Specifications

LEC PBN Crucibles
1:High oxidation resistance
2:Tensile strength increases with temperature
3:Negligible out gassing

Gallium Arsenide crystal growth in PBN crucibles ensures the purity of your final crystals. Liquid Encapsulated Czochralski (LEC) is one of the methods to grow such crystals.

 

Fu Qiang is able to manufacture many sizes of LEC PBN crucibles upon your request or based on your own specifications. 

 

 

Catalog No	Application	ID(Inch)	H(Inch)	Taper	T(Inch)
FQ300	LEC	3	3	0.7°	0.03
FQ301	LEC	4	4	0.7°	0.035
FQ302	LEC	5	5	0.5°	0.035
FQ303	LEC	6	6	0.5°	0.04
FQ304	LEC	7	7	0.3°	0.04
FQ305	LEC	8	8	0.3°	0.04

 

 

Apparent Density	g/cc	2.15 - 2.19 (crucible)	2.10 - 2.15 (sheet)
Gas permeability (He)	cc/s	<1 x 10e-10
Micro hardness (Knoop)	N/mm²	691.88 (a-b plane)
Tensile strength	N/mm²	153.86 (parallel)
Bending strength	N/mm²	243.63 (parallel)	197.76 (perpendicular)
Modulus of elasticity	N/mm²	235690
Specific heat capacity	cal/g.°C	0.371 (@ 200°C)	0.442 (@ 900°C)
Thermal conductivity 200°C	W/cm.k	0.6 (parallel)	0.026 (perpendicular)
Thermal conductivity 900°C	W/cm.k	0.4370 (parallel)	0.028 (perpendicular)
Dielectric strength (RT)	KV/mm	56
Volume resistivity	ohm.cm	3.11 x 10e13