Alumina keramyske ringen
Technyske parameters
Operating Limits | Units | Alumina keramyk | Alumina keramyk |
Alumina ynhâld | gewicht% | ≥ 99 | ≥ 95 |
Volume tichtens | g/cm3 | 3.85 | 3.7 |
Hardheid (HRA) | HRA ≥ | 88 | 86 |
Kompressive sterkte | MPa ≥ | 400 | 300 |
Maksimum temperatuer | ℃ | 1500 | 1500 |
Air Tight Test | Pas | Pas | |
Thermal Shock Test | Pas | Pas | |
Koëffisjint fan waarmte útwreiding | ×10-6/℃ | 8.2 | 7.5 |
Dielektryske konstante | εr20℃, 1MHz | 9.2 | 9 |
Dielectric ferlies | tanδ×10-4, 1MHz | 2 | 3 |
Volume Resistivity | Ω·cm 20℃ | 1014 | 1013 |
Puncture sterkte | KV/mm , DC≥ | 20 | 20 |
Acid-resistinsje | mg/cm2 ≤ | 0.7 | 7 |
Alkali-resistant | mg/cm2 ≤ | 0.1 | 0.2 |
Abrasion Resistance | g/cm2 ≤ | 0.1 | 0.2 |
Kompressive sterkte | M Pa ≥ | 2800 | 2500 |
Flexural sterkte | M Pa ≥ | 350 | 200 |
Elastyske modulus | G Pa | 350 | 300 |
Poisson's Ratio | 0.22 | 0.2 | |
Thermyske konduktiviteit | W/m·K (20 ℃) | 25 | 20 |