Izitsha zobumba ze-alumina zisetshenziswa kabanzi emikhakheni eminingi ngenxa yezinzuzo zazo ezifana nokuqina okuphezulu kanye nokuqina kwamakhemikhali okuqinile. Kodwa-ke, ukubuthaka kwazo kunciphisa ububanzi bokusetshenziswa kwazo. Izitsha zobumba ze-alumina eziqinile zavela futhi zaxazulula ngempumelelo le nkinga.
Izitsha zobumba ze-alumina eziqinileingaqiniswa ngezindlela ezahlukene. Ezivamile zifaka phakathi ukuqinisa i-zirconia, okuthuthukisa kakhulu ukuqina ngokufaka i-ZrO₂ ku-alumina nokusebenzisa ukushintsha kwesigaba sayo nezinye izindlela; ukuqinisa i-whisker kanye ne-fiber, ukwengeza i-SiC, i-Si₃N₄ whiskers noma i-C, i-SiC fibers ukwandisa iziteshi zokusabalala kwe-crack futhi kudle amandla okuqhekeka; ukuqinisa i-particle iwukwengeza izinhlayiya ze-modulus ezinwebekayo njenge-SiC kanye ne-TiC ukuze kuphambukiswe futhi kuhlukaniswe imifantu.
Amandla okugobeka kanye namandla okuthinta kwe-alumina ceramics aqinile athuthukiswa kakhulu. Isibonelo, amandla okugobeka kwe-zirconia aluminium ceramics aqinile angafinyelela ku-480MPa, kanti amandla okuthinta angama-7MPam1/2.
Ngokuphathelene nokusetshenziswa, emkhakheni wezokwelapha, isetshenziselwa ukukhiqiza izimila zamazinyo kanye namalunga okwenziwa ngenxa yokuhambisana kwayo okuhle kanye nokuqina okuphezulu, okunganciphisa izinkinga; emkhakheni we-semiconductor, njengesisekelo sokupakisha idivayisi, isetshenziswa kuma-IGBT ezimoto zikagesi, njll. ngenxa yokushabalalisa kwayo ukushisa okuhle kakhulu, ukufudumala kanye namandla omshini; kumathuluzi okusika, ingahlala izinzile emazingeni okushisa aphezulu futhi ikwazi ukucutshungulwa kwensimbi ecijile kanye nama-alloy. Izitsha ze-alumina eziqinile ziyakhanya emasimini amaningi ngokusebenza kwazo okuhle kakhulu. Izitsha ze-Chemshun zihlinzeka ngezitsha ze-alumina eziqinile ezinokumelana nokuklwebheka kwesidlo sakusihlwa kanye nokumelana nomthelela ohlelweni lokuphatha izinto eziningi.
Isikhathi sokuthunyelwe: Feb-28-2025