INFLUENCE OF THE CHEMICAL COMPOSITION ON STRUCTURE AND PHYSICOMECHANICAL PROPERTIES OF POWDER MATERIALS
In article influence of content of aluminum in powder materials on the basis of copper on structure and physicomechanical properties is considered. Indicator charts of compaction are studied. It is established that process of compaction of powder furnace charge on the basis of copper depends on its chemical composition. With increase in concentration of aluminum in furnace charge force of compaction decreases, and the course of a punch increases at compaction of preparations of identical height. At the same time density of preparations decreases. With growth ofpressure of compaction density of preparations due to increase in structural deformation, and at powder copper increases more intensively. At the bigger size of structural deformation density of the preparations containing more than aluminum is, less, that is connected with existence of an oxidic film on a surface of particles of aluminum which interferes with merging. Durability of preparations with the content of aluminum is less. After agglomeration of copper-aluminum preparations the α-solid solution strengthened by intermetallida and oxides of aluminum that provides increase of hardness of powder material is formed.