The influence of additives TiO2,Y2O3 and composite rare earth on sintering of Cr2O3 in reductive atmosphere was studied.Results show that TiO2 can effectively increase the sinteed density at low temperature,As the inc...The influence of additives TiO2,Y2O3 and composite rare earth on sintering of Cr2O3 in reductive atmosphere was studied.Results show that TiO2 can effectively increase the sinteed density at low temperature,As the increase of sintering temperature,such kind of effect becomes more and more unobvious and finaly disappear at 1550℃.Moreover,Y2O3 and composite rare earth have negative effect on sintering.展开更多
An O'-Sialon-Al2O3 composite refractory was prepared by in situ reaction of Si3N4-ZrSiO4-Al2O3 mixture with fused alumina aggregates.Densification,in situreaction procedure and microstructure of the material were ...An O'-Sialon-Al2O3 composite refractory was prepared by in situ reaction of Si3N4-ZrSiO4-Al2O3 mixture with fused alumina aggregates.Densification,in situreaction procedure and microstructure of the material were investigated by means of X-ray diffraction,optical and scanning electronic microscopes and EDAX.展开更多
文摘The influence of additives TiO2,Y2O3 and composite rare earth on sintering of Cr2O3 in reductive atmosphere was studied.Results show that TiO2 can effectively increase the sinteed density at low temperature,As the increase of sintering temperature,such kind of effect becomes more and more unobvious and finaly disappear at 1550℃.Moreover,Y2O3 and composite rare earth have negative effect on sintering.
文摘An O'-Sialon-Al2O3 composite refractory was prepared by in situ reaction of Si3N4-ZrSiO4-Al2O3 mixture with fused alumina aggregates.Densification,in situreaction procedure and microstructure of the material were investigated by means of X-ray diffraction,optical and scanning electronic microscopes and EDAX.
