Fig. 4From: Nanoparticles formation mechanisms through the spark erosion of alloys in cryogenic liquidsNanosized particles obtained in liquid nitrogen. a Ti (on inset diffraction of δ-TiN); arrows indicate the cuboid particle. b Ni49Cu1Ti47Zr3 nanopowder. DF image from the agglomerate and diffractions before and after heating in the column of microscope are shown in the insets Back to article page