Erosion Corrosion Behavior of Copper-nickel Alloy Pipe in Flowing Seawater
Journal Title: 河南科技大学学报（自然科学版） - Year 2017, Vol 38, Issue 3
Abstract
The erosion corrosion behavior of B10 copper-nickel alloy pipe in flowing artificial seawater was studied on the self-made simulated seawater erosion corrosion testing machine. The results show that the corrosion rate of B10 copper-nickel alloy pipe increases with the increasing of velocity of water flow at the same erosion time. When the water flow rate reaches 3. 0 m / s,the corrosion rate increases rapidly,the surface of the alloy seriously damages and the pits appear. The formation time of passivation film is different when the flow velocity is different. The initial corrosion rate of B10 copper-nickel alloy pipe is higher than that in the later stage when the flow rate of simulated sea water is 1. 5 m / s. After 96 h,the passivation film is formed. When the flow rate is 3. 0 m / s,the corrosion rate reached the maximum. The B10 copper-nickel alloy pipe starts to form passive film after 192 h,but the passivation film is very unstable and easily damaged.
Authors and Affiliations
Xiaomeng LI, Yanmin ZHANG, Xiuhua GUO, Kexing SONG, Zhou LI
Keywords
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