Preparation of composite particles by pulsed Nd-YAG laser decomposition of [(CH3)2N]4Ti to TiN-Coat TiO2, Al2O3, or Si3N4 powders

Irradiation of Ti[N(CH 3 ) 2 ] 4 by the 1.064-μm line of a pulsed Nd:YAG laser in the presence of TiO 2 , Al 2 O 3 , or Si 3 N 4 particles has been found to form amorphous deposits on the oxide particles. The resulting materials can be processed into TiN/TiO 2 , TiN/Al 2 O 3 , or TiN/Si 3 N 4 composites with the TiN component on the surface of the particles. The powders have been characterized by Raman spectroscopy and X-ray powder diffraction studies. The surface analysis of the composites by X-ray photoelectron spectroscopy and high-resolution electron microscopy is presented