高电位金属管路系统对船体钢结构的电偶腐蚀影响分析

卢云飞, 郭倩, 胡凌越, 段国庆, 石鹏飞

doi:10.16577/j.issn.1001-1560.2025.0066

材料保护 >

2025 , Vol. 58 >Issue 4: 122 - 130

DOI: https://doi.org/10.16577/j.issn.1001-1560.2025.0066

研究论文

高电位金属管路系统对船体钢结构的电偶腐蚀影响分析

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武汉第二船舶设计研究所

卢云飞(1987－)，高级工程师，博士，主要研究方向为腐蚀与防护，E-mail: 675650695＠qq.com

收稿日期: 2024-08-01

修回日期: 2024-11-06

录用日期: 2024-11-07

网络出版日期: 2025-05-23

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Analysis of the Galvanic Corrosion Effect of High-Potential Metal Piping Systems on Hull Steel Structures

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(Wuhan Second Ship Design ＆ Research Institute， Wuhan 430064， China)

LU Yunfei (1987－)， Senior Engineer， Ph.D.， Research Focus: Corrosion and Protection， E-mail:675650695＠qq.com

Received date: 2024-08-01

Revised date: 2024-11-06

Accepted date: 2024-11-07

Online published: 2025-05-23

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摘要

为研究管路系统与船体结构的电偶腐蚀行为机制，针对钛合金管路系统在舰船领域中引发的电偶腐蚀问题，采用电化学测试、腐蚀仿真计算、模型腐蚀试验等手段，综合对比分析了钛合金管路系统与铜合金管路系统对船体钢结构的电偶腐蚀影响。结果表明:ZTi60、TC4、TA5 和船体钢的电偶对电偶电位最终分别稳定在－0.60、－0.68、－0.61 V 左右，电偶对电偶电流密度最终稳定值分别为5.58、10.11、5.84 μA/cm2，铜合金和船体钢的电偶电流密度最终稳定值则明显大于钛合金。钛合金管路系统或铜合金管路系统与船体钢结构偶接时均存在电偶腐蚀效应，需要做好电绝缘防护措施，但钛合金管路系统与船体钢结构偶接后的电偶腐蚀效应并不会强于铜合金管路系统与船体钢结构偶接后的电偶腐蚀效应。

关键词： 钛合金; 铜合金; 电偶腐蚀

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卢云飞, 郭倩, 胡凌越, 段国庆, 石鹏飞 . 高电位金属管路系统对船体钢结构的电偶腐蚀影响分析[J]. 材料保护, 2025 , 58(4) : 122 -130 . DOI: 10.16577/j.issn.1001-1560.2025.0066

Abstract

In order to investigate the galvanic corrosion behavior mechanism between piping systems and hull structures， focusing on the galvanic corrosion issues of titanium alloy piping systems in naval ship applications， a comprehensive comparative analysis of the galvanic corrosion effects on hull steel structures caused by titanium alloy and copper alloy piping systems was conducted using electrochemical testing，corrosion simulation calculations and model corrosion experiments.Results showed that the galvanic potentials of the ZTi60， TC4， TA5 and hull steel couples eventually stabilized at approximately－0.60，－0.68 and－0.61 V， respectively， with the final stable galvanic current densities being 5.58， 10.11 and 5.84 μA/cm2， respectively.Notably， the final stable current densities of the copper alloy couples were significantly higher than those of the titanium alloy couples.Both titanium alloy and copper alloy piping systems exhibited galvanic corrosion effects when coupled with hull steel structures， necessitating effective electrical insulation measures.Nonetheless， the galvanic corrosion effect of the titanium alloy piping system and steel hull structure was not more pronounced than that of the copper alloy piping system and steel hull structure.

Key words： titanium alloy; copper alloy; galvanic corrosion

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