A contribution to the study of the electronic mechanism of activated sintering of tungsten

Using own experimental data and existing understandings, mechanism of small additions of nickel on tungsten sintering was considered. Most essential explanation gives consideration of tungsten and nickel electronic interactions followed by separation of free energy SWACC d5 of tungsten and d5 and d10 of nickel increase. Due to the considerably higher energetic stability of tungsten atom, prevailing transition of nickel atom electrons into tungsten atoms is taking place with lead to the practical uni-polar diffusion of tungsten atoms into nickel. SWASC d5 of tungsten being high, relatively low content of nickel is necessary, corresponding to the quantity required for the formation of monolayer of its atoms on the surface of tungsten particles. At some ''critical'' content of nickel electron exchange takes place without further localization. Increase of additive content over ''critical'' effects saturation of composition by inlocalized electrons, decreases thermodynamical stability of tungsten lattice, and increases mobility of its atom. These changes condition increase of plasticity of said systems that was observed experimentally too