Synthesis and properties of ceramic nanoparticles and nanocomposites

Abstract

This paper describes the possibilities of synthesizing ceramic nanoparticles in a microwave plasma. The properties of these particles can be modified by coating them with a layer of a second material. A two-step process to produce this type of particle is described. The structure of these nanocoated particles depends strongly on the crystallisation behaviour of the phases forming the kernel and the coating. The main applications of these new nanocoated particles may either be seen in the formation of diffusion barriers to avoid grain growth or in the modification of physical properties of the core and the chemical properties of the surface.