Nickel Plating Aluminum Galvanic Corrosion

First there must be two electrochemically dissimilar metals present.

Nickel plating aluminum galvanic corrosion.

The plating is typically electroless nickel and then gold. Galvanic corrosion is an electrochemical process in which one metal corrodes preferentially to another when both metals are in electrical contact in the presence of an electrolyte. Zangari in encyclopedia of interfacial chemistry 2018. Galvanic corrosion some times called dissimilar metal corrosion is the process by which the materials in contact with each other oxidizes or corrodes.

Electroless nickel plating can provide a robust solution to corrosive attack across a range of corrosive mechanisms including galvanic corrosion chemical attack and erosion. Electroless nickel plating en can be applied to a wide range of basis metals including steel copper brass and aluminum alloys. Galvanic corrosion also called bimetallic corrosion or dissimilar metal corrosion is an electrochemical process in which one metal corrodes preferentially when it is in electrical contact with another in the presence of an electrolyte a similar galvanic reaction is exploited in primary cells to generate a useful electrical voltage to power portable devices. There are three conditions that must exist for galvanic corrosion to occur.

Note that ni is more noble than low carbon steel essentially iron and. I am having plating problems such as visible peeling and blistering and voiding in areas. Porosity in base metal causing plating problems february 3 2017.