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High Thermal Conductivity Boron Nitride Ceramic Crucible
High Thermal Conductivity Boron Nitride Ceramic Crucible
Supplier Info
[China Supplier]
Contact Person : Mr. Xiao Aaron
Tel : 86-533-8180355
Fax : 86-533-8161095
Product Detail
1 High Thermal Conductivity Ceramics Crucibles 2 No.1 manufacturer in china 3 made to order crucible 4 fast delivery 5 SGS

High Thermal Conductivity Boron Nitride Ceramic Crucible

Resistivity(normal temperature):  300-2000μΩ.cm

evaporation rate(1450°C):  0.4-0.5g/min.cm2

working temperature:  <1850°C

heat conductivity(normal temperature/1450°C) :  >100/40W/mk

coefficient of thermal expansion(1450°C) :  (4-6)x10-6k

hot bending intensity(normal temperature):  >150mpa

packing:   vacuumize

 

 

 BN crucible and graphite crucible compared:

BN crystal structure there is no electrons in free,it is an insulator and have high melting point. Almost all of the molten metal were tested chemical reaction.

BN is thermostability, The operating temperature up to 2800°C in neutral or N2 .While the graphite operating temperature is far blew to the temperature of BN. The graphite will be produced carbonized under high temperature and high pressure.

The thermal conductivity of BN does not change with temperature and changes in theramal conductivity of graphite is relatively large.

The life of BN crucible is far greater than the graphite crucible.

Boron nitride crucible is produced by boron nitride block which is sintered with boron nitride powder according to the customer requirements. It is used for melting aluminum, zinc and other alloying, instead of graphite crucible.  The characteristics are as follows:

1: Chemical stability, non-reactive with the metal which is dissolved and the purity of alloys will be increased.

2: There is good oxidation resistance, higher than the graphite material 400-500 °C, up to 900 °C.

3: Long service life.

 

 

 

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