Effect of the composition of initial fullerites on the structure and properties of hard and elastic carbon phase formed in metallic matrix under pressure

摘要

The products of the transformation of different fullerites in the mixture with metal powders under a pressure of 5GPa at a temperature of 1200 degrees C have been studied. The initial fullerites were taken as soot extract and artificial mixtures of C-60 and 15-80% C-70. A superhard phase (with the "elastic" hardness exceeding 14GPa) is formed only from soot extract. The interlayer spacings in such phases were determined by X-ray diffraction to be 3.44-3.55 angstrom.