流动海水中铜镍合金管材的冲刷腐蚀行为

发布时间：2018-07-05 02:51

本文选题：B铜镍合金管材 + 腐蚀速率　；参考：《河南科技大学学报(自然科学版)》2017年03期

【摘要】：在自制的模拟人工海水管材冲刷腐蚀试验机上进行冲刷腐蚀试验,研究了B10铜镍合金管材在流动人工海水中的冲刷腐蚀行为。研究结果表明:当冲刷时间相同时,B10铜镍合金管材腐蚀速率随着水流速度的增加而变大,当模拟海水的流速达到3.0 m/s后,腐蚀速率迅速增大且合金表面破坏严重,有蚀坑出现。流速不同时钝化膜形成时间不同,当模拟海水的流速为1.5 m/s时,B10铜镍合金管材初期的腐蚀速率高于后期,冲刷96 h后开始形成钝化膜;当模拟海水的流速为3.0 m/s时,腐蚀速率达到最大,并且B10铜镍合金管材在冲刷192 h后才开始形成钝化膜,但是钝化膜很不稳定,容易被破坏。
[Abstract]:The erosion corrosion behavior of B10 copper-nickel alloy pipe in flowing artificial seawater was studied by using a self-made artificial seawater pipe erosion test machine. The results show that the corrosion rate of B10 copper-nickel alloy pipes increases with the increase of flow velocity when the scour time is the same. When the velocity of simulated seawater reaches 3.0 m / s, the corrosion rate increases rapidly and the alloy surface is destroyed seriously, and the corrosion pits appear. When the velocity of simulated seawater was 1.5 m / s, the initial corrosion rate of B10 copper-nickel alloy pipe was higher than that of later stage, and the passivation film began to form after 96 h of scouring, and when the velocity of simulated seawater was 3.0 m / s, the passivation film was formed at the same time. The corrosion rate of B10 copper-nickel alloy pipe was maximum and the passivation film was formed only after washing for 192 h, but the passivation film was unstable and easy to be destroyed.
【作者单位】：河南科技大学材料科学与工程学院;河南科技大学河南省有色金属材料科学与加工技术重点实验室;河南科技大学有色金属共性技术河南省协同创新中心;中南大学材料科学与工程学院;
【基金】：国家自然科学基金项目(U1502274,51605146) 国家重点研发计划基金项目(2016YFB0301401) 河南省高校科技创新团队基金项目(14IRTSTHN007)
【分类号】：TG172.5

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