Corrosion Behaviour of Copper and Copper-Coated Stainless Steel in Simulated Hand Sweat Solution

Abstract

Copper is widely used as an antimicrobial material on frequently touched surfaces due to its ability to kill bacteria and viruses by releasing copper ions. However, its long-term use is limited by corrosion caused by human sweat, which contains chloride ions, acids, and organic compounds. These substances accelerate copper degradation, cause surface discoloration, and reduce the antimicrobial effectiveness of copper-based surfaces. Therefore, selecting a copper-based surface with high corrosion resistance is essential for ensuring long-term performance in real environments. This study investigates the corrosion behaviour of copper and copper coated stainless steel in simulated hand sweat solution to determine their durability and stability in touch surface applications.