ABSTRACT

The results of an experimental program on shock-induced chemical reactions and synthesis of binary compounds are presented. Binary powder mixture systems that are investigated include: (i) intermetallic forming compounds (e.g., Ni-Al, Ni-Si, Nb-Si, etc.) associated with large negative heats of reaction; and (ii) isomorphous (e.g., Ni-Cu) and fully immiscible (e.g., Nb-Cu) systems associated with zero (or positive) heat of reaction. The extent of shock induced chemical reactions and the type of shock synthesized compounds formed in these systems are observed to be dependent on (i) shock-loading conditions, (ii) the relative volumetric distribution of the mixture constituents, and (iii) differences in respective material properties which affect relative particle flow.