
Likarolo tsa letsopa tsa Alumina ke mofuta oa thepa ea letsopa e entsoeng haholo-holo ka alumina e hloekileng haholo (Al ₂ O3), e nang le bothata bo phahameng haholo, khanyetso ea ho tsofala, khanyetso ea mocheso o phahameng le botsitso ba lik'hemik'hale. E sebelisoa haholo masimong a mangata a indasteri 'me hajoale ke thepa ea letsopa ea indasteri e kholo ka ho fetisisa le e sebelisoang haholo ho latela bophahamo ba tlhahiso.
| Ntho | Al₂O₃≥99% | Al₂O₃≥95% | ZrO₂≥94% | |
| 'Mele thepa | Botenya | 3.85 | 3.6 | 5.9 |
| Monyelo oa Metsi % | 0 | 0 | 0 | |
| Mocheso oa ho sila °C | 1690 | 1670 | 1650 | |
| Litšobotsi tsa boleng | Bothata ba HV | 1700 | 1600 | 1400 |
| Matla a ho tenyetseha 4pt | >3500 | >2900 | >11000 | |
| Matla a khatello /cm² | 30000 | 25000 | 25000 | |
| Thermodynamics | Mocheso o phahameng ka ho fetisisa oa tšebeletso °C | 1500 | 1400 | 1600 |
| Tekanyo e sebetsang ea katoloso ea mocheso | 8 | 7.8 | 10 | |
| 10-6/°C | ||||
| 0-1000°C | ||||
| Ho hanyetsa mocheso (°C) | 200 | 220 | 350 | |
| Ho khanna ha mocheso W/mk | 31 | 22 | 3 | |
| Motlakase litšobotsi | Bophahamo ba bophahamo ba modumo Ω.cm | >10^12 | >10^12 | >10^12 |
| Matla a robehang a insulation KT/m | 18 | 16 | 15 | |
| 1MHZ(E) e sa fetoheng ea dielectric | 9.2-10.5 | 9.0-10 | 12.5 | |
| Bolelele(mm) | Bophara(mm) | Bolelele(mm) | Botenya ba lebota (mm) | Bokgoni (cc) |
| 6-200 | 30-150 | 15-190 | >2 | 5-5000 |
1. Ho thatafala ho hoholo le ho hanyetsa ho tsofala
Bothata ba Mohs ba liserami tsa alumina bo phahame ho fihlela boemong ba 9, bo latela daemane feela. Ho hanyetsa ho tsofala: Ho hanyetsa ho tsofala ha eona ho makhetlo a 266 ho feta tšepe ea manganese le makhetlo a 171.5 ho feta tšepe e nang le chromium e ngata.
2. Ho hanyetsa mocheso o phahameng le botsitso ba mocheso
Ho hanyetsa mocheso o phahameng: Sebaka sa ho qhibiliha ha li-ceramic tsa alumina se phahame ho fihlela ho 2050 ℃, 'me se ka boloka ts'ebetso e tsitsitseng mochesong o phahameng oa 2000 ℃. Ho tsitsa ha mocheso: E na le coefficient e tlase ea katoloso ea mocheso 'me e ka boloka botsitso ba sebopeho tlas'a liphetoho tse feteletseng tsa mocheso.
3. Moralo o bobebe Boima:
Botenya ba liserami tsa alumina ke 3.6-3.8g/cm³ feela, e leng bobebe ho feta tšepe ka 50%. Mohlala, ho sebelisa likarolo tsa serami tsa alumina lifofaneng ho ka fokotsa boima ka 30% le ho ntlafatsa katleho ea mafura haholo.
4Ho hanyetsa mafome le thepa ea ho thibela mafome Ho hanyetsa mafome:
Ho hanyetsa hantle haholo li-acid tse matla, li-alkali, le letsoai, ho loketse lik'hemik'hale tsa lik'hemik'hale, li-valve tse thibelang ho bola, jj. Ho thibela ho bola: Ka ho hanyetsa ha ≥ 1 × 10 ¹⁴Ω· cm, ke thepa e ratoang bakeng sa li-substrate tsa lisebelisoa tsa elektroniki tse nang le maqhubu a phahameng.
5. Katleho e phahameng ea litšenyehelo Katleho ea litšenyehelo:
Nako e telele ea bophelo ba eona le litšobotsi tsa tlhokomelo e tlase li fokotsa litšenyehelo tsa nako e telele haholo.