As it can be seen in the SEM images in Figure 1, typical ammonium nitrate(V) granules have a very regular spherical shape of approximately 1 mm mean size. A typical granule represents (see Figure 1d)) an agglomerate of pore-free clusters of a characteristic size of ≈ 50 μm, spaced from each other by 10-20 μm gaps. Such structural configuration gives evidence that granules have a pronounced porosity in which opened pores are dominating. It was also established that, due to high porosity, ammonium nitrate(V) granules are able to absorb up to 9.5 wt% of the FLEX 401 oil. The SEM images presented in
Figure 2 illustrate the flaked shape and characteristic sizes of aluminum particles.