Nanocrystalline Al Composites from Powder Milled under Ammonia Gas Flow

Figure 1

Granulometric curve of AR Al and powders milled in NH₃ flow at (a) 300 rpm and (b) 500 rpm for 1, 3, and 5 h and (c) mean particle size (D4,3) of these powders.

(a)

(b)

(c)