Zinc alloy powder for alkaline cell and method to produce the sa

Details Zinc alloy powder for alkaline cell and method to produce the sa Zinc alloy powder for alkaline cell and method to produce the sa

1993-07-21

1995-06-20

Andrews, Melvyn J.

Specialized metallurgical processes, compositions for use therei

Processes

Producing or purifying free metal powder or producing or...

75352, 429206, 429229, 420513, 420514, 420520, B22F 908, C22C 1800, H01M 442

Patent

active

054257980

ABSTRACT:
A non-amalgamated zinc alloy powder for use in an alkaline cell which consists of elements selected from the following compositions (1) to (4);
(1) 0.001 to 0.5% by weight of aluminum and 0.01 to 0.5% by weight of bismuth,
(2) 0.001 to 0.5% by weight of aluminum, 0.01 to 0.5% by weight of bismuth and indium in an amount greater than zero and up to 1.0% by weight,
(3) 0.001 to 0.5% by weight of aluminum, 0.01 to 0.5% by weight of bismuth and lithium in an amount greater than zero and up to 0.5% by weight,
(4) 0.001 to 0.5% by weight of aluminum, 0.01 to 0.5% by weight of bismuth, indium in an amount greater than zero and up to 1.0% by weight and calcium or lithium in an amount greater than zero and up to 0.5% by weight;
and the balance being zinc and containing iron as an inevitably accidental impurity in an amount of not more than 1 ppm; and which can greatly suppress the evolution of hydrogen gas and maintain the discharge performance on a practical level:
and a method to produce the same.

REFERENCES:
patent: 5168018 (1992-12-01), Yoshizawa et al.

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