Intuthuko Entsha Ekukhiqizweni kwe-α-Al2O3 Ehlanzekile Kakhulu: Intuthuko Esayensini Yezinto Ezibonakalayo

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Ekuthuthukisweni okuphawulekayo emkhakheni wesayensi yezinto ezibonakalayo, abacwaningi benze intuthuko ekukhiqizweni kwe-α-Al2O3 (i-alpha-alumina) emsulwa kakhulu, into eyaziwa ngezakhiwo zayo ezihlukile kanye nezinhlelo zokusebenza ezibanzi. Lokhu kuza ngemuva kwezimangalo zangaphambilini zika-Amrute et al. embikweni wabo ka-2019, owathi azikho izindlela ezikhona ezingakhiqiza i-α-Al2O3 enokuhlanzeka okuphezulu kanye nezindawo ezingaphezulu kwemingcele ethile. Okutholakele kwabo kwaphakamisa ukukhathazeka mayelana nokulinganiselwa kwamasu okukhiqiza amanje kanye nemiphumela yezimboni ezithembele kule nto ebalulekile.

I-Alpha-alumina uhlobo lwe-aluminium oxide oluthandwa kakhulu ngenxa yokuqina kwayo, ukuzinza kokushisa, kanye nezakhiwo zokuvikela ugesi. Isetshenziswa kabanzi ezinhlotsheni ezahlukene zokusebenza, kufaka phakathi izinto zobumba, izinto zokubhula, kanye ne-substrate kumadivayisi kagesi. Isidingo se-α-Al2O3 ehlanzekile kakhulu besilokhu sikhula, ikakhulukazi emikhakheni ye-elekthronikhi kanye nezinto zobumba ezithuthukisiwe, lapho ukungcola kungathinta kakhulu ukusebenza nokuthembeka.

Umbiko ka-2019 ka-Amrute nabanye ugcizelele izinselele abacwaningi nabakhiqizi ababhekene nazo ekufinyeleleni amazinga okuhlanzeka okufiswayo kanye nezici zendawo engaphezulu. Baphawule ukuthi izindlela zendabuko, njengezinqubo ze-sol-gel kanye nokuhlanganiswa kwe-hydrothermal, zivame ukuholela ezintweni ezingafiki ezingeni eliphezulu ezidingekayo ekusetshenzisweni okuseqophelweni eliphezulu. Lo mkhawulo ube yisithiyo emisha kanye nentuthuko ezimbonini eziningana zobuchwepheshe obuphezulu.

Kodwa-ke, intuthuko yakamuva isiqalile ukubhekana nalezi zinselele. Umzamo wokucwaninga ngokubambisana ohilela ososayensi abavela ezikhungweni eziningana ezihamba phambili uholele ekuthuthukisweni kwendlela entsha yokuhlanganisa ehlanganisa amasu athuthukile ukukhiqiza i-α-Al2O3 emsulwa kakhulu nezindawo ezingaphezulu ezithuthukisiwe kakhulu. Le ndlela entsha isebenzisa inhlanganisela yokuhlanganisa okusizwa yi-microwave kanye nezinqubo zokulawula i-calcination, okuvumela ukulawula okungcono izakhiwo zezinto.

Abacwaningi babike ukuthi indlela yabo ayigcinanga nje ngokufinyelela amazinga aphezulu okuhlanzeka kodwa futhi yaholela ku-α-Al2O3 enezindawo ezingaphezulu kwalezo ezibikwe ngaphambilini ezincwadini. Lokhu kuphumelela kunamandla okuvula izindlela ezintsha zokusebenzisa i-α-Al2O3 ezisetshenziswayo ezahlukahlukene, ikakhulukazi emkhakheni we-elekthronikhi, lapho isidingo sezinto zokusebenza okuphezulu sikhula khona.

Ngaphezu kokusetshenziswa kwayo kuma-elekthronikhi, i-α-Al2O3 ehlanzekile kakhulu nayo ibalulekile ekukhiqizweni kwezinto zobumba ezithuthukisiwe, ezisetshenziswa ezimbonini ezahlukahlukene, kufaka phakathi izindiza, izimoto, kanye nezokwelapha. Amandla okukhiqiza i-α-Al2O3 enezakhiwo ezithuthukisiwe angaholela ekuthuthukisweni kwezinto ezintsha ezilula, eziqinile, futhi ezimelana nokuguguleka nokugqwala.

Imiphumela yalolu cwaningo idlulela ngale kokukhiqizwa kwezinto ezibonakalayo kuphela. Amandla okudala i-α-Al2O3 ehlanzekile kakhulu enezindawo ezingaphezulu ezithuthukisiwe angaholela nasekuthuthukisweni kwe-catalysis kanye nezicelo zemvelo. Isibonelo, i-α-Al2O3 ivame ukusetshenziswa njengesisekelo se-catalyst ekusabeleni kwamakhemikhali, futhi ukuthuthukisa izakhiwo zayo kungathuthukisa ukusebenza kahle kanye nokusebenza kahle kwezinqubo ezahlukahlukene ze-catalytic.

Ngaphezu kwalokho, indlela entsha yokwenza izinto ingavula indlela yokucwaninga okwengeziwe ngezinye izigaba ze-aluminium oxide kanye nokusetshenziswa kwazo okungenzeka. Njengoba abacwaningi beqhubeka nokuhlola izakhiwo kanye nokuziphatha kwalezi zinto, kunesithakazelo esikhulayo ekusetshenzisweni kwazo ekugcinweni kwamandla, ekulungisweni kwemvelo, ngisho nasekuthuthukisweni kwamabhethri esizukulwane esilandelayo.

Okutholakele kulolu cwaningo lwakamuva kushicilelwe ephephabhukwini lesayensi yezinto zokwakha elihamba phambili, lapho kudonsele khona ukunaka okuvela emikhakheni yezemfundo neyezimboni. Ochwepheshe kulo mkhakha badumise lo msebenzi njengesinyathelo esibalulekile sokuqhubekela phambili ekunqobeni imikhawulo ebonwe ngu-Amrute et al. futhi baveze ithemba ngekusasa lokukhiqizwa kwe-α-Al2O3.

Njengoba isidingo sezinto zokusebenza okuphezulu siqhubeka nokukhula, ikhono lokukhiqiza i-α-Al2O3 ehlanzekile kakhulu enezakhiwo ezithuthukisiwe lizobaluleka kakhulu. Lokhu kuphumelela akugcini nje ngokubhekana nezinselele eziqokonyiswe ocwaningweni lwangaphambilini kodwa futhi kubeka isisekelo sezinto ezintsha ezengeziwe kwisayensi yezinto ezibonakalayo. Ukubambisana phakathi kwabacwaningi kanye nababambiqhaza embonini kuzobaluleka ekuhumusheni lokhu okutholakele kube yizicelo ezisebenzayo ezingazuzisa imikhakha eminingi.

Ekuphetheni, intuthuko yakamuva ekukhiqizweni kwe-α-Al2O3 emsulwa kakhulu imelela ingqophamlando ebalulekile kwisayensi yezinto ezibonakalayo. Ngokunqoba izinselele ezibonwe ezifundweni zangaphambilini, abacwaningi bavule amathuba amasha okusetshenziswa kwale nto eguquguqukayo ezinhlotsheni ezahlukene zobuchwepheshe obuphezulu. Njengoba insimu iqhubeka nokukhula, kusobala ukuthi ikusasa le-α-Al2O3 kanye nezinto eziphuma kuyo lithembisa kakhulu ukusungula izinto ezintsha kanye nentuthuko emikhakheni eminingi.