<strong>B10</strong>铜合金超双疏表面的制备及其性能研究

doi:10.11902/1005.4537.2023.290

中国腐蚀与防护学报

2024, Vol. 44

Issue (4): 909-917 CSTR: 32134.14.1005.4537.2023.290 DOI: 10.11902/1005.4537.2023.290

研究报告

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B10铜合金超双疏表面的制备及其性能研究

张吉昊, 徐亚程, 贾学远, 高荣杰(

)

中国海洋大学材料科学与工程学院青岛 266100

Preparation and Corrosion Resistance of Superamphiphobic Surface on B10 Cu-alloy

ZHANG Jihao, XU Yacheng, JIA Xueyuan, GAO Rongjie(

)

School of Materials Science and Engineering, Ocean University of China, Qingdao 266100, China

引用本文:

张吉昊, 徐亚程, 贾学远, 高荣杰. B10铜合金超双疏表面的制备及其性能研究[J]. 中国腐蚀与防护学报, 2024, 44(4): 909-917.
Jihao ZHANG, Yacheng XU, Xueyuan JIA, Rongjie GAO. Preparation and Corrosion Resistance of Superamphiphobic Surface on B10 Cu-alloy[J]. Journal of Chinese Society for Corrosion and protection, 2024, 44(4): 909-917.

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摘要:

采用FeCl₃盐溶液刻蚀以及氟硅烷修饰的方法，在B10铜合金基体上成功制备出具有良好耐蚀性的超双疏表面，其对水与乙二醇的接触角分别为158°和151°。采用扫描电子显微镜(SEM)、激光扫描共聚焦显微镜(LSCM)、X射线衍射仪(XRD)、能谱仪(EDS)和X射线光电子能谱(XPS)等手段对其表面微观形貌、化学成分进行表征。通过电化学阻抗谱(EIS)测试以及Tafel极化曲线探究了超双疏试样的耐腐蚀性能。结果表明，相较于裸样，超双疏试样的自腐蚀电位正移至-0.248 V，腐蚀电流密度(I_corr = 2.05 × 10^-6 A·cm^-2)降低了一个数量级，展现出优异的耐腐蚀性能；在3.5%(质量分数)NaCl溶液中浸泡5 d后，超双疏试样的电荷转移电阻仍明显高于裸样，保持着较好的耐蚀性。

关键词 ：超双疏表面, B10铜合金, 化学刻蚀, 耐蚀性

Abstract：

A superamphiphobic surface film with good corrosion protection durability was successfully prepared on B10 Cu-alloy by chemical etching with 1.5 mol/L FeCl₃ solution and then modifying with 1H,1H,2H,2H-perfluorodecyltriethoxysilane. The contact angle of water and ethylene glycol on the prepared surface is 158° and 151° respectively. The morphology, chemical composition and corrosion resistance of the superamphiphobic surface film/B10 Cu-alloy were characterized by means of SEM, XRD, EDS and XPS as well as EIS test and Tafel polarization curve and electrochemical test. The results show that compared with the bare B10 Cu-alloy, the corrosion potential of the superamphiphobic surface film/B10 Cu-alloy is positively shifted to -0.248 V, its corrosion current density I_corr = 2.05 × 10^-6 A·cm^-2 decreases by one order of magnitude, and the charge transfer resistance increases by one order of magnitude, showing excellent corrosion resistance. The charge-transfer resistance of the superamphiphobic film/B10 Cu-alloy after immersion in 3.5%NaCl solution for 5 d is still significantly higher than that of the bare Cu-alloy, in other words, it still maintains good corrosion resistance.

Key words： superamphiphobic surface B10 copper alloy chemical etching anti-corrosion

收稿日期: 2023-09-12 32134.14.1005.4537.2023.290

ZTFLH:

TG174

基金资助:国家自然科学基金-山东省联合基金(U1706221)

通讯作者: 高荣杰，E-mail: dmh206@ouc.edu.cn，研究方向为海洋腐蚀与防护，阴极保护

Corresponding author: GAO Rongjie, E-mail: dmh206@ouc.edu.cn

作者简介: 张吉昊，男，1998年生，硕士生

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https://www.jcscp.org/CN/10.11902/1005.4537.2023.290 或 https://www.jcscp.org/CN/Y2024/V44/I4/909

图1 B10铜合金超双疏表面的制备流程示意图

图2 改变不同条件试样表面接触角变化情况

表1 不同处理阶段试样表面水和乙二醇接触角的变化

图3 裸样基体和超双疏试样表面形貌

图4 基底和超双疏试样的表面激光共聚焦成像

表2 基底和超双疏试样的表面粗糙度参数

图5 超双疏试样的XRD谱

图6 裸样以及超双疏试样的EDS面扫

图7 超双疏试样的XPS谱

图8 PFDTS修饰改性之后的超双疏表面的红外图谱

图9 裸样与超双疏试样的动电位极化曲线

图10 裸样和超双疏试样在3.5%NaCl溶液中的电化学测试

表3 电化学拟合参数

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