Importance

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Abstract

Method for producing a nickel foam having a specific weight of between 200 and 400 g/m.sup.2, at least comprising the steps of: providing a base foam having a conductive surface; nickel-plating the base foam in an electroplating bath, successively in a preplating zone and a main plating zone, whereby in the preplating zone the foam is plated with 0.5-19 g/m.sup.2 of nickel, whereby retarding means are used to retard the growth of nickel at least during the nucleation phase of the electroplating process, and, in the main plating zone, nickel is plated in the desired amount, such that the ultimate nickel foam has a specific weight of between 200 and 400 g/m.sup.2, while the flow direction of the electrolyte is reversed and whereby the reversing frequency of the electrolyte in the main plating zone is between 1 mHz and 0.1 Hz, whereby the electroplating bath has a conductivity of at least 200 mS/cm at 20.degree. C.; finally removing the base foam.

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First Claim