Alumina zoumba ndi mtundu wa aluminiyamu (Al2O3) monga chuma chachikulu zadothi, panopa ndi chimodzi mwa zinthu zadothi wamba wapadera, akhoza ankagwiritsa ntchito 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 ndikokwera 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 ndi kwabwino, koma kuuma kwake ndi kofanana ndi kwa corundum, ndipo kukana kuvala kwa Mohs hardness level 9 ndikofanana ndi aloyi olimba kwambiri.
6, zoumba za aluminiyamu zili ndi mawonekedwe osayaka, dzimbiri, osavuta kuwononga, omwe ndi zinthu zina zakuthupi ndi zitsulo sizingafanane ndi magwiridwe antchito abwino kwambiri.
| 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 |
