Surface Modification of Hastelloy through Cu and Ti Powder Incorporated Electric Discharge Alloying Technique

Abstract

The objective of the research was to combine the machining and coating process through the Electric Discharge Alloying (EDA) technique by incorporating copper (Cu) and titanium (Ti) powder in the dielectric medium. Material removal from the surface, coating of the workpiece, and reinforcing coating with strong carbide particles all occurred at the same time by regulating the process. It was the first technical report on such a comprehensive method. The EDS spot analysis confirmed that presence of carbon, copper, and titanium on the surface and EDS mapping inveterate the existence of reinforced particles on the coating. The Ti incorporated samples showed enhanced wear resistance due to the formation of a protective tribo layer.