Patent ID: 7374840

Claim:
A centrifugal atomized zinc alloy powder for alkaline batteries consisting of either of: (a) 0.005-2% by weight of indium, and 0.005-0.2% by weight of either one of Al and Bi, or (b) 0.005-2% by weight of indium, and 0.005-0.2% by weight of Bi, and 0.001-0.5% of either one or both of Al and Ca, or (c) 0.005-2% by weight of either one or both of Bi and Al, and 0-0.5% by weight of Pb, the remainder being zinc, and characterized in that the centrifugal atomising process is performed in a protective atmosphere, where the oxygen content is between 0.2% and 4% by volume.