溶胶-凝胶工艺合成Ti(C,N)超细粉末

Synthesis of Ti(C,N) Powder by Inorganic Sol-Gel Processing

以TiO（OH）2溶胶和炭黑为主原料，采用溶胶-凝胶工艺。经N2气氛下碳热还原合成了Ti（C，N）超细粉末．分析了合成过程的热力学，探讨了原料配比、合成温度、保温时间和氮气流量等工艺参数对Ti（C,N）组成和性能的影响．通过控制工艺条件，可以得到x值为0．2～0．7，粒径＜100nm的Ti（C1-x，Nx）超细粉末.

Ultrafine Ti(C,N) powder was synthesized by inorganic sol-gel and carbothermal- reductionprocessing using TiO(OH)2 and carbon black as starting materials. The thermodynamics of theprocess was analyzed. The effects of the ratio of raw materials, synthesizing temperature, holdingtime and the flow of N2 on the composition of Ti(C,N) were investigated. Ti(C1-x.,Nx) powderwith x values of 0.2-0.7 and an average particle size less than 100um can be obtained under properconditions.