Aluminium oxide, inozivikanwawo sealumina, ikemikari inoumbwa nealuminium uye oksijeni, ine fomula Al₂O₃. Ichi chinhu chinochinjika chinhu chichena, chekristaro chinoita basa rakakosha mumaindasitiri akasiyana nekuda kwezvakasiyana zvimiro.
Imwe yeakanyanya kukosha maitiro ealuminium oxide kuoma kwayo kwakasiyana. Inoisa 9 pachiyero cheMohs, ichiita kuti ive imwe yezvinhu zvakaoma zvikuru zviripo. Kuomarara uku kunoita kuti aluminium oxide ive yakanakira abrasive, inowanzoshandiswa mumapepa ejecha, mavhiri ekukuya, uye maturusi ekucheka. Kugara kwayo kunovimbisa kuti inokwanisa kumirisana nekushandisa kwakasimba, zvichiita kuti ive sarudzo yakasarudzika mukugadzira nekuvaka.
Pamusoro pekuoma kwayo, aluminium oxide inozivikanwa zvakare nekunaka kwayo yekupisa uye yemagetsi insulating zvivakwa. Izvi zvinoita kuti ive chinhu chakakosha muindasitiri yemagetsi, iyo inoshandiswa se insulator mune capacitors uye zvimwe zvinhu zvemagetsi. Uyezve, nzvimbo yayo yakakwira yekunyungudika (inenge 2050 ° C kana 3722 ° F) inobvumira kuti ishandiswe mukupisa-kupisa kwepamusoro, senge zvinhu zvinoramba zviri muvira nemoto.
Aluminium oxide inoshandiswawo zvakanyanya mukugadzira simbi yealuminium kuburikidza neBayer process, uko bauxite ore inonatswa kubvisa alumina. Maitiro aya akakosha kune indasitiri yealuminium, sezvo ichipa iyo mbishi inodiwa pakugadzirwa kwezvakareruka uye zvinodzivirira aluminium zvigadzirwa.
Uyezve, aruminiyamu oxide ine maapplication mumunda weceramics, uko inoshandiswa kugadzira zvemberi zveceramic zvinhu zvinoshandiswa mumhando dzakasiyana-siyana dzepamusoro-tekinoroji, zvinosanganisira aerospace uye biomedical zvishandiso. Iyo biocompatibility inoita kuti ive yakakodzera kushandiswa mumazino ekuisa mazino uye prosthetics.
Mukupedzisa, aluminium oxide musanganiswa wakawanda une huwandu hwakawanda hwekushandisa mumaindasitiri akasiyana siyana. Hunhu hwayo hwakasiyana, hunosanganisira kuoma, kugadzikana kwemafuta, uye kuvharwa kwemagetsi, inoita kuti ive chinhu chakakosha muhunyanzvi hwazvino uye maitiro ekugadzira. Sezvo maindasitiri ari kuramba achishanduka, kukosha kwealuminium oxide kungangokura, zvichisimbisa basa rayo mukuvandudza nekusimudzira.
Nguva yekutumira: Kubvumbi-01-2025
