流动海水冲刷下<strong>B10</strong>铜镍合金海水调节阀腐蚀特性研究

doi:10.11902/1005.4537.2025.084

中国腐蚀与防护学报

2026, Vol. 46

Issue (1): 283-290 CSTR: 32134.14.1005.4537.2025.084 DOI: 10.11902/1005.4537.2025.084

研究报告

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流动海水冲刷下B10铜镍合金海水调节阀腐蚀特性研究

马晓¹, 徐雪磊¹(

), 仝宏韬¹, 王鑫¹, 赵铭钰¹, 王璇¹, 沈杰², 刘广义¹(

)

^1.中国船舶集团有限公司第七二五研究所海洋腐蚀与防护全国重点实验室青岛 266237
^2.苏州德兰能源科技股份有限公司苏州 215131

Erosion-corrosion Characteristics of B10 Cu-Ni Alloy Seawater Control Valve in Flowing Seawater Conditions

MA Xiao¹, XU Xuelei¹(

), TONG Hongtao¹, WANG Xin¹, ZHAO Mingyu¹, WANG Xuan¹, SHEN Jie², LIU Guangyi¹(

)

^1.State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute, Qingdao 266237, China
^2.Suzhou Delan Energy Technology Co. Ltd., Suzhou 215131, China

引用本文:

马晓, 徐雪磊, 仝宏韬, 王鑫, 赵铭钰, 王璇, 沈杰, 刘广义. 流动海水冲刷下B10铜镍合金海水调节阀腐蚀特性研究[J]. 中国腐蚀与防护学报, 2026, 46(1): 283-290.
Xiao MA, Xuelei XU, Hongtao TONG, Xin WANG, Mingyu ZHAO, Xuan WANG, Jie SHEN, Guangyi LIU. Erosion-corrosion Characteristics of B10 Cu-Ni Alloy Seawater Control Valve in Flowing Seawater Conditions[J]. Journal of Chinese Society for Corrosion and protection, 2026, 46(1): 283-290.

全文: PDF(15544 KB) HTML

摘要:

B10铜镍合金因其良好的耐蚀性和抗冲刷性能，被广泛应用于船舶海水管路系统。然而，在流动海水环境中，其仍然面临冲刷腐蚀等问题。本文对B10铜镍合金海水调节阀在实际服役环境下的腐蚀行为进行研究，结合现场服役分析、腐蚀形貌表征及计算流体动力学模拟，系统探讨其冲刷腐蚀机理。结果表明，B10铜镍合金海水调节阀在不同开度下海水流场分布不均匀，局部方向流速超过8 m/s，显著高于其临界流速(3 m/s)，导致湍流程度加剧及剪切应力作用增强，高流速区域形成马蹄状腐蚀深坑，低流速区域形成鱼鳞状腐蚀。

关键词 ：海水调节阀, B10铜镍合金, 冲刷腐蚀

Abstract：

B10 Cu-Ni alloy is widely used in marine seawater pipeline systems due to its excellent corrosion and erosion resistance. However, in flowing seawater environments, it still faces challenges such as erosion-corrosion. Herein, the corrosion behavior of a B10 Cu-Ni alloy control valve in actual seawater service conditions was assessed by integrating field service analysis, corrosion morphology characterization, and computational fluid dynamics (CFD) simulations. The results indicate that the distribution of seawater flow velocity inside the control valve is highly non-uniform by different valve opening degrees. In certain regions, the local flow velocity exceeds 8 m/s, significantly surpassing the critical velocity of B10 Cu-Ni alloy, leading to intensified turbulence and shear stress effects. Consequently, high-flow regions develop horseshoe-shaped corrosion pits, while low-flow regions exhibit fish-scale-like corrosion patterns.

Key words： seawater control valve B10 Cu-Ni alloy erosion-corrosion

收稿日期: 2025-03-12 32134.14.1005.4537.2025.084

ZTFLH:

TG172

通讯作者: 徐雪磊，E-mail：15863119006@163.com，研究方向为海洋腐蚀与防护;
刘广义，E-mail：liugy@sunrui.net，研究方向为海洋腐蚀与防护

作者简介: 马晓，男，1987年生，博士，高级工程师

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链接本文:

https://www.jcscp.org/CN/10.11902/1005.4537.2025.084 或 https://www.jcscp.org/CN/Y2026/V46/I1/283

图1 海水调节阀结构示意图

图2 壁厚测试点位示意图

图3 阀壁不同位置的壁厚变化曲线

图4 阀体金相显微组织表征

图5 阀壁沿0点和6点方向剖面图

图6 阀壁3点和9点方向严重腐蚀区域内褐色产物局部放大图

图7 阀壁3点和9点方向严重腐蚀区域内褐色产物微观形貌和元素表征

图8 阀壁3点和9点方向严重腐蚀区域内腐蚀产物酸洗后微观形貌和元素表征

图9 SolidWorks软件模拟调节阀不同开度下阀体内海水流速分布场

图10 阀壁3点和9点方向服役时受海水冲刷腐蚀机理示意图

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