Effect of sintering temperature on microstructure and performance of Ti(C,N)-based cermets

摘要

In order to find a way which is low cost in preparation of Ti(C,N)/Fe composites.Ti(C,N)/Fe composites were prepared from TiFe(w(Ti)=30％),FeNCr(w(N)=5％,w(Cr)=60％) and toner by Vacuum Hot-pressed Sintering.The effect of sintering temperature on microstructure and performance of Ti(C,N)/Fe composites and the reason of it were studied.The results show that the Ti(C,N)/Fe composites prepared by Vacuum Hot-pressed Sintering have excellent performance,when the temperature was less than 1150°C,shrinkage rate of material was low,and reaction was slow.When the temperature was higher than 1150°C,material shrunk obviously,and reaction became faster,fracture toughness and bending strength rised rapidly at 1150°C-1200°C,rised slowly at 1200°C-1250°C,hardness was maximum at 1200°C.