Al-10%RE (RE = Ce、Nd、Y、La)合金在典型海洋大气环境下的腐蚀行为研究

doi:10.11902/1005.4537.2025.099

中国腐蚀与防护学报

2026, Vol. 46

Issue (2): 365-380 CSTR: 32134.14.1005.4537.2025.099 DOI: 10.11902/1005.4537.2025.099

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Al-10%RE (RE = Ce、Nd、Y、La)合金在典型海洋大气环境下的腐蚀行为研究

谢睿¹^,²^,³^,⁴, 蒋全通¹^,²^,³^,⁴(

), 韩东晓⁵, 陈烨⁵, 刘万鹏⁵, 裴炎彤⁵, 段继周¹^,²^,³^,⁴, 侯保荣¹^,²^,³^,⁴

^1.青岛理工大学机械与汽车工程学院青岛 266520
^2.中国科学院海洋研究所海洋关键材料全国重点实验室青岛 266071
^3.三亚海洋生态环境工程研究院三亚 572000
^4.崂山实验室青岛 266237
^5.中国航天科工集团第二研究院六九九厂北京 100031

Corrosion Behavior of Al-10%RE (RE = Ce, Nd, Y, La) Alloys in Typical Marine Atmospheric Environments

XIE Rui¹^,²^,³^,⁴, JIANG Quantong¹^,²^,³^,⁴(

), HAN Dongxiao⁵, CHEN Ye⁵, LIU Wanpeng⁵, PEI Yantong⁵, DUAN Jizhou¹^,²^,³^,⁴, HOU Baorong¹^,²^,³^,⁴

^1.School of Mechanical and Automotive Engineering, Qingdao University of Technology, Qingdao 266520, China
^2.Key Laboratory of Advanced Marine Materials, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
^3.Sanya Institute of Oceanology, Sanya 572000, China
^4.Laoshan Laboratory, Qingdao 266237, China
^5.Factory, Second Research Academy, China Aerospace Science and Industry Corporation, Beijing 100031, China

引用本文:

谢睿, 蒋全通, 韩东晓, 陈烨, 刘万鹏, 裴炎彤, 段继周, 侯保荣. Al-10%RE (RE = Ce、Nd、Y、La)合金在典型海洋大气环境下的腐蚀行为研究[J]. 中国腐蚀与防护学报, 2026, 46(2): 365-380.
Rui XIE, Quantong JIANG, Dongxiao HAN, Ye CHEN, Wanpeng LIU, Yantong PEI, Jizhou DUAN, Baorong HOU. Corrosion Behavior of Al-10%RE (RE = Ce, Nd, Y, La) Alloys in Typical Marine Atmospheric Environments[J]. Journal of Chinese Society for Corrosion and protection, 2026, 46(2): 365-380.

全文: PDF(35183 KB) HTML

摘要:

将二元稀土铝合金Al-10%RE (RE = Ce、Nd、Y、La，质量分数)在三亚和青岛2个大气腐蚀试验站进行了大气环境暴露试验。通过测量质量损失、观察腐蚀形貌、分析腐蚀产物和进行电化学测试等手段研究其在典型海洋大气环境下的腐蚀行为。结果表明，110 d的试验周期内，2个试验站的腐蚀速率关系是青岛>三亚，这可能与大气中SO₂含量有关。4种铝合金腐蚀速率关系Al-10Nd > Al-10La > Al-10Y > Al-10Ce，这可能与其微观结构析出相的数量和分布有关。2个试验站的腐蚀都是以局部腐蚀为主，形成的腐蚀产物成分差别不明显，主要产物是Al₂O₃、AlO(OH)和Al(OH)₃。此外，青岛站还生成了少量Al₂(SO₄)₃。生成的腐蚀产物膜对腐蚀过程有一定影响，合金的保护能力会随着时间的推移而发生变化。

关键词 ：稀土铝合金, 海洋大气腐蚀, 工业大气, 暴露腐蚀, 腐蚀机理

Abstract：

The binary Al-alloy Al-10%RE (Ce, Nd, Y, La) was placed in two atmospheric corrosion test stations (Sanya and Qingdao) for the purpose of conducting atmospheric exposure tests. The corrosion behavior in typical marine atmospheric environments was studied by measuring mass loss, observing corrosion morphology, analyzing corrosion products and performing electrochemical tests. The findings demonstrated that the corrosion rate relationship between the two test stations was Qingdao > Sanya during the 110 d test cycle, which may be associated with the SO₂ content in the atmosphere. And the corrosion rate relationship of the four binary aluminium alloys is Al-10Nd > Al-10La > Al-10Y > Al-10Ce, which may be related to the number and distribution of their microstructural precipitated phases. The corrosion at the two test stations was mainly localized, and the composition of the corrosion products formed did not differ significantly, with the main products being Al₂O₃, AlO(OH) and Al(OH)₃. In addition, a small amount of Al₂(SO₄)₃ was generated at the Qingdao station. The corrosion product film that is generated exerts an effect on the corrosion process, and the protective ability of the alloy changes over time.

Key words： Al-RE alloys marine atmospheric corrosion industrial atmospheres exposure corrosion corrosion mechanisms

收稿日期: 2025-03-26 32134.14.1005.4537.2025.099

ZTFLH:

TG174

基金资助:山东省自然科学基金(ZR2024ME163);海南省崖州湾科技创新联合项目课题(2021CXLH0005);青岛海洋科学与技术国家实验室"问海计划"课题(2021WHZZB2301)

通讯作者: 蒋全通，E-mail：jiangquantong@qdio.ac.cn，研究方向为海洋腐蚀与防护

作者简介: 谢睿，女，1988年生，博士生

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https://www.jcscp.org/CN/10.11902/1005.4537.2025.099 或 https://www.jcscp.org/CN/Y2026/V46/I2/365

表1 合金的实际成分 (mass fraction / %)

表2 试验站的地理位置和试验期间的气象因素

表3 Al-10%RE合金在三亚站大气暴晒110 d后的失重率

表4 Al-10%RE合金在青岛站大气暴晒110 d后的失重率

图1 Al-10%RE合金在三亚站大气暴晒110 d后的表面形貌SEM图

图2 Al-10%RE合金在青岛站大气暴晒110 d后的表面形貌SEM图

图3 Al-10%RE合金在三亚站大气暴晒110 d并去除腐蚀产物后的表面形貌SEM图

图4 Al-10%RE合金在青岛站大气暴晒110 d并去除腐蚀产物后的表面形貌SEM图

图5 Al-10%RE合金在三亚站大气暴晒110 d后表面腐蚀产物的EDS成分分析

图6 Al-10%RE合金在三亚站大气暴晒110 d后的表面XRD图谱

图7 Al-10%RE合金在青岛站大气暴晒110 d后的表面腐蚀产物的EDS成分分析

图8 Al-10%RE合金在青岛站大气暴晒110 d后的表面XRD图谱

图9 Al-10%RE合金在三亚和青岛站大气暴晒110 d后的激光共聚焦形貌图

图10 在三亚和青岛站大气暴晒110 d后的Al-10%RE合金在天然海水中OCP测试结果

图11 在三亚和青岛站大气暴晒110 d后的Al-10%RE合金在天然海水中电化学阻抗测试结果

图12 阻抗曲线拟合简化的等效电路图

表5 在三亚站暴晒后的Al-10%RE合金的阻抗拟合参数

表6 在青岛站暴晒后的Al-10%RE合金的阻抗拟合参数

图13 在三亚和青岛站大气暴晒110 d后的Al-10%RE合金在天然海水中极化曲线测试结果

图14 Al-RE合金在大气暴露过程中的腐蚀机理示意图

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