Durability studies relevant to marine equipment

The corrosion behaviour of two copper-nickel alloys, namely Cu-30%Ni and Cu- 10%Ni, commercially pure titanium and two titanium alloys (T1-6A1-4V and Ti:5111) has been examined in environments of relevance to desalination and other marine equipment. The investigation was focused on two extremes of environments, pure water and high-velocity (with and without suspended solids) saline water. These represent conditions in which operational problems have been experienced or are anticipated and in relation to which very little information on basic durability is available. This work contained only brief experiments in quiescent seawater which has been studied in abundance previously; such tests were included in this research for background and comparison purposes only. The study involved exposure of specimens to distilled water (1.5-7 S/cm) at 2