Chemical Properties Of Performance PBN
Performance PBN is non-toxic, non-wetting and inert to nearly
all other compounds. It will not react with acids, alkalies,
organic solvents, molten metals or graphite. Performance PBN
is extremely pure. Bulk impurity levels are less than 100 parts
per million with metallic impurities less than 10 parts per
million.
Summary
of Chemical Purity Data
| PROPERTY |
VALUE |
| Non Toxic |
|
| Non Porous |
|
| Non Wetting |
|
| Total Impurities |
<100
ppm |
Metallic
Impurities
Typical Elements |
|
| Ca |
< 1 ppm |
| Al |
< 1 ppm |
| Mg |
< 1 ppm |
| Ti |
< 1 ppm |
| Cu |
< 1 ppm |
| Si |
< 5 ppm |
| Total Metallic |
< 10 ppm |
Total Carbon
(by LECO WR-12) |
< 100 ppm |
Oxidation
Rate
Standard Air @700°C |
1.8 x 10-5
mg/cm2•min |
Oxidation
Rate
Standard Air @900°C |
3.8 x 10-4
mg/cm2•min |
Oxidation
Rate
Standard Air @1200°C |
1.6 x 10-2
mg/cm2•min |
Outgassing
Total System Pressure
1300° C, System Base
Pressure 1 x 10-10 Torr |
<1 x
10-10 Torr |
Summary
of Electrical Properties
| PROPERTY |
VALUE |
Resistivity
"a" and "c"Directions @25°C |
1 x 1015
ohm•cm |
Resistivity
"a" Direction @1000°C |
3 x 107
ohm•cm |
Resistivity
"a" Direction @1500°C |
1 x 104
ohm•cm |
Resistivity
"c" Direction @1000°C |
5 x 109
ohm•cm |
Resistivity
"c" Direction @1500°C |
3 x 105
ohm•cm |
Dielectric
Strength
"c" Direction @25°C |
2 x 105
VDC/mm |
Dielectric
Constant @ 8GHz
"a" Direction @25°C |
4.97 |
Dielectric
Constant @ 8GHz
"a" Direction @1200°C |
5.07 |
Dielectric
Constant @ 8GHz
"c" Direction @25°C |
3.67 |
Dielectric
Constant @ 8GHz
"c" Direction @1200°C |
3.75 |
Loss Tangent
"a" and "c"Directions, @25°C to 600°C
1KHz to 12 GHz |
< 9 x 10-4 |
Loss Tangent
"a" and "c"Directions, @1200°C, 12
GHz |
.001 |
Properties of Performance PBN
Physical
Thermal
Chemical / Electrical
|
