Corrosion Behavior and its Countermeasures of Copper for Building Materials

摘要

Corrosion behaviors and its countermeasures of copper used for building materials such as roofs and water supply systems in detached houses, apartments and buildings have been reviewed. The corrosion phenomena of pitting corrosion, erosion corrosion and cuprosolvency troubles are discussed based on both empirical data and experimental data. Especially, pitting corrosion of copper tubes are classified into five kinds of types in terms of the nature of the corrosion products, the structure of the corrosion pits and possible causes: Type I, Type I"-A, Type I"-B, Type II and Moundless. The countermeasures for each corrosion problems also are discussed.