Aluminium oxide yog xim dawb los yog xim liab me ntsis zoo li tus pas nrig nrog qhov ntom ntawm 3.5-3.9g / cm3, melting point ntawm 2045, thiab boiling point ntawm 2980 ℃. Nws yog insoluble hauv dej tab sis me ntsis soluble hauv alkali lossis acid. Muaj ob hom hydrates: monohydrate thiab trihydrate, txhua tus muaj ib thiab y variants. Cua sov cov hydrates ntawm 200-600 ℃ tuaj yeem tsim kom muaj alumina nrog cov duab sib txawv. Hauv kev siv tswv yim, Y-hom activated alumina feem ntau yog siv. Lub hardness (Hr) ntawm alumina yog 2700-3000, Young's modulus yog 350-410 GPa, thermal conductivity yog 0.75-1.35 / (m * h. ℃), thiab linear expansion coefficient yog 8.5X10-6 ℃ -1 (chaw kub -1000 ℃). High purity ultrafine alumina muaj qhov zoo ntawm purity siab, me me particle loj, siab ceev, siab kub zog, corrosion kuj, thiab yooj yim sintering. High purity ultrafine alumina muaj cov yam ntxwv xws li kev ua haujlwm zoo thiab tsis sib xws, cov qauv ciam teb tshwj xeeb, kev kub siab ruaj khov, kev ua haujlwm zoo, ua haujlwm kub, thiab muaj peev xwm sib xyaw nrog ntau yam ntaub ntawv.
Kev siv high-purity alumina
High purity alumina muaj cov yam ntxwv ntawm corrosion kuj, kub tsis kam, siab hardness, siab zog, hnav tsis kam, oxidation kuj, thiab zoo rwb thaiv tsev nrog ib tug loj deg cheeb tsam. Nws yog dav siv nyob rau hauv high-tech teb xws li bioceramics, nplua ceramics, tshuaj catalysts, tsis tshua muaj lub ntiaj teb peb xim noob fluorescent hmoov, integrated circuit chips, aerospace light source devices, humidity rhiab sensors, thiab infrared absorption cov ntaub ntawv.
Post lub sij hawm: Feb-01-2024