99% boron nitride crucible
99% boron nitride crucible
pbn
|
Item |
Unit |
||
|
Apparent Density |
g/cm3 |
2.15-2.19 |
|
|
Gas permeability(He) |
cm3/s |
<1*10-10 |
|
|
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(parallel) |
|
Modulus of elasticity |
N/mm2 |
235690 |
|
|
Specific heat capacity |
Cal/g.℃ |
0.371(@200℃) |
0.442(@ 900℃) |
|
Thermal conductivity 200℃ |
W/cm.k |
0.6(parallel) |
0.026(perpendicular) |
|
Thermal conductivity 900℃ |
W/cm.k |
0.4370(parallel) |
0.028(perpendicular) |
|
Dielectric Strength(RT) |
KV/mm |
56 |
|
|
Volume Resistivity |
Cm |
3.11*1011 |
|
BN
|
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 |
100 |
280 |
350 |
380 |
|
Electrical Resistivity(ohm.cm) |
>10^14 |
>10^13 |
>10^14 |
>10^12 |
|
Max.Working Temp.(℃) -air |
900 |
900 |
900 |
1000 |
|
Max.Working Temp.(℃) -insert gas |
2400 |
2400 |
2400 |
1800 |
|
Max.Working Temp.(℃) -vacuum |
2200 |
2200 |
2200 |
1800 |
|
Thermal conductivity (W/m.K) |
20 |
35 |
50 |
30 |
|
Expansion Coefficient 25-1000(10^-6/K) |
1.5 |
2 |
4.5 |
2.5 |
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