The Sintering Behavior of SiC ,Composites Ceramic materials

Abstract

Abstract  Ytturia ,silicon carbide powders of  (99.99) purity having (80-100) µm   grain size were used to form different combinations of the system Y2O3- SiC . Silicon carbide was added in weight percent ranging (5,10,15and 20) .Sintering proses were done for all the combinations at different sintering temperature (800,1000,1200 and 1400)Ċ under static air  and for three hours . XRD test reflect the formation of new phase which is Y5Si3C (Unique) .Sintered density ,theoretical density and microstructure were investigated too .Improvement was noticed for all the combinations after adding Sic ,and sintered at different sintering temperature  .This was detected maximally at the combination (Y2O3 80-SiC20)Wt.% ,sintered at 1400 Ċ .