Structure and Property Formation of Composite Materials on the Basis of Polytetrafluoroethylene Under the Explosive Processing

The paper considers the peculiarities of structure forming in composite materials on the basis of polytetrafluoroethylene (PTFE) containing metals or polyimide while explosive processing of powder compositions by the ring shock front. The stepwise change of the structure in the center of pressing, accompanied by occurrence of nanodimensional phases, change of fine structure and increase of microhardness is determined. It is achieved under a certain combination of the explosive's parameters and powder composition's porosity.