The solid state reaction of Al/CuO induced by high-energy ball milling
was studied systematically. When the amount of Al was 20 wt%, only re
duction occurred. When the amount of Al exceeded 20 wt%, along with th
e reduction, a synthesis reaction occurred simultaneously. As the amou
nt of Al increased, the reaction products were Cu9Al4, CuAl2 or a Al(C
u) solid solution, respectively. The mechanism of these two types of r
eactions occurring during ball milling is discussed. (C) 1998 Elsevier
Science S.A.