THE DEVELOPMENT OF PHYSICO-CHEMICAL AND TECHNOLOGICAL BASES OF COMPACTING OF THE DISPERSE METAL SYSTEMS

The object of investigation: powders of iron, nickel, copper and molybdenum of the different degree of dispersion. The purpose of the work: the development of the physical metallurgy base of the process of structure-formation in compacting the metal powders, giving the possibility of prognosing the evolution of the structure on the different stages of the powder technology. For the first time, the investigation of the structural changes in pressings of metal powder of the different degree of dispersion and the methods of obtaining in hydrogen with its inisothermic heating has been performed. The new data about the consequence of the recrystallization process course with the powder pressings sintering with different structure have been received. On the base of the established laws of the structure formation with sintering of the metal powder pressings, the technological conditions for receiving the ultrafine-grade structure have been offered, which is one of the main problems of the micromaterial physical metallurgy. Developed have been the optimum conditions for obtaining the ultradisperse particles of metals such as iron, nickel, copper, tungsten cobalt, molybdenumAvailable from VNTIC / VNTIC - Scientific & Technical Information Centre of RussiaSIGLERURussian Federatio