Abstract:
The continued utilization of copper and copper-based alloys is significantly threatened by various forms of corrosion that result from exposure to corrosive environments. Corrosion of copper and copper-based alloys such as brass, bronze, and cupronickel occurs when these materials are subjected to different environmental conditions, including moisture, pollutants, acids, and other reactive agents. Although copper and its alloys possess good natural resistance brought on by the development of a protective oxide layer, exposure to aggressive conditions, such as chlorides, pollutants, and mechanical stresses, can lead to corrosion problems. The development of surface films and the processes by which copper-based alloys corrode are covered in this thorough review. The main elements that affect how copper and copper-based alloys corrode are also highlighted. A significant focus of this review is on mitigation strategies to increase the lifespan of copper and copper-based alloys. Several methods have been summarized, with particular emphasis on the utilization of inhibitors and anticorrosion coatings. The use of inhibitors and anticorrosive coatings, including organic compounds, plant extracts, and polymers, has proven effective in enhancing copper and copper-based alloys resistance to corrosion, with inhibition efficiencies ranging from 80% to 95%. For example, an extract from Pyracantha fortuneana in 0.5 M H2SO4 achieved an inhibition effectiveness of 95% at an inhibitor concentration of 600 mg/L. The insights obtained from this review will inform future research initiatives and the application of copper and copper-based alloys across a variety of industries. The primary objective will be to develop copper alloys that possess self-healing capabilities, as well as self-healing anticorrosion materials. Such advancements have the potential to represent a significant leap forward for critical applications in the aerospace, power plants and marine sectors, in addition to other high-temperature environments.