I-Alumina ceramic yinto yemizi-mveliso esebenza kakhulu eyaziwa ngokuba nobunzima bayo be-Mohs obuyi-9. Le propati iyenza ibe lukhetho olufanelekileyo lokusetyenziswa ngokungxama, ngakumbi phantsi kweemeko zokukrala, ukugqwala, kunye namaqondo obushushu aphezulu. Eli nqaku liphonononga imvelaphi yobunzima bayo obuphezulu kunye nokusebenza kwayo okugqwesileyo okubangelwa yiyo.
Ubunzima obukhulu be-alumina ceramic buvela kwisakhiwo sayo sekristale esikhethekileyo kunye nokubophelelana kweekhemikhali. Icandelo layo eliphambili, i-α-alumina (α-Al₂O₃), lisebenzisa isakhiwo se-corundum esine-ions ze-oksijini kunye ne-aluminium ezihlanganiswe ngokusondeleyo ezidityaniswe yi-ionic kunye ne-covalent interactions enamandla. Olu bonding lunika amandla aphezulu e-lattice, okuvumela ukuba izinto zikwazi ukumelana nokuguqulwa kweplastiki kunye nokuqhekeka phantsi koxinzelelo lwangaphandle. Ngaphezu koko, izinto eziluhlaza ezicocekileyo kakhulu kunye neendlela eziphambili zokusila zisusa iziphene ezincinci, ziphucula uxinano kunye nobunzima ngokubanzi.
Ukuqina okuphezulu kuthetha ngokuthe ngqo ukusebenza okugqwesileyo. Ukumelana kwayo nokuguguleka okugqwesileyo kwenza ukuba isetyenziswe kakhulu kwiinkqubo zokuphatha amalahle kwizityalo zamandla obushushu, izixhobo zokususa uthuli kunye nezixhobo zokususa uthuli kwimizi-mveliso yentsimbi, imibhobho yokuhambisa i-ore kwimigodi, iinkqubo zokugaya umgubo oluhlaza kunye ne-clinker kwizityalo zesamente, kunye nezixhobo zokuhambisa umgubo kwishishini leekhemikhali, zisebenza ngcono kuneentsimbi zemveli kubomi benkonzo. Ukongeza, le nto ibonisa ukumelana nokugqwala kweekhemikhali okugqwesileyo, ukumelana nee-asidi ezinamandla, ii-alkalis, kunye nezinyibilikisi zendalo. Phantsi kwamaqondo obushushu aphezulu, i-alumina ceramic igcina iipropati ezizinzileyo zoomatshini kunye neekhemikhali, isebenza ngokuthembekileyo ngaphezulu kwe-1600°C. Ngaphezu koko, ubunzima obuphezulu bunegalelo ekugqumeni umbane okugqwesileyo kunye nokuqhuba ubushushu okuphantsi, okwenza ukuba ifaneleke kwizixhobo ze-elektroniki kunye nezixhobo zolawulo lobushushu.
Isishwankathelo,i-alumina ceramic, enobunzima bayo be-Mohs obuyi-9, idlala indima engenakutshintshwa kwiinkalo zoshishino nezobuchwepheshe. Ukumelana kwayo nokugqwala okuphezulu, ukuzinza kwayo kumaqondo obushushu aphezulu, kunye neempawu zayo zokufakelwa kombane kuyenza ibe yinto ebalulekileyo kwimveliso ephucukileyo kunye nobuchwepheshe obutsha. Njengoko iindlela zokucubungula ziqhubeka nokutshintsha, kulindeleke ukuba amathuba okusetyenziswa kwe-alumina ceramic akhule ngakumbi.
Ixesha leposi: Okthobha-28-2025