Aluminum oxide wani abu ne na farin ko ɗan ja mai siffa mai siffar sanda mai yawa 3.5-3.9g/cm3, wurin narkewar 2045, da kuma wurin tafasa na 2980 ℃. Ba ya narkewa a cikin ruwa amma yana ɗan narkewa a cikin alkali ko acid. Akwai nau'ikan hydrates guda biyu: monohydrate da trihydrate, kowannensu yana da nau'ikan a da y. Dumama hydrates a 200-600 ℃ na iya haifar da alumina da aka kunna tare da siffofi daban-daban. A aikace aikace, nau'in Y-alumina mai kunnawa ana amfani da shi musamman. Tauri (Hr) na alumina shine 2700-3000, Matsakaicin Matasa shine 350-410 GPa, ƙimar thermal shine 0.75-1.35 / (m * h. ℃), kuma ƙimar haɓaka madaidaiciya shine 8.5X10-6 ℃ -1 (zafin daki -1000 ℃). High tsarki ultrafine alumina yana da abũbuwan amfãni daga high tsarki, kananan barbashi size, high yawa, high zafin jiki ƙarfi, lalata juriya, da kuma sauki sintering. High tsarki ultrafine alumina yana da halaye kamar lafiya da kuma uniform tsarin tsarin, takamaiman hatsi iyaka tsarin, high zafin jiki kwanciyar hankali, mai kyau aiki yi, zafi juriya, da kuma ikon hada da daban-daban kayan.
Yin amfani da alumina mai tsabta mai tsabta
High tsarki alumina yana da halaye na lalata juriya, high zafin jiki juriya, high taurin, high ƙarfi, juriya juriya, hadawan abu da iskar shaka juriya, kuma mai kyau rufi tare da babban surface area. Ana amfani dashi ko'ina a cikin manyan fasahohin fasaha irin su bioceramics, kyakkyawan yumbu mai kyau, masu haɓaka sinadarai, ƙarancin ƙasa mai launi mai launi mai launi uku, haɗaɗɗen kwakwalwan kwamfuta, na'urorin hasken sararin samaniya, na'urori masu auna zafi, da kayan sha na infrared.
Lokacin aikawa: Fabrairu-01-2024