Developments in platinum electroplating for aero-engine applications

The electro-deposition of platinum on mild steel and nimonic alloys substrates using more than twenty baths have been investigated. It has been shown that the cell efficiency can be improved markedly with lower current density, pH value and plating temperature. Distinct differences between direct and pulsed processes revealed themselves in the cathode current efficiency data. Implications of using pulse plating to control the quality of electrodeposits have been considered. [Continues.]