Oxide ea Aluminium e Tsoetseng Pele (Al2O3): Ho Nolofatsa Litšebeliso tsa Theknoloji e Phahameng ka ho Nepahala le ho Tšepahala
Kakaretso
Aluminium oxide (Al2O3), e tsejoang haholo e le alumina, ke thepa ea letsopa e feto-fetohang le e sebetsang hantle e sebelisoang haholo liindastering tse ngata tse tsoetseng pele ka lebaka la matla a eona a ikhethang a dielectric, botsitso ba mocheso, ho se sebetse ha lik'hemik'hale le ho thatafala ha mechini. Pampiri ena e hlalosa litšobotsi tsa bohlokoa, lits'ebetso le litlhaloso tsa tekheniki tsa alumina e hloekileng haholo, ka ho tsepamisa maikutlo karolong ea eona ea bohlokoa ho paketeng ea semiconductor le liphahlo tsa betri ea lithium-ion. Ho feta moo, e totobatsa bokhoni ba tlhahiso le phepelo ba UrbanMines Tech., mohlahisi ea ka sehloohong oa Chaena ea ikemiselitseng boleng, ho etsa lintho ka mokhoa o ikhethileng le lits'ebeletso tse tšepahalang tsa ho romela thepa kantle ho naha.
1. Selelekela
Alumina ha se feela thepa e tala bakeng sa tlhahiso ea aluminium; ke lejoe la motheo la tlhahiso ea theknoloji e phahameng ea sejoale-joale. Ho tloha ho li-microelectronics le polokelo ea matla ho ea ho optics, catalysis, le lipeipi tse sireletsang, motsoako o ikhethang oa thepa ea alumina o etsa hore e be ea bohlokoa. Ka tlhoko e ntseng e hola ea miniaturization, ts'ebetso e ntle ea matla, le ts'epo e phahameng lits'ebetsong tsa elektroniki le tsa matla, tlhoko ea alumina e entsoeng ka nepo e se e e-so ka e ba kholo ho feta ena.
2. Thepa le Litlhaloso tsa Thepa
Alumina e hloekileng haholo e arotsoe ka mekhahlelo ea eona, boemo ba bohloeki, kabo ea boholo ba likaroloana, le litaba tsa litšila tse sa bonahaleng, paramethara ka 'ngoe e etselitsoe litlhoko tse itseng tsa ts'ebeliso.
2.1 Taolo ea Bohloeki le Litšila
- Mekhahlelo e Hloekileng ka ho Fetisisa: 4N (99.99%), 5N (99.999%), le 6N (99.9999%) ea alumina li bohlokoa bakeng sa lits'ebetso tse bonolo tse kang semiconductor encapsulation le likarolo tsa optical.
- Phallo e Tlase ea Alpha-Ray: E bohlokoa bakeng sa liphutheloana tsa semiconductor ho thibela liphoso tse bonolo lisebelisoa tsa memori. Litlhaloso hangata li hloka dikahare tsa Uranium (U) le Thorium (Th) tse ka tlase ho 3 ppb, ka litšila tse fokolang tsa Fe, Na, le Cl.
- Mohlala oa Tlhaloso:
- Dikahare tsa Al₂O₃: ≥ 99.7%
- SiO₂: <0.15%, Fe₂O₃: <0.1%, Na₂O: <0.1%
- Mongobo: < 0.1%, Tahlehelo ha ho hotetsoa: < 0.1%
2.2 Boholo ba Likaroloana le Sebopeho
Likopo li laela granulometry e nepahetseng:
- Alumina e chitja: Boholo ba D50 bo tloha ho 1 µm ho isa ho 45 µm (mohlala, 2.8 µm, 5.8 µm bakeng sa bongata bo ntlafalitsoeng ba ho paka ka har'a li-semiconductors).
- Alumina e sa potileng: D50 ho tloha ho 1.5–10.5 µm, e sebediswang ho koaheleng le dikopantseng moo sebaka se itseng sa bokahodimo le botenya bo botala di leng bohlokwa.
- Sebaka sa Bokaholimo ba BET: Ka tloaelo < 1.5 m²/g bakeng sa ho roala ho netefatsa hore ho na le mokhoa o nepahetseng oa ho kopanya le ho khomarela.
2.3 Sebopeho sa Mokhahlelo le Kristale
Alumina ea alpha-phase (α-Al2O3) ke mofuta o tsitsitseng ka ho fetisisa oa thermodynamically, o fanang ka thata e phahameng, conductivity ea mocheso, le insulation ea motlakase. Boholo ba kristale ba 2–3 µm hangata bo hlalosoa bakeng sa boitšoaro bo tsitsitseng ba ho sila le sebopeho sa microstructure sa ho qetela.
3. Likopo tsa Bohlokoa Liindastering tsa Theknoloji e Phahameng
3.1 Sephutheloana sa Semiconductor
Alumina e chitja e nang le alfa e tlase e sebediswa e le setlatsetsi sa ho tlatsa metsoako ya epoxy molding (EMCs) ho ntlafatsa tsamaiso ya mocheso, ho fokotsa coefficient ya katoloso ya mocheso (CTE), le ho fana ka tshireletso ya mahlaseli. Kabo ya boholo ba dikarolwana (mohlala, bimodal 2.8 µm le 5.8 µm) e ntlafaditswe bakeng sa ho paka ka ho fetisisa le ho ba le viscosity e nyane.
3.2 Liaparo tsa ho Arohanya Libetri tsa Lithium-Ion
α-alumina e hloekileng haholo (D50 < 4 µm) e sebelisoa e le sekoahelo sa ceramic holim'a li-polymer apartament. E ntlafatsa botsitso ba mocheso, e thibela ho kenella ha dendrite, 'me e ntlafatsa ho koloba ha electrolyte, ka hona e eketsa polokeho ea betri le bophelo ba potoloho. Thepa e kopantsoe le li-binder ho etsa slurry e tsitsitseng bakeng sa sekoahelo se tšoanang.
3.3 Litšebeliso tse ling tse tsoetseng pele
- Li-capacitor: E le mokoallo oa dielectric ka lebaka la lekhalo la eona le sephara la lebanta.
- Ho Hlakola le ho Kopanya: Alumina e sebakeng se phahameng e le tšehetso ea catalyst kapa desiccant.
- Diseramiki tsa Sebopeho: Dikobong tse sa tsofaleng, di-implant tsa bongaka (mohlala, tse nkelang letheka sebaka), le ditsamaisong tsa dihlomo.
- Ho polisha le ho taboha: Alumina e ntle haholo (Diamantine) bakeng sa ho polisha ka nepo ho optics le ho etsa lioache.
- Ho Sireletsa Mocheso o Phahameng: E le masela a thibelang mocheso ka har'a lionto.
4. UrbanMines Tech.: Molekane ea Tšepahalang ho tsoa Chaena
Ha tlhoko ea lefats'e ea alumina e khethehileng e ntse e hola, UrbanMines Tech. e ikhetha e le mofani oa thepa ea tšepahalang ea nang le boiphihlelo bo tebileng ba tekheniki le mokhoa o shebaneng le bareki.
4.1 Bokgoni ba Tlhahiso
- Mela ea rona ea tlhahiso e inehetseng ka hare ho naha Chaena e hlomelitsoe ho hlahisa alumina e hloekileng haholo, e nang le alpha e tlase ka taolo e tiileng ea boleng.
- Re fana ka boholo bo tenyetsehang ba sehlopha—ho tloha disampoleng tsa R&D ho isa tlhahisong e felletseng—ho netefatsa linako tse kgutshwane tsa ho etella pele le phepelo e tlang ka nako e nepahetseng.
4.2 Bokhoni ba ho iketsetsa
- Re fetola bohloeki, kabo ea boholo ba likaroloana, sebopeho (se chitja/se sa chitja), le liprofaele tsa litšila ho fihlela litlhoko tse nepahetseng tsa bareki.
- Tšehetso ea tekheniki e fanoa ho thusa ka khetho le kopanyo ea thepa.
4.3 Botšepehi bo Pakiloeng le Botsebi ba ho Romela Thepa Linaheng Tse Ling
- Ka boiphihlelo ba lilemo tse 16 indastering, re hahile likamano tsa nako e telele; bareki ba rona ba fetang 60% e bile balekane ka lilemo tse fetang 5.
- Re na le mangolo ohle a hlokahalang a ho romela thepa kantle ho naha, ho kenyeletsoa le a lihlahisoa tse amanang le rare earth, ho netefatsa hore thepa ea machaba e tsamaea hantle ebile e latela melao.
4.4 Molemo oa "E entsoe Chaena"
- Tikoloho ea indasteri e hōlileng ea Chaena e fana ka melemo ea tlholisano mehloling ea thepa e tala, mahlale a tsoetseng pele a ts'ebetso, le tlhahiso e ka atolosoang.
- UrbanMines Tech. e sebelisa matla ana ha ka nako e ts'oanang e latela maemo a boleng a machaba (ISO, RoHS, REACH).
5. Qetello
Aluminium oxide e hloekileng haholo ke sesebelisoa sa bohlokoa sa boqapi ba lisebelisoa tsa elektroniki, polokelo ea matla le li-ceramic tse tsoetseng pele. Ho fihlela litlhoko tse thata tsa lits'ebetso tsa sejoale-joale ha ho hloke feela saense e tsoetseng pele ea thepa empa hape le ketane ea phepelo e tšepahalang le e potlakileng. UrbanMines Tech. e kopanya linyehelo tsa lihlahisoa tse sebetsang hantle le ho iketsetsa ka mokhoa o arabelang le lits'ebeletso tse tšepahalang tsa ho romela thepa kantle ho naha, e leng se etsang hore e be molekane ea loketseng bakeng sa bareki ba lefats'e ba batlang litharollo tsa boleng ba alumina.
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