Alumina seramiiki bụ ụdị alumina (Al2O3) dị ka ihe bụ isi seramiiki, bụ ugbu a otu n'ime ihe ndị a na-ahụkarị ceramik pụrụ iche, enwere ike iji ya mee ihe na teknụzụ dị elu na nnukwu ụlọ ọrụ, dị ka microelectronics, ndị na-ebugharị nuklia, ikuku, magnetik. ike mmiri mmiri, ọkpụkpụ artificial na nkwonkwo aka na akụkụ ndị ọzọ, site na ihu ọma na ịhụnanya ndị mmadụ.
Ngwa seramiiki alumina nwere uru ndị a:
1, ike nke alumina ceramics dị oke elu, ezigbo mgbochi iyi.
2, seramiki alumina nwere nguzogide corrosion kemịkalụ na ihe ọla edo gbazere.
3, alumina seramiiki ihe nwere ihe mkpuchi dị mma, ọnwụ ugboro ugboro dị ntakịrị ma ọ dị mma njirimara mkpuchi elu ugboro ugboro.
4, alumina seramiiki ihe nwere njirimara nke nguzogide okpomọkụ, obere ọnụọgụ nke mgbasawanye thermal, nnukwu ike n'ibu na ezigbo ọkụ ọkụ.
5, nkwụsi ike nke alumina ceramics dị mma, mana isi ike bụ otu ihe ahụ nke corundum, na nguzogide nke Mohs hardness level 9 dị ka nke alloys superhard.
6, alumina ceramics nwere njirimara nke na-enweghị combustible, nchara, adịghị mfe imebi, nke bụ ihe ndị ọzọ organic na metal ihe enweghị ike dakọtara na ndị magburu onwe arụmọrụ.
| Nka nka | ||
| Ihe oru ngo | Nkeji | Ọnụọgụ ọnụọgụgụ |
| Ihe onwunwe | / | Al2O3 ：99.5% |
| Agba | / | White, Ivory |
| Njupụta | g/cm3 | 3.92 |
| Ike Flexural | MPa | 350 |
| Ike mkpakọ | MPa | 2,450 |
| Modul nke Young | GPA | 360 |
| Mmetụta Mmetụta | MPa m1/2 | 4-5 |
| Weibull ọnụ ala | m | 10 |
| Vickers ike ike | HV 0.5 | 1,800 |
| (ọnụọgụ Mgbasawanye okpomọkụ) | 1n-5k-1 | 8.2 |
| Nrụpụta okpomọkụ | W/mK | 30 |
| Thermal Shock kwụsie ike | △T°C | 220 |
| Okpomọkụ ojiji kacha | Celsius C | 1,600 |
| 20°C Mgbochi olu | Ωcm | > 1015 |
| Ike Dielectric | kV/mm | 17 |
| Dielectric Constant | εr | 9.8 |
