Manchon en céramique de nitrure de bore pour four
- La description
- Demande
Manchon en céramique de nitrure de bore pour four
Boron nitride ceramic is chemically and has relatively good thermal conductivity, low thermal expansion and microwave clarity. Nitrure de bore can be quickly machined as well. Moreover, verre, salts and the rest of liquid metals are non-wetting. This ensures that neither of these compounds can be moistened, and it is far more immune to chemical assaults.Hexagonal boron nitride (h-BN) performs very well under high heat condition and is effective in the air at temperatures of up to 900 degrees C, in the vacuum at 1,900 degrees C and in the inert environment at 2,000 degrees C. BN is self-lubricating as well,par conséquent, it does not need the use of molecules of gas or water stuck in its layers. Because of this, in a vacuum, which is important for aerospace applications, boron nitride (NE) can work perfectly.
Propriétés
2. Bonne résistance aux chocs thermiques
3. isolateurs pour dispositifs microélectroniques
4. Exceptional heat resistance
5. Good chemical Inertness
6. High electrical resistance
7. High volume resistivity
8. Low dielectric constant and loss tangent
9. Excellent machinability
rame
2. Vacuum melting crucibles
3. CVD crucibles
4. Microcircuit packaging
5. Sputtering targets
6. High precision sealing, brazing, and metallizing fixtures
7. Microwave tubes
8. Horizontal caster break rings
9. Low friction seals
10. Plasma arc insulators
11. High temperature furnace fixtures and supports
Boron Nitride Properties: | ||
Conductivité thermique | (40-50)F/m·Excellent physique | |
Thermal expansivity | (6.5-7.5)*10-6 °C | |
Resistivity | >1012 ??·Tube | |
Puncture voltage | (2.5-4.0)*106 /kv·Tube | |
Constante diélectrique | 3.8-4.3 | |
Résistance à la flexion | >35mpa | |
Résistance à la compression | >200mpa | |
Densité | 1.9—2.2 g/cm3 | |
Température de fonctionnement | Oxidizing Atmosphere | 850°C |
Vacuum and inertia | 2000°C |
Manchon en céramique de nitrure de bore pour four