Material of Boron Nitride Ceramics

Processing of Boron Nitride Ceramics

Thermal Management

Excellent electrical insulation and thermal conductivity make BN very useful as a heat sink in high-power electronic applications. Its properties compare favorably with beryllium oxide, aluminum oxide, and other electronic packaging materials, and are easier machinable to desired shapes and sizes.
High Temperature Environments

Temperature stability and excellent resistance to thermal shock make BN the ideal material in the toughest high-temperature environments such as equipment for plasma arc welding, diffusion source wafers, and semiconductor crystal growth equipment & processing.
Molten Metal Handling

BN is inorganic, inert, nonreactive with halide salts and reagents, and is not wet by most molten metals and slags. These characteristics, combined with low thermal expansion, make it ideal for interface materials used in various molten metal processes.

Properties	Unit	UHB	HB	BC	BMS	BMA	BSC	BMZ	BAN	BSN
Main Composition	–	BN>99.7%	BN>99%	BN>97.5%	BN+SiO2	BN+Al2O3	BN+SiC	BN+ZrO2	BN+AlN	BN+Si3N4
Color	–	White	White	White	White Graphite	White Graphite	Greyish-Green	White Graphite	Greyish-Green	Gray Black
Density	g/cm3	1.6	2	2.0~2.1	2.2~2.3	2.25~2.35	2.4~2.5	2.8~2.9	2.8~2.9	2.2~2.3
Three-Point Bending Strength	MPa	18	35	35	65	65	80	90	90	/
Compressive Strength	MPa	45	85	70	145	145	175	220	220	400~500
Thermal Conductivity	W/(m·k)	35	40	32	35	35	45	30	85	20~22
Thermal Expansion Coefficient (20~1000°C)	10-6/K	1.5	1.8	1.6	2	2	2.8	3.5	2.8	/
Max Using Temperature In Atmosphere In Inactive Gas In High Vacuum (Long Time)	°C	900 2100 1800	900 2100 1800	900 2100 1900	900 1750 1750	900 1750 1750	900 1800 1800	900 1800 1800	900 1750 1750	900 1750 1700
Room Temperature Electric Resistivity	Ω·cm	>1014	>1014	>1013	>1013	>1013	>1012	>1012	>1013	/
Typical Application	–	Nitrides Sintering	High Temperature Furnace	High Temperature Furnace	Powder Metallurgy	Powder Metallurgy	Powder Metallurgy	Metal Casting	Powder Metallurgy	Metal Casting
High Temperature Electrical Furnace Components	–	–	√	√	√	√	√	√	√	√
Metal Vaporize Crucible			√	√					√	√
The Container of Metal or Glass Melting	–	√	√	√	√	√	√	√	√	√
The Casting Mould Components of The Precious Metal and Special Alloy.	–	–	–	√	–	√	–	–	√	√
High Temperature Support Part	–	–	–	–	–	√	–	√	√	√
Nozzle and Transport Tube of The Melting Metal	–	–	√	√	√	√	√	√	√	√
Nitrides Sintering (Sagger and Setter Plate)	–	√	–	–	–	–	–	–	–	–

Remark: The value is just for review, different using conditions will have a little difference.