Modrwyau Ceramig Alwmina
Paramedrau Technegol
Terfynau Gweithredu | Unedau | Serameg Alwmina | Serameg Alwmina |
Cynnwys Alwmina | wt% | ≥ 99 | ≥ 95 |
Dwysedd Cyfrol | g /cm3 | 3.85 | 3.7 |
Caledwch (HRA) | HRA ≥ | 88 | 86 |
Cryfder Cywasgol | MPa ≥ | 400 | 300 |
Tymheredd Uchaf | ℃ | 1500 | 1500 |
Prawf Tyn Awyr | Pasio | Pasio | |
Prawf Sioc Thermol | Pasio | Pasio | |
Cyfernod Ehangu Gwres | × 10-6 / ℃ | 8.2 | 7.5 |
Cyson Dielectric | εr20 ℃, 1MHz | 9.2 | 9 |
Colled Dielectric | tanδ×10-4, 1MHz | 2 | 3 |
Gwrthedd Cyfaint | Ω·cm 20 ℃ | 1014 | 1013 |
Cryfder Tylliad | KV/mm, DC≥ | 20 | 20 |
Ymwrthedd asid | mg/cm2 ≤ | 0.7 | 7 |
Alcali-gwrthsefyll | mg/cm2 ≤ | 0.1 | 0.2 |
Ymwrthedd abrasion | g/cm2 ≤ | 0.1 | 0.2 |
Cryfder Cywasgol | M Pa ≥ | 2800 | 2500 |
Cryfder Hyblyg | M Pa ≥ | 350 | 200 |
Modwlws Elastig | G Pa | 350 | 300 |
Cymhareb Poisson | 0.22 | 0.2 | |
Dargludedd Thermol | W/m·K(20℃) | 25 | 20 |