Структурно-фазовые превращения и массоперенос в системе «металл-кремний» при воздействии компрессионных плазменных потоков

Abstract

Structure and phase changes of systems «zirconium - silicon» and «titanium – silicon» treated by compression plasma flows were studied by means of X-ray diffraction and scanning electron microscopy. For plasma energy densities 7-9 J/cm^2 modified layers consist of metal and silicide (Ti5Si3, ZrSi2). For energy densities of plasma more than 10 J/cm^2 whole modified layer consists of silicide. SEM investigations showed that modified layer thickness varies depending on plasma energy density from 1 μm to 30 μm. It consists of silicon dendrites and nanostructured eutectics between silicon and silicide (Ti5Si3, ZrSi2) in inter-dendritic space. Such structures are perspectives for production of high temperature coatings and for formation of ohmic electrodes