The present application relates to a kind of carbon filament electric explosion preparation nanometer
diamond powder method, belong to nanometer
diamond preparation process technical field.The method is installed in the
discharge tank of electric explosion
system with
discharge electrode by
electrically conductive carbon filament, add specific medium to
discharge tank and do good sealing, realize high-energy discharge by regulating and controlling the
voltage of high-
voltage capacitor group in electric explosion
system, make the overheating coefficient of carbon filament 4~20,
after discharge, repeat the electric explosion of multiple
carbon filaments, recover the discharge product, remove
metal and
residual carbon phase, after washing and
drying, obtain pure nanometer
diamond powder.The method uses high-purity carbon filament as
raw material, utilizes the high temperature and
high pressure effect generated in the process of electric explosion to synthesize nanometer diamond, adjusts the energy input density by adjusting the overheating coefficient, and then controls the yield of diamond, the obtained product has high
crystallinity and uniform
particle size distribution.