Alumina ceramic chinhu chinoshandiswa mumaindasitiri chinozivikanwa nekuomarara kwayo kweMohs kwe9. Izvi zvinoita kuti ive sarudzo yakanaka yekushandisa zvinhu zvakaoma, kunyanya kana paine kukweshana, ngura, uye tembiricha yakakwira. Chinyorwa chino chinoongorora mavambo ekuomarara kwayo kwakanyanya uye mashandiro ayo akanaka.
Kuomarara kwakanyanya kwealumina ceramic kubva muchimiro chayo chakasiyana chekristaro uye kubatana kwemakemikari. Chikamu chayo chikuru, α-alumina (α-Al₂O₃), inoshandisa chimiro che corundum chine maion e oxygen nearuminiyamu akabatanidzwa nekubatana kwakasimba kweionic ne covalent. Kubatana uku kunopa simba rakawanda re lattice, zvichiita kuti chinhu chikwanise kuramba kushanduka kwepurasitiki nekutyoka pasi pekumanikidzwa kwekunze. Uyezve, zvinhu zvakacheneswa zvakanyanya uye matekiniki epamusoro ekupisa zvinobvisa zvikanganiso zvidiki, zvichiwedzera kuwanda uye kuomarara.
Kuomarara kwakanyanya kunoreva kushanda zvakanaka. Kusapfeka kwayo kwakanyanya kunoita kuti ishandiswe zvakanyanya mumagetsi ekubata marasha mumagetsi ekupisa, michina yekubvisa guruva mumichina yesimbi, mapaipi ekutakura matombo mumigodhi, masisitimu ekukuya hupfu hwakasvibira neclinker mumiti yesimende, uye michina yekutakura hupfu muindasitiri yemakemikari, zvichipfuura simbi dzechinyakare muhupenyu hwadzo. Pamusoro pezvo, chinhu ichi chinoratidza ngura yemakemikari, ichitsungirira maacid akasimba, alkalis, uye organic solvents. Pasi pekupisa kwakanyanya, alumina ceramic inochengetedza hunhu hwakasimba hwemakanika nemakemikari, ichishanda zvakavimbika pamusoro pe1600°C. Uyezve, kuomarara kwakanyanya kunobatsira mukudzivirira kwemagetsi kwakanaka uye kushaya simba kwekupisa, zvichiita kuti ikodzere zvishandiso zvemagetsi nezvikamu zvekutonga kupisa.
Muchidimbu,alumina zvedongo, nekuoma kwayo kweMohs kwe9, ine basa guru muminda yeindasitiri netekinoroji. Kusapera kwayo zvakanyanya uye kuramba ngura, kugadzikana kwayo pakupisa kwakanyanya, uye hunhu hwayo hwekudzivirira kupisa kwemagetsi zvinoita kuti ive chinhu chakakosha pakugadzira zvinhu zvepamusoro uye matekinoroji matsva. Sezvo matekiniki ekugadzirisa achiramba achichinja, mikana yekushandisa alumina ceramic inotarisirwa kuwedzera zvakanyanya.
Nguva yekutumira: Gumiguru-28-2025