Electrolytic Etching of Platinum- Aluminium Based Alloys

Abstract

Department of Mechanical and Manufacturing Engineering, University of Nairobi, PO Box 30197-00100, Nairobi, Kenya, and African Materials Science and Engineering Network (AMSEN) The microstructures of as-cast and annealed platinum alloys of different compositions were revealed after electrolytic etching in hydrochloric acid/sodium chloride solution using direct current. It was shown that the etching process enhances good microstructural images of platinum-aluminium based alloys.