“…Nanotubes [9][10][11][12][13], nanodiamonds [2,5], and fullerites [3,[14][15][16] are mentioned in the literature as possible carbon sources. Among the methods used for modification of copper with carbon are sintering [6,13], the formation of film coatings by the joint deposition of Cu and carbon [15,16], carbon deposition from gaseous phase via the catalytic decomposition of acetylene and ethylene with subsequent compacting and sintering [12], application of ultrahigh strain [1], and shock-wave loading [14]. Also, a promising technique is mechanical milling in high-energy ball mills [2,[3][4][5]7].…”