I-Aluminium Oxide Ethuthukisiwe (Al2O3): Ukuvumela Izicelo Zobuchwepheshe Obuphezulu Ngokucophelela Nokuthembeka
Isifinyezo
I-aluminium oxide (Al2O3)I-Alumina, eyaziwa kakhulu ngokuthi i-Alumina, iyinto yobumba eguquguqukayo futhi esebenza kahle kakhulu esetshenziswa kabanzi emikhakheni eminingi ethuthukile ngenxa yamandla ayo ahlukile e-dielectric, ukuzinza kokushisa, ukungangeni kwamakhemikhali, kanye nokuqina komshini. Leli phepha lichaza izakhiwo ezibalulekile, izinhlelo zokusebenza, kanye nemininingwane yobuchwepheshe ye-Alumina ehlanzekile kakhulu, ngokugxila endimeni yayo ebalulekile ekupakisheni kwe-semiconductor kanye nokugqoka kwebhethri le-lithium-ion. Ngaphezu kwalokho, iqokomisa amakhono okukhiqiza nokuhlinzeka nge-UrbanMines Tech., umkhiqizi ohamba phambili waseShayina ozinikele ezinsizakalweni zekhwalithi, zokwenza ngokwezifiso, kanye nezinsizakalo zokuthumela ngaphandle ezithembekile.
1. Isingeniso
I-Alumina akuyona nje into eluhlaza yokukhiqiza i-aluminium; iyitshe lesisekelo lokukhiqiza ubuchwepheshe besimanje obuphezulu. Kusukela kuma-microelectronics kanye nesitoreji samandla kuya kuma-optics, i-catalysis, kanye ne-protective coating, inhlanganisela eyingqayizivele yezakhiwo ze-alumina iyenza ibe yinto ebaluleke kakhulu. Njengoba isidingo esikhulayo se-miniaturization, ukusebenza kahle kwamandla, kanye nokuthembeka okuphezulu ezinhlelweni ze-elekthronikhi nezamandla sikhula, isidingo se-alumina ehlanzekile kakhulu eklanywe kahle asikaze sibe sikhulu kangaka.
2. Izakhiwo kanye Nemininingwane Yezinto Ezibalulekile
I-alumina ehlanzekile kakhulu ihlukaniswa ngesigaba sayo, izinga lobumsulwa, ukusatshalaliswa kosayizi wezinhlayiya, kanye nokuqukethwe kokungcola okulandelekayo, ipharamitha ngayinye iklanyelwe izidingo ezithile zohlelo lokusebenza.
2.1 Ukulawula Ubumsulwa Nokungcola
- Amabanga Okuhlanzeka Okuphezulu: 4N (99.99%), 5N (99.999%), kanye ne-6N (99.9999%) alumina abalulekile ekusetshenzisweni okubucayi njenge-semiconductor encapsulation kanye nezingxenye ze-optical.
- Ukukhishwa Okuphansi Kwe-Alpha-Ray: Kubalulekile ekupakisheni kwe-semiconductor ukuvimbela amaphutha athambile kumadivayisi ememori. Imininingwane ivame ukudinga okuqukethwe kwe-Uranium (U) kanye ne-Thorium (Th) ngaphansi kwe-3 ppb, kanye nokungcola okuncane kwe-Fe, Na, kanye ne-Cl.
- Isibonelo Sokucaciswa:
- Okuqukethwe kwe-Al₂O₃: ≥ 99.7%
- SiO₂: <0.15%, Fe₂O₃: <0.1%, Na₂O: <0.1%
- Umswakama: < 0.1%, Ukulahlekelwa ekushiseni: < 0.1%
2.2 Usayizi Wezinhlayiya kanye Nokwakheka Kwazo
Izinhlelo zokusebenza zisho i-granulometry enembile:
- I-Spherical Alumina: Osayizi be-D50 basukela ku-1 µm kuya ku-45 µm (isb., 2.8 µm, 5.8 µm ukuze kube nobuningi bokupakisha obuhle kuma-semiconductors).
- I-Alumina Engeyona I-Spherical: D50 kusukela ku-1.5–10.5 µm, esetshenziswa ekumbozeni nasezihlanganisweni lapho indawo ethile yobuso kanye nobuningi obuluhlaza kubalulekile khona.
- Indawo Yomphezulu we-BET: Ngokuvamile < 1.5 m²/g yezimbozo ukuqinisekisa ukwakheka nokunamathela okufanele kwe-slurry.
2.3 Isakhiwo Sesigaba Nekristalu
I-alumina ye-alpha-phase (α-Al2O3) iyisimo esizinzile kakhulu ngokwe-thermodynamic, enikeza ubulukhuni obuphezulu, ukuhanjiswa kokushisa, kanye nokufakwa kokushisa kagesi. Ubukhulu bekristalu obungu-2–3 µm buvame ukucaciswa ukuze kuhambisane nokuziphatha kokushiswa kanye nesakhiwo esincane sokugcina.
3. Izicelo Eziyinhloko Ezimbonini Zobuchwepheshe Obuphezulu
3.1 Ukupakishwa kwe-Semiconductor
I-alumina eyindilinga ephansi ye-alpha isetshenziswa njengesigcwalisi kuma-compound epoxy molding (EMCs) ukuthuthukisa ukuhanjiswa kokushisa, ukunciphisa i-coefficient of thermal expansion (CTE), kanye nokuhlinzeka ngokuvikela imisebe. Ukusatshalaliswa kosayizi wezinhlayiya (isb., i-bimodal 2.8 µm kanye ne-5.8 µm) kulungiselelwe ukupakisha okuphezulu kanye ne-viscosity encane.
3.2 Izembozo Zokuhlukanisa Ibhethri le-Lithium-Ion
I-α-alumina emsulwa kakhulu (D50 < 4 µm) isetshenziswa njengesembozo se-ceramic kuma-separator e-polymer. Ithuthukisa ukuzinza kokushisa, ivimbela ukungena kwe-dendrite, futhi ithuthukisa ukumanzika kwe-electrolyte, ngaleyo ndlela yandisa ukuphepha kwebhethri kanye nokuphila komjikelezo. Izinto zixutshwa nezihlanganisi ukuze kwakhiwe i-slurry ezinzile yokwemboza okufanayo.
3.3 Ezinye Izindlela Zokusebenzisa Ezithuthukisiwe
- Ama-Capacitor: Njengesithiyo se-dielectric ngenxa yegebe laso elibanzi lebhendi.
- Ukuhlaziya kanye nokumunca: I-alumina yendawo ephezulu njengokusekelwa kwe-catalyst noma i-desiccant.
- I-Structural Ceramics: Ezimbozweni ezingagugi, ezifakelwe izinto zokwelapha (isb., ezifakelwa esikhundleni sezinqe), kanye nezinhlelo zempi.
- Ukupholisha Nokubhula: I-Ultrafine alumina (i-Diamantine) yokupholisha ngokunemba kuma-optics kanye nokwenza amawashi.
- Ukuvikela Ukushisa Okuphezulu: Njengezingqimba ezimelana nokushisa ezithandweni.
4. Ubuchwepheshe be-UrbanMines: Umlingani Othembekile waseShayina
Njengoba isidingo somhlaba wonke se-alumina ekhethekile sikhula, i-UrbanMines Tech. ivelele njengomhlinzeki othembekile onolwazi olunzulu lobuchwepheshe kanye nendlela egxile kumakhasimende.
4.1 Ubuhle Bokukhiqiza
- Imigqa yethu yokukhiqiza ezinikele e-China ihlonyiselwe ukukhiqiza i-alumina emsulwa kakhulu, ene-alpha ephansi ngokulawula ikhwalithi okuqinile.
- Sinikeza osayizi beqembu abaguquguqukayo—kusukela kumasampula e-R&D kuya ekukhiqizweni okugcwele—okuqinisekisa izikhathi zokulethwa ezimfushane kanye nokunikezwa ngesikhathi esifanele.
4.2 Amandla Okwenza Ngokwezifiso
- Sihlela ubumsulwa, ukusatshalaliswa kosayizi wezinhlayiya, ukuma kwazo (okuyindilinga/okungeyindilinga), kanye namaphrofayili okungcola ukuze kuhlangatshezwane nezidingo zamakhasimende eziqondile.
- Usekelo lobuchwepheshe lunikezwa ukusiza ngokukhetha nokuhlanganisa izinto.
4.3 Ukuthembeka Okuqinisekisiwe kanye Nobuchwepheshe Bokuthumela Ngaphandle
- Njengoba sineminyaka engu-16 yesipiliyoni embonini, sakhe ubudlelwano besikhathi eside; amakhasimende ethu angaphezu kuka-60% abe ngabalingani iminyaka engaphezu kwemi-5.
- Sinawo wonke amalayisense okuthumela ngaphandle adingekayo, kufaka phakathi lawo emikhiqizo ehlobene nomhlaba ongavamile, okuqinisekisa ukuthi izinto zomhlaba wonke zihamba kahle futhi ziyahambisana nemithetho.
4.4 Inzuzo “Yokwenziwa eShayina”
- Uhlelo lwezimboni oluvuthiwe lwaseShayina lunikeza izinzuzo zokuncintisana ekutholeni izinto zokusetshenziswa, ubuchwepheshe bokucubungula obuthuthukisiwe, kanye nokukhiqizwa okungandiswa.
- I-UrbanMines Tech. isebenzisa la mandla ngenkathi inamathela ezindinganisweni zekhwalithi zomhlaba wonke (ISO, RoHS, REACH).
5. Isiphetho
I-aluminium oxide emsulwa kakhulu iyisisusa esibalulekile sokusungula izinto ezintsha kuma-elekthronikhi, isitoreji samandla, kanye ne-ceramics ethuthukisiwe. Ukuhlangabezana nezidingo eziqinile zezinhlelo zokusebenza zanamuhla akudingi nje kuphela isayensi yezinto ezithuthukisiwe kodwa futhi nochungechunge lokuhlinzeka oluthembekile nolusheshayo. I-UrbanMines Tech. ihlanganisa imikhiqizo esebenza kahle kakhulu kanye nokwenza ngokwezifiso okuphendulayo kanye nezinsizakalo zokuthumela ngaphandle ezithembekile, okwenza kube ngumlingani ofanele kumakhasimende omhlaba wonke afuna izixazululo ze-alumina ezisezingeni eliphezulu.
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