Alumina zadothi ndi mtundu wa alumina (Al2O3) monga chuma chachikulu zadothi, panopa ndi chimodzi mwa ziwiya zadothi wamba wapadera, angagwiritsidwe ntchito kwambiri chatekinoloje ndi kudula-m'mphepete mafakitale, monga microelectronics, nyukiliya reactors, Azamlengalenga, maginito. kutulutsa mphamvu zamadzimadzi, fupa lochita kupanga ndi zolumikizira zopangira ndi zina, mwa kukondera ndi chikondi cha anthu.
Zida za aluminiyamu za ceramic zili ndi zotsatirazi:
1, kuuma kwa zoumba za alumina ndizokwera kwambiri, kukana bwino kuvala.
2, zoumba za alumina zimakhala ndi kukana kwa dzimbiri ndi golide wosungunuka.
3, alumina ceramic zinthu zili ndi kutchinjiriza kwambiri, kutayika kwafupipafupi kumakhala kochepa koma mawonekedwe abwino kwambiri otchinjiriza.
4, alumina ceramic zinthu zili ndi mawonekedwe a kukana kutentha, kocheperako pang'ono pakukulitsa matenthedwe, mphamvu yayikulu yamakina ndi matenthedwe abwino.
5, kukana kuvala kwa alumina ceramics ndikwabwino, koma kuuma kwake ndi kofanana ndi corundum, ndipo kukana kwa Mohs hardness level 9 ndikofanana ndi kazitsulo zolimba kwambiri.
6, aluminiyamu zadothi ali ndi makhalidwe osayaka, dzimbiri, osati zosavuta kuwononga, zomwe ndi zinthu zina organic ndi zitsulo zipangizo sizingafanane ndi ntchito yabwino.
| Magawo aukadaulo | ||
| Ntchito | Chigawo | Nambala yamtengo wapatali |
| Zakuthupi | / | Al2O3 ＞99.5% |
| Mtundu | / | White, Njovu |
| Kuchulukana | g/cm3 | 3.92 |
| Flexural Mphamvu | MPa | 350 |
| Compressive Mphamvu | MPa | 2,450 |
| Young's Modulus | GPA | 360 |
| Mphamvu Zamphamvu | MPa m1/2 | 4-5 |
| Weibull Coefficient | m | 10 |
| Vickers Kuuma | HV 0.5 | 1,800 |
| (Thermal Expansion Coefficient) | 1n-5k-1 | 8.2 |
| Thermal Conductivity | W/mK | 30 |
| Thermal Shock Stability | △T°C | 220 |
| Kutentha Kwambiri Kugwiritsa Ntchito | °C | 1,600 |
| 20 ° C Kukana kwa Voliyumu | Ωcm pa | > 1015 |
| Mphamvu ya Dielectric | kV/mm | 17 |
| Dielectric Constant | ndi | 9.8 |
