Al2O3- C specimens were prepared using fused corundum and flake graphite as starting materials,SiC as antioxidant,and phenolic resin as binder to research their corrosion resistance to oolitic-hematite reduction melt....Al2O3- C specimens were prepared using fused corundum and flake graphite as starting materials,SiC as antioxidant,and phenolic resin as binder to research their corrosion resistance to oolitic-hematite reduction melt. The tests of slag penetration and corrosion were carried out by static crucible method. The corrosion resistance was presented by the corrosion area and penetration depth. The corroded specimens were investigated by XRD,SEM and EDS. The results show that：（1） the corrosion resistance of Al2O3- C materials to oolitic-hematite reduction melt is improved obviously by the addition of SiC;（2） with the rising of reduction temperature and the prolonging of reduction duration,the corrosion area and penetration depth both increase rapidly;（3） the corrosion mechanism of the oolitic-hematite reduction melt can be described as that the melt reacts with Al2O3- C materials forming some low melting compounds such as CaO·Al2O3·2SiO2,CaO·2Al2O3and Fe2SiO4.展开更多
文摘Al2O3- C specimens were prepared using fused corundum and flake graphite as starting materials,SiC as antioxidant,and phenolic resin as binder to research their corrosion resistance to oolitic-hematite reduction melt. The tests of slag penetration and corrosion were carried out by static crucible method. The corrosion resistance was presented by the corrosion area and penetration depth. The corroded specimens were investigated by XRD,SEM and EDS. The results show that：（1） the corrosion resistance of Al2O3- C materials to oolitic-hematite reduction melt is improved obviously by the addition of SiC;（2） with the rising of reduction temperature and the prolonging of reduction duration,the corrosion area and penetration depth both increase rapidly;（3） the corrosion mechanism of the oolitic-hematite reduction melt can be described as that the melt reacts with Al2O3- C materials forming some low melting compounds such as CaO·Al2O3·2SiO2,CaO·2Al2O3and Fe2SiO4.
