THE MECHANISM FOR NANOMETER-SIZED TiC SYNTHESIZING BY MECHANICAL & THERMAL ACTIVATION PROCESSING  

作　　者：X.L.Cui L.S.Cui T.Sun M.Zhu 

机构地区：[1]CollegeofMechanicalEngineering,SouthChinaUniversityofTechnology,Guangzhou510640,China [2]DepartmentofMaterialsScienceandEngineering,UniversityofPetroleum,Beijing102200,China

出　　处：《Acta Metallurgica Sinica(English Letters)》2005年第3期319-324,共6页金属学报（英文版）

基　　金：The project was supported by China Postdoctoral Science Foundation(No.2003034452);National Natural Science Foundation of China(No.50371027).

摘　　要：A novel process for synthesizing nano-ceramics powders, named mechanical & therm al activation processing, is discussed in the present paper. It is a processing based on thermal activation in liquid phase (molten salt) after mechanical activ ation. The nanometer-sized TiC particles (15-20nm) have been synthesized by the method, and analyzed by X-ray diffraction (XRD), transmission electron microscop e (TEM), scanning electron microscopy (SEM) and energy dispersion X-ray (EDX) sp ectroscopy. An interface interaction between liquid (molten salt) and solid (fin al product particles) phases plays a dominating role for the control of product particles size. The mechanism for the formation of nanometer-sized TiC particles has been discussed.A novel process for synthesizing nano-ceramics powders, named mechanical & therm al activation processing, is discussed in the present paper. It is a processing based on thermal activation in liquid phase (molten salt) after mechanical activ ation. The nanometer-sized TiC particles (15-20nm) have been synthesized by the method, and analyzed by X-ray diffraction (XRD), transmission electron microscop e (TEM), scanning electron microscopy (SEM) and energy dispersion X-ray (EDX) sp ectroscopy. An interface interaction between liquid (molten salt) and solid (fin al product particles) phases plays a dominating role for the control of product particles size. The mechanism for the formation of nanometer-sized TiC particles has been discussed.

关 键 词：TIC nanometer-sized powder interface interaction mechanical activation molten salt 

分 类 号：TB383[一般工业技术—材料科学与工程]