Boron Nitride Ceramic from Xiamen Unipretec Ceramic Technology Co., Ltd.

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Boron Nitride powder is a white and lubricant powder. By means of hot pressing at high temperature and pressure, Boron Nitride ceramics are produced into a block as big as 480*480mm. BN ceramic is a machinable ceramic that can be easily cut into plates, rods or machined into complex shapes.

Hexagonal Boron Nitride Ceramic provides excellent mechanical, chemical, electrical and thermal properties, so it’s widely used for industrial applications in harsh environment.

Electrical insulated at high temperature
High thermal conductivity
Superior thermal shock resistance
Oxidation and corrosion inert
Corrosion resistant by molten-metals, slags and glass
High temperature resistance
Outstandinglubricating capability
Non-wetted (without oxidation)
High dielectric breakdown strength
Low hardness, easy machining

Boron Nitride Ceramic Introduction

Unipretec produces 5 grades of boron nitride ceramic, BN-1700, BN-2000, BN-2300, BN-2800 and BN-3000.

BN-2000
99% purity boron nitride, it’s the most common used hot-pressed BN material. It’s generally used in applications where high temperature and corrosion resistance capability is required, because it’s resistant up to 2000ºC in inert or vacuum environments, and it’s non-wet by most molten metals. With good thermal conductivity and thermal shock resistance, BN-2000 is recommended for applications such as crucibles of melting metals, high temperature insulation components, high temperature electrode protection tube and insulators, and plasma chambers for hall effect thruster.

BN-1700
99.7% purity boron nitride is the highest purity hBN without any binder added. This material offers extreme high temperature resistance in vacuum furnace, superior thermal shock resistance and exceptional thermal conductivity, it’s suitable for high temperature ceramic manufacturing, particularly for crucibles, sintering setter plate of Aluminum Oxide AlN ceramic manufacturing. BN 99.7% purity material produced by UNIPRETEC has been working for crucibles of sintering AlN ceramic substrates for years with big volume and consistent good quality.

BN-2300
BN-2300 is a composite of boron nitride and alumina matrix. The alumina composite contributes to its better mechanical strength and non-abrading properties. With an added benefit of good thermal conductivity, non-wetting by molten metals and easy machining, BN-2300 is an ideal material for molten metal applications such as metal atomizing nozzles, and side dams for thin strip casting.

BN-2800
Unipretec hexagonal boron nitride grade BN-2800 combines boron nitride with aluminum nitride to get higher thermal conductivity. AlN material also contributes to better mechanical strength. This material has an advantage in applications where high thermal conductivity and high temperature is required.

BN-3000
BN-3000 grade machinable ceramics combine the non-wetting properties of hBN with extremely wear resistance of zirconia material. It also offers high thermal conductivity and superior high temperature strength. All this makes it an excellent choice in molten metal applications, such as continuous casting break rings, nozzles for metal atomization, and side dams for thin strip casting.

Solid Boron Nitride Ceramic Applications