Chromium oxide nyob rau hauv lub qhovliab fused aluminaCov khoom siv refractory tsawg dua 40‰, thiab cov khoom seem yog alumina. Nyob rau tib lub sijhawm, cov xim liab fused alumina refractory khoom yuav muaj me me ntawm impurities, uas muaj ntau dua refractoriness thiab ntau dua hardness, thiab muaj zoo heev corrosion kuj. Kev sib deev, zoo thermal shock kuj thiab siab hnav tsis kam. Los ntawm daim ntawv thov kev pom, liab fused alumina refractories yog dav siv, piv txwv li, ladle refining rauv, thee dej slurry pressurized gasification rauv hauv ob sab phlu, carbon dub tshuaj tiv thaiv rauv hauv ob sab phlu, thiab lwm yam, yog indispensable cov ntaub ntawv nyob rau hauv high kub industries.
Cr2O3thiab Al2O3muaj tib lub qauv siv lead ua, thiab lawv cov ionic radii txawv ntawm 13.7 feem pua. Yog li ntawd, nyob rau hauv qhov kub thiab txias, Cr2O3thiab Al2O3tuaj yeem tsim ib qho kev daws teeb meem tsis kawg. Thaum cov ntsiab lus ntawm Cr2O3yog nce, cov kua dej kub yuav nce. Yog tias tsim nyog tus nqi ntawm Cr2O3yog ntxiv rau Al2O3, nws yuav pom tias cov khoom siv kho tshuab thiab kev ua haujlwm siab ntawm corundum-based refractories hloov.
Cr2O3tuaj yeem tsim cov tebchaw nrog cov ntsiab lus melting ntau dua lossis eutectics nrog ntau dua melting kub nrog ntau hom oxides.
Tsis tas li ntawd, Cr2O3Kuj tseem tuaj yeem ua kom cov viscosity ntawm cov slag, viscosity nce, fluidity ntawm slag yuav txo, thiab yaig ntawm cov khoom refractory los ntawm cov slag kuj yuav txo tau. Thaum peb ntxiv qhov tsim nyog ntawm Cr2O3mus rau cov khoom siv refractory, nws tuaj yeem txo qhov spalling ntawm lub qhov cub hauv ob sab phlu khoom tsim los ntawm kev yaig.