摘要:
以钛铁矿为原料,采用分步球磨后碳热还原法,进行Ti(C,N)复合粉末的制备,并对Ti(C,N)复合粉末的粒径、形貌、物相组成和烧结性能进行测试与分析。结果表明:Ti(C,N)复合粉末粒径为2~5μm,呈正态分布,由Ti(C,N)和α-Fe组成。试验制备Ti(C,N)复合粉末烧结体的抗弯强度达到商业Ti(C,N)粉末烧结体的98%、断裂韧性达到商业Ti(C,N)粉末烧结体的110%。
Abstract:
The Ti(C,N) composite powder was prepared by fractional steps of carbon thermal reduction after ball milling using ilmenite as raw material,and the particle size,morphology,phase composition and sintering performances of the obtained composite powder were tested and analyzed.The results show that the particle size of the Ti(C,N) composite powder composed of Ti(C,N) and α-Fe phases is 2~5 μm,with nearly normal distribution.The flexural strength of the sintered body of the as-prepared Ti(C,N) composite powder could reach to 98% of that for commercial Ti(C,N) powder.Meanwhile,the fracture toughness of the sintered body of the as-prepared Ti(C,N) composite powder could reach to 110% of that for commercial Ti(C,N) powder.
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