The Analysis of Nickel-Clad Ceramic Powder Materials

Abstract

The task of developing new powder materials for use in gas-thermal technologies is solved by cladding metal oxide particles with a refractory metal component. The results of studies of powders of domestic production based on aluminum oxide (corundum) and zirconium dioxide subjected to chemical nickel plating (8 and 30%) are presented. The morphology, granular and phase compositions, as well as the distribution of the elemental composition were studied using electron microscopy and X-ray diffraction analysis. It is shown that the formation of a dense and homogeneous metal shell around the particles of the matrix material occurs when 30% of the metal is clad. According to X-ray diffraction analysis, powder materials have a multiphase composition:for aluminum oxide powder clad with 8% Ni; (Ni + −Al2O3 + −Al2O3) -for aluminum oxide powder clad with 30% Ni, (Ni + T-ZrO2) -for dioxide powder zirconium clad with 30% nickel. New powder materials of domestic production are competitive in relation to foreign analogues and due to cladding with a metal component will contribute to improving the plasticity of plasma coatings formed from them.