Structural features of diamond powder after surface modification by sintering activators

The article presents the results of studies of the surface structure of diamond powders of different origin (ultrafine powders of diamond, micron powders of diamond of static synthesis, and powders of impact diamonds of Popigai crater) after prior modification by the sintering activators (silicon, titanium, tungsten). As a result of the thermal treatment in a protective atmosphere composite powders such as diamondtitanium (silicon, tungsten) are produced. The surface morphology of modified diamond powders is studied. The research results can be used for the further technology development of the composite and polycrystalline diamond materials.