I-Alumina Ceramic: Ukusebenza Okuhle Kakhulu Ngokuqina Kwe-Mohs 9

I-Alumina ceramic iyinto yezimboni esebenza kahle kakhulu eyaziwa ngokuqina kwayo kwe-Mohs okungu-9. Lesi sici senza kube ukukhetha okuhle kokusetshenziswa okunzima, ikakhulukazi ngaphansi kwezimo zokuguguleka, ukugqwala, kanye namazinga okushisa aphezulu. Lesi sihloko sihlola imvelaphi yangempela yokuqina kwayo okuphezulu kanye nokusebenza okuhle kakhulu okubangelwa yilokhu.

Ubulukhuni obukhulu be-alumina ceramic buvela esakhiweni sayo esiyingqayizivele sekristalu kanye nokubopha kwamakhemikhali. Ingxenye yayo eyinhloko, i-α-alumina (α-Al₂O₃), isebenzisa isakhiwo se-corundum esakhiwe ama-ion e-oxygen ne-aluminium ahlanganiswe eduze ahlanganiswe ukusebenzisana okunamandla kwe-ionic kanye ne-covalent. Lokhu kubopha kunikeza amandla aphezulu e-lattice, okuvumela ukuthi izinto zikwazi ukumelana nokuguqulwa kwepulasitiki kanye nokuqhekeka ngaphansi kokucindezeleka kwangaphandle. Ngaphezu kwalokho, izinto zokusetshenziswa ezihlanzekile kakhulu kanye namasu athuthukile okuhlanza asusa amaphutha amancane, okuthuthukisa ubuningi kanye nobunzima.

Ubulukhuni obuphezulu buhumusha ngqo ukusebenza okuvelele. Ukumelana kwayo nokuguguleka okungavamile kwenza ukuthi isetshenziswe kabanzi ezinhlelweni zokuphatha amalahle ezitshalweni zamandla ezishisayo, imishini yokususa uthuli kanye nemishini yokushisa ezitshalweni zensimbi, amapayipi okuhambisa i-ore ezimayini, izinhlelo zokugaya ukudla okuluhlaza kanye ne-clinker ezitshalweni zesamente, kanye nemishini yokuhambisa impuphu embonini yamakhemikhali, okwenza iphumelele kakhulu kunezinsimbi zendabuko empilweni yokusebenza. Ngaphezu kwalokho, le nto ibonisa ukumelana okuhle kakhulu nokugqwala kwamakhemikhali, imelana nama-acid aqinile, ama-alkali, kanye nezinyibilikisi eziphilayo. Ngaphansi kwamazinga okushisa aphezulu, i-alumina ceramic igcina izakhiwo eziqinile zemishini namakhemikhali, isebenza ngokuthembeka ngaphezu kuka-1600°C. Ngaphezu kwalokho, ubulukhuni obuphezulu bufaka isandla ekufakweni kukagesi okuhle kakhulu kanye nokuqhuba ukushisa okuphansi, okwenza ifaneleke kumadivayisi kagesi kanye nezingxenye zokuphatha ukushisa.

Ngokufigqiwe,i-alumina ceramic, ngokuqina kwayo kwe-Mohs okungu-9, idlala indima engenakuphikwa emikhakheni yezimboni nezobuchwepheshe. Ukumelana kwayo nokugqwala okuphezulu, ukuzinza kokushisa okuphezulu, kanye nezakhiwo zokuvikela ugesi kuyenza ibe yinto ebalulekile ekukhiqizeni okuthuthukile kanye nobuchwepheshe obusha. Njengoba amasu okucubungula eqhubeka nokukhula, kulindeleke ukuthi amathuba okusebenzisa i-alumina ceramic akhule kakhulu.