Plating on Aluminium using an Iron inter layer: Part II- Application of an Iron layer without subsequent flash-plating of copper or brass

Abstract

Plating on aluminium using an initial immersion coating of iron was carried out without subsequent copper or brass flash plating. Iron was deposited by immersion in a ferric chloride solution at 90-95°C and nickel was then directly electroplated on it. The adhesion of the nickel deposit was further improved by stoving at 250° c-/+ 10°C. The adhesion of nickel on aluminium obtained was very good, as judge by usual qualitative adhesion tests. The effect of addition of salts of nickel chloride, stannous chloride, and manganese chloride to the ferric chloride solution was also studied in relation to adhesion of the final nickel deposit. Stannous chloride or nickel chloride when added to ferric chloride solution, improved the adhesion of the final nickel deposit but manganese chloride failed to do so.