Author/Authors :
Bai، نويسنده , , Yu-Jun and Feng، نويسنده , , Xin and Lü، نويسنده , , Bo and Wang، نويسنده , , Cheng-Guo and Qi، نويسنده , , Yong-Xin and Liu، نويسنده , , Yu-Xian and Zhu، نويسنده , , Bo and Wang، نويسنده , , Yan-Xiang، نويسنده ,
Abstract :
Nanocrystalline TiC hollow polyhedrons have been prepared at 500 °C by the reaction of TiCl4 and CaC2. Crystalline CaC2 particles with high melting point act not only as the reactant but also as the templates. X-ray powder diffraction indicates that the product is cubic TiC with a lattice constant a=4.314 Å. Transmission electron microscopy manifests that the polyhedrons are 30–60 nm in size. The formation mechanism of the polyhedrons is discussed.
