Effect of Flow on Corrosion of Copper-Nickel Alloys in Aerated Sea Water and in Sulfide-Polluted Sea Water
Effect of Flow on Corrosion of Copper-Nickel Alloys in Aerated Sea Water and in Sulfide-Polluted Sea Water
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DOI：
10.5006/0010-9312-36.2.73
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发表时间：
1980-02
期刊：
影响因子：
1.6
通讯作者：
B. Syrett;S. Wing
中科院分区：
文献类型：
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作者：
B. Syrett;S. Wing
采用循环流动实验装置研究了90：10 Cu：Ni和70：30 Cu：Ni合金在含硫化物≤ 0.2g/m3的曝气海水和脱气海水中的腐蚀行为。每种合金的管状试样在良好表征的流体动力学和传质条件下进行测试。在海水流速高达5 m/s（雷诺数高达74，000）时，硫化物污染海水中的腐蚀速率低于充气海水。因此，即使在相对不利的流动条件下，仅仅存在硫化物也不会导致铜-镍合金的加速侵蚀。这些结果可以与其他工作者的结果相比较，他们发现当硫化物和氧气都存在于流动的海水中时，铜镍合金的腐蚀速率高于在未受污染的充气海水中获得的腐蚀速率。在大多数的实验条件下检查，腐蚀发生相当均匀的整个试样的暴露表面。但是，在海水中，...
Abstract The corrosion of 90:10 Cu:Ni and 70:30 Cu:Ni alloys in aerated sea water and deaerated sea water containing ∼ 0.2 g/m3 sulfide has been studied using a recirculating flow loop. Tubular specimens of each alloy were tested under well characterized hydrodynamic and mass transfer conditions. At sea water velocities up to 5 m/s (Reynolds numbers up to 74,000), the corrosion rates in the sulfide polluted sea water were lower than in the aerated sea water. Thus, even under comparatively adverse flow conditions, the mere presence of sulfide does not cause accelerated attack of copper-nickel alloys. These results can be compared with those of other workers who found that when both sulfide and oxygen were present in flowing sea water, the rates of corrosion of copper-nickel alloys were higher than those obtained in unpolluted aerated sea water. Under most of the experimental conditions examined, corrosion occurred fairly uniformly across the exposed surfaces of the specimens. However, in aerated sea water,...