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Ti(C,N)was synthesized with the starting materials of 76.9% titania white and 23.1% carbon black(graphite or activated carbon),or 40% titania white and 60% amylum,with or without 10% NaBr-KCl,dry moulding and carbon embedded firing at 1 300 ℃ and 1 400 ℃ for 3 h,respectively.Phase composition and microstructure of the synthesized Ti(C,N)were analyzed by XRD,SEM and EPMA.Effects of different carbon sources and NaBr-KCl on the synthesis of Ti(C,N)were investigated.The results show that:(1)Ti(C,N)can be synthesized by using carbon black,graphite,activated carbon or amylum as carbon source separately;(2)Additive NaBr-KCl is more favorable for accelerating the carbothermal reduction reaction using carbon black or amylum as carbon source;(3)In the presence of NaBr-KCl,particle size of the synthesized Ti(C,N)is 5-8 μm using carbon black as carbon source fired at 1 300 ℃ for 3 h,while that is only 1-3 μm using graphite,activated carbon or amylum fired at 1 400 ℃ for 3 h.
Ti (C, N) was synthesized with the starting materials of 76.9% titania white and 23.1% carbon black (graphite or activated carbon), or 40% titania white and 60% amylum, with or without 10% NaBr-KCl, dry molding and carbon embedded firing at 1 300 ° C and 1 400 ° C for 3 h, respectively. Phase composition and microstructure of the synthesized Ti (C, N) were analyzed by XRD, SEM and EPMA. Effects of different carbon sources and NaBr-KCl on the synthesis of Ti (C, N) were investigated.The results show that: (1) Ti (C, N) can be synthesized by using carbon black, graphite, activated carbon or amylum as carbon source separately; (2) -KCl is more favorable for accelerating the carbothermal reduction reaction using carbon black or amylum as carbon source; (3) In the presence of NaBr-KCl, particle size of the synthesized Ti (C, N) is 5-8 μm using carbon black as carbon source fired at 1 300 ° C for 3 h, while that is only 1-3 μm using graphite, activated carbon or amylum fired at 1 400 ° C for 3 h.