Fig. 6: BSE-SEM micrographs of Al-36wt%Ni (Al80Ni20) particles atomized in helium.

Panels show a diameters of 328 μm and b diameters of 150 μm; c Selected synchrotron x-ray microtomography slices of a 310 μm Al-36wt%Ni (Al80Ni20) droplet atomized in helium. The arrows denote nucleation points at the surface of the droplets, with primary dendrite arms growing towards the center of the droplet.