Aluminium oxide, inozivikanwawo sealumina, ikemikari inoumbwa nearuminiyamu neokisijeni, ine fomura yeAl₂O₃. Chinhu ichi chinoshandiswa zvakasiyana-siyana chinhu chichena, chakaita sekristaro chinoita basa rakakosha mumaindasitiri akasiyana-siyana nekuda kwehunhu hwacho hwakasiyana.
Chimwe chezvinhu zvinonyanya kukosha pakugadzirwa kwealuminium oxide ndiko kuoma kwayo kukuru. Iri panhamba 9 pachikero cheMohs, zvichiita kuti ive imwe yezvinhu zvakaoma zvikuru zviripo. Kuoma uku kunoita kuti aluminium oxide ive chinhu chinokwevera, chinoshandiswa zvakanyanya mumapepa ejecha, mavhiri ekukuya, uye maturusi ekucheka. Kugara kwayo kwenguva refu kunoita kuti ikwanise kumira zvakasimba, zvichiita kuti ive sarudzo inofarirwa mukugadzira nekuvaka.
Pamusoro pekuoma kwayo, aluminium oxide inozivikanwawo nehunyanzvi hwayo hwekudzivirira kupisa uye magetsi. Izvi zvinoita kuti ive chinhu chakakosha muindasitiri yezvemagetsi, uko inoshandiswa semudziyo wekudzivirira kupisa muma capacitor nezvimwe zvikamu zvemagetsi. Uyezve, nzvimbo yayo yekunyunguduka (inenge 2050°C kana 3722°F) inobvumira kuti ishandiswe mukushandiswa kwekupisa kwakanyanya, senge zvinhu zvinodzivirira kupisa mumaovheni nemakiln.
Aluminium oxide inoshandiswawo zvakanyanya mukugadzira simbi yearuminiyamu kuburikidza neBayer process, uko bauxite ore inonatswa kuti ibudise alumina. Maitiro aya akakosha kuindasitiri yearuminiyamu, sezvo ichipa zvinhu zvinodiwa pakugadzira zvigadzirwa zvearuminiyamu zvakareruka uye zvinodzivirira ngura.
Uyezve, aluminium oxide inoshandiswa mukugadzira zvinhu zveceramic, uko inoshandiswa kugadzira zvinhu zveceramic zvemhando yepamusoro zvinoshandiswa mumhando dzakasiyana-siyana dzemashandisirwo epamusoro-soro, kusanganisira michina yemuchadenga nemidziyo yekurapa. Kuenderana kwayo nehupenyu kunoita kuti ikodzere kushandiswa mukugadzira mazino nekugadzira nhengo dzemuviri.
Mukupedzisa, aluminium oxide imusanganiswa une mativi akawanda une mashandisirwo akasiyana-siyana mumaindasitiri akasiyana-siyana. Hunhu hwayo hwakasiyana, kusanganisira kuomarara, kugadzikana kwekupisa, uye kuputira magetsi, zvinoita kuti ive chinhu chakakosha muhunyanzvi hwemazuva ano uye maitiro ekugadzira. Sezvo maindasitiri achiramba achichinja, kukosha kwealuminium oxide kunogona kukura, zvichiwedzera kusimbisa basa rayo mukuvandudza nekusimudzira.
Nguva yekutumira: Kubvumbi-01-2025
