Influence of Silica Rich CRT and BN on Mechanical, Wear and Corrosion Characteristics of Copper- Surface Composite Processed Through Friction Stir Processing

Abstract

The center of attention of current research lies on utilizing E-waste cathode ray tube (CRT) glass as reinforcement to develop copper hybrid surface composites through friction stir processing route. Pure copper is taken as base material which is reinforced with different volume % of CRT glass (5, 10 & 15) and fixed amount (2%) of BN. The particle size of the reinforced CRT and BN particles are 30 µm and 10 µm respectively. The developed surface composite was characterized for microstructure through optical microscope and scanning electron microscope, density, micro hardness, tensile properties and wears behavior. The analysis confirms the presence of reinforcements in the matrix and also evidence for recrystallization. Density of the MMC is found decreasing while the hardness increases with addition of CRT & BN. The tensile and yield strength of unprocessed Cu is superior to that of MMC whereas it enhanced with raise in reinforcement content. Wear resistance of Cu depicts incremental trend with respect to reinforcement’s addition. Scanning electron microscope was used to understand the worn out surface morphology and wear mechanism. Corrosion results depict that increase in CRT addition decrease the corrosion current density of surface composite.