Ceramic Pyrolytic Boron Nitride/LEC PBN Crucible

Insulating and high melting point

High operating tem (  2800°C )

High thermal conductivity

Long life services

Boron Nitride (BN) is a white, low porosity refractory material with physical and mechanical properties similar to Graphite. However, unlike Graphite, Boron Nitride has high thermal conductivity and good thermal shock performance. The most common formulation of Boron Nitride contains boric oxide, which can cause Boron Nitride to absorb moisture, resulting in swelling and property degradation.

Type	99BN	CBN	ABN	ZBN
Main Content	BN>99%	BN>98.5%	BN+AlN	BN+ZrO2
Binder	B2O3	CaB2O6	ALBO3	B2O3
Density    (g/cm3)	1.95-2.0	2.0-2.1	2.6	2.95
Flexural Strength    (Mpa)	30	100	200	200
Compressive Strength    (Mpa)	100	280	350	380
Electrical Resistivity    (ohm.cm)	>10^14	>10^13	>10^14	>10^12
Max. Working Temp.    (°C) air	900	900	900	1000
Max. Working Temp.    (°C) inert gas	2400	2400	2100	1800
Max. Working Temp.    (°C) vacuum	2200	2200	1900	1800
Thermal Conductivity    (W/m.K)	20	35	50	30
Expansion Coefficient  25 - 1000 °C (10^-6/K)	1.5	2	4.5	2.5