Shock-induced melting of diamond powders

Abstract

Conditions of shock-induced melting of diamond powders are considered. For powders of various porosities, shock Hugoniots in the coordinates (p, u) and (p, T ) and the pressures at the beginning and end of equilibrium melting are calculated. Thermal nonequilibrium of the shock compression of the powders is analyzed. Pressures at the onset of melting near pores are calculated. Shock-induced melting of detonation nanodiamond powders is considered. Calculation results show that explosion-induced melting of diamond powders is possible only under energy cumulation conditions.

Nanostructured Materials in Preparation Casting Alloys

“…There are some methods of obtaining nanodiamonds, shock-wave synthesis [1], which has a number of undeniable advantages over the probabilistic method, is the most efficient and fastest in time. Initially, there is no need for catalyst metals, whose doping materials reduce strength and thermal spalling resistance of the diamond.…”