I-Aluminium oxide, eyaziwa nangokuthi i-alumina, iyikhemikhali eyakhiwe nge-aluminium nomoya-mpilo, enefomula ethi Al₂O₃. Le nto eguquguqukayo iyinto emhlophe, ecwebezelayo edlala indima ebalulekile ezimbonini ezahlukahlukene ngenxa yezakhiwo zayo ezihlukile.
Esinye sezici ezibaluleke kakhulu ze-aluminium oxide ukuqina kwayo okungavamile. Iklelisa ku-9 esikalini se-Mohs, okuyenza ibe enye yezinto zokwakha ezinzima kakhulu ezitholakalayo. Lobu bunzima benza i-aluminium oxide ibe i-abrasive ekahle, evame ukusetshenziswa kuma-sandpaper, amasondo okugaya, namathuluzi okusika. Ukuqina kwayo kuqinisekisa ukuthi ingakwazi ukumelana nezicelo eziqinile, okuyenza ibe yinto ekhethwayo ekukhiqizeni nasekwakheni.
Ngaphezu kokuqina kwayo, i-aluminium oxide nayo yaziwa ngezici zayo ezinhle kakhulu zokushisa nokushisa kagesi. Lokhu kuyenza ibe yinto ebalulekile embonini ye-elekthronikhi, lapho isetshenziswa khona njenge-insulator kuma-capacitor nezinye izinto zikagesi. Ngaphezu kwalokho, indawo yayo yokuncibilika ephezulu (cishe i-2050 ° C noma 3722 ° F) iyivumela ukuthi isetshenziswe ezindaweni ezishisa kakhulu, njengezinto eziphikisayo eziko naseziko.
I-Aluminium oxide nayo isetshenziswa kabanzi ekukhiqizeni insimbi ye-aluminium ngenqubo ye-Bayer, lapho i-bauxite ore icwengwa ukuze kukhishwe i-alumina. Le nqubo ibalulekile embonini ye-aluminium, njengoba ihlinzeka ngezinto ezingavuthiwe ezidingekayo ekukhiqizeni imikhiqizo ye-aluminiyamu engasindi futhi engagqwali.
Ngaphezu kwalokho, i-aluminium oxide inezinhlelo zokusebenza emkhakheni wezitsha zobumba, lapho isetshenziselwa khona ukwakha izinto ezithuthukisiwe ze-ceramic ezisetshenziswa ezinhlelweni ezihlukahlukene zobuchwepheshe obuphezulu, okuhlanganisa i-aerospace kanye namadivayisi we-biomedical. I-biocompatibility yayo iyenza ifanelekele ukusetshenziswa ekufakweni kwamazinyo nama-prosthetics.
Sengiphetha, i-aluminium oxide iyinhlanganisela enezici eziningi enezinhlobonhlobo zezinhlelo zokusebenza kuzo zonke izimboni ezahlukahlukene. Izici zayo eziyingqayizivele, ezihlanganisa ukuqina, ukuzinza kwe-thermal, kanye nokufakwa kukagesi, kuyenza ibe impahla ebalulekile kubuchwepheshe besimanje kanye nezinqubo zokukhiqiza. Njengoba izimboni ziqhubeka nokuthuthuka, ukubaluleka kwe-aluminium oxide kungenzeka kukhule, kuqinise indima yayo ekusungulweni nasekuthuthukisweni.
Isikhathi sokuthumela: Apr-01-2025
