冷喷涂<strong>Cu-Ti</strong>伪合金防污材料的腐蚀行为

doi:10.11902/1005.4537.2024.347

中国腐蚀与防护学报

2025, Vol. 45

Issue (5): 1309-1319 CSTR: 32134.14.1005.4537.2024.347 DOI: 10.11902/1005.4537.2024.347

研究报告

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冷喷涂Cu-Ti伪合金防污材料的腐蚀行为

谷松伦¹, 张繁², 黄国胜²(

), 姜丹², 董国君¹

1 哈尔滨工程大学烟台研究院烟台 264000
2 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

Corrosion Behavior of Cold Spray Cu-Ti Pseudo Alloy as Anti-fouling Material in Natural Seawater

GU Songlun¹, ZHANG Fan², HUANG Guosheng²(

), JIANG Dan², DONG Guojun¹

1 Yantai Research Institute, Harbin Engineering University, Yantai 264000, China
2 National Key Laboratory of Marine Corrosion and Protection, Luoyang Ship Material Research Institute, Qingdao 266237, China

引用本文:

谷松伦, 张繁, 黄国胜, 姜丹, 董国君. 冷喷涂Cu-Ti伪合金防污材料的腐蚀行为[J]. 中国腐蚀与防护学报, 2025, 45(5): 1309-1319.
Songlun GU, Fan ZHANG, Guosheng HUANG, Dan JIANG, Guojun DONG. Corrosion Behavior of Cold Spray Cu-Ti Pseudo Alloy as Anti-fouling Material in Natural Seawater[J]. Journal of Chinese Society for Corrosion and protection, 2025, 45(5): 1309-1319.

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摘要:

构建了一种Cu-Ti伪合金微电偶体系，加速Cu的腐蚀速率提高其在海洋环境的防污效果，并进行了多种腐蚀电化学表征验证。采用冷喷涂方法制备了0%、5%、10%、15% (质量分数) 4种不同Ti含量的Cu-Ti伪合金防污材料，并对4种防污材料采用扫描电子显微镜(SEM)、能谱分析仪(EDS)、X射线衍射仪(XRD)进行微观形貌及成分检测。在天然海水中进行自腐蚀电位、动电位极化曲线电化学测试以及扫描振动电极(SVET)微区电化学测试，结合电感耦合等离子发射光谱分析仪(ICP)分析了Cu-Ti伪合金的腐蚀行为及腐蚀规律。结果表明，在天然海水中，试样表面Cu和Ti颗粒可形成微电偶对。随着Ti质量分数的增加，Cu和Ti颗粒组成的微原电池数量增加，防污材料腐蚀速率加快。Ti质量分数为15%时，腐蚀速率最快，Cu离子释放速率提高了近10倍，可达280 μg/(cm²·d)。该方法可以较好的加速Cu-Ti伪合金材料中Cu离子的释放，对提升铜合金的防污效果具有良好的促进作用。

关键词 ：冷喷涂, 紫铜, 微电偶腐蚀, 腐蚀行为, 海洋防污

Abstract：

Herein, as the candidate material of anti-fouling, four Cu-Ti pseudo alloys with different Ti contents (mass fraction) of 0%, 5%, 10%, and 15% were prepared by cold spraying method, and their microstructure and composition were characterized by SEM, EDS, and XRD. Meanwhile their corrosion performance in natural seawater is assessed by means of electrochemical measurements, namely free corrosion potential and potentiodynamic polarization curve, scanning vibration electrode (SVET) micro electrochemical measurement and inductively coupled plasma emission spectrum analyzer. Results indicated that in natural seawater, Cu particles and Ti particles on the surface of the prepared pseudo alloy Cu-Ti anode can naturally form micro galvanic couples. With the increase of Ti mass fraction, the corrosion rate of the prepared pseudo alloy Cu-Ti anode is accelerated due to the increased number of micro galvanic cells composed of Cu and Ti particles. When the Ti mass fraction is 15%, the corrosion rate is the fastest, and the copper ion release rate increases by nearly ten times, reaching 280 μg/(cm²·d). This method can effectively accelerate the release of Cu ions from the Cu-Ti pseudo alloy materials and promote their anti-fouling effect.

Key words： cold spray pure copper micro-galvanic corrosion corrosion behavior marine anti-fouling

收稿日期: 2024-10-27 32134.14.1005.4537.2024.347

ZTFLH:

TG172

基金资助:国家自然科学基金(U2141251)

通讯作者: 黄国胜，E-mail：huanggs@sunrui.net，研究方向为腐蚀与防护和冷喷涂技术

Corresponding author: HUANG Guosheng, E-mail: huanggs@sunrui.net

作者简介: 谷松伦，女，2000年生，硕士生

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图1 喷涂用粉末形貌

图2 TUP2和TA2粉末的粒径分布

图3 喷涂态和经热处理的Ti含量不同的Cu-Ti伪合金宏观形貌

图4 Ti含量不同的Cu-Ti伪合金表面微观形貌

图5 喷涂态Cu-Ti中Ti含量与原料粉中其名义含量的对比

图6 Cu-10Ti伪合金微观结构以及EDS线扫描和面扫描结果

图7 喷涂态Cu、Cu-5Ti、Cu-10Ti、Cu-15Ti的孔隙率

图8 原始粉末及试样表面XRD图谱

图9 Cu-Ti伪合金在天然海水中浸泡30 d后的腐蚀形貌

图10 电偶腐蚀原理图

图11 Cu-Ti伪合金在天然海水中浸泡30 d后的XRD图谱

图12 Cu-Ti伪合金在天然海水中浸泡30 d后的开路电位

图13 Cu-Ti伪合金在刚浸入天然海水时的SVET图谱

图14 Cu-Ti伪合金在天然海水中浸泡24 h后的SVET图谱

图15 4种试样在天然海水中的Cu离子溶出速率

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