity material metals in a vacuum.

In recent years, the additive manufacturing industry based on 3D printing technology has developed rapidly, and ceramics are increasingly used in special and complex parts. The basic raw material for metal 3D printing technology is a metal powder with high sphericity and narrow particle size distribution. The basic process for preparing and producing this powder is to melt the metal alloy and flow it through the nozzle. At the nozzle outlet, the molten metal is atomized by the high-pressure airflow and cooled into spherical particles at the same time. Therefore, the nozzle material needs to have properties such as high-temperature resistance, thermal shock resistance, fine processing ability, and resistance to liquid metal corrosion. We provide boron nitride nozzles for 3D printing or powder metallurgy.

Boron Nitride Nozzle Basic Information & Materials

Physical Property
Item	Units	BN99, >99.3%	BN997, >99.7%	BN+ZrO2	BN+SiC	BN+AlN	BN+Si3N4
Color		White	White	White Graphite	Greyish Green	White Graphite	Dark grey
Density	g/cm3	2	1.6	2.25-2.35	2.4-2.5	2.8-2.9	2.2-2.85
Mechanical properties
Mohs hardness		2	2
Bending Strength				115	85	120	150-320
Compressive Strength				225	130	220	380-480
Flexural strength	Mpa	35	20
Thermal properties
Maximum Use Temperature	in Air	900℃	900℃	1000℃	1000℃	1000℃	1000℃
	in Insert	2100℃	2100℃	1800℃	1800℃	1800℃	1800℃
	In Vacuum	1800℃	1800℃	1800℃	1800℃	1800℃	1800℃
Thermal Conductivity(20℃)	W/(m·K)	40	50	20	30	80	40
Thermal Expansion Coefficient(20℃-1000℃)	10^-6/K	2	-0.5	3.5	2.8	2.8	2.7
Electrical properties
RT Resistivity	Ω.cm	>10^14	>10^14	>10^12	>10^12	>10^13	>10^13

Advantages of Boron Nitride Nozzle

-Low wettability with metals

-High-temperature resistance, the extremely high working temperature under appropriate inert gas protection

-Excellent corrosion resistance

-Relatively high thermal shock resistance

Applications

-Powder metallurgy nozzle: Provides a stable jet flow for high-temperature spraying of particles, powders, and coating materials.

-Abrasive nozzles: used in sandblasting equipment, surface treatment, and cleaning applications, can provide long-term stable spraying effects in high-speed, high-pressure, high-concentration abrasive flow.

-Burner nozzles: can be used for spraying and regulating high-temperature burners. Boron nitride ceramic nozzles can provide stable combustion spraying, and improve combustion efficiency and stability.

-Air atomizing nozzles: widely used in the fields of coating, spraying, and atomization, can be used to spray high-temperature spray liquids, powders, and aerosols.

Packing

As a ceramic material, boron nitride is quite fragile in a lot of cases. Our Hot-Pressed Boron Nitride nozzle 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.