一种<strong>Cu-Zn</strong>基高熵合金在硬水中的腐蚀行为研究

doi:10.11902/1005.4537.2025.148

中国腐蚀与防护学报

2026, Vol. 46

Issue (2): 601-610 CSTR: 32134.14.1005.4537.2025.148 DOI: 10.11902/1005.4537.2025.148

研究报告

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一种Cu-Zn基高熵合金在硬水中的腐蚀行为研究

严建成¹, 冯向东², 卢得勇¹, 李进¹(

), 孟鹏军¹, 娄宝辉², 郭健¹, 李正涛³, 朱正旺³

^1.浙江浙能兰溪发电有限责任公司金华 321100
^2.浙江浙能技术研究院有限公司杭州 311121
^3.东北大学冶金学院先进亚稳金属材料研究中心沈阳 110819

Corrosion Behavior of a Novel Cu-Zn Based High Entropy Alloy in an Artificial Hard Water

YAN Jiancheng¹, FENG Xiangdong², LU Deyong¹, LI Jin¹(

), MENG Pengjun¹, LOU Baohui², GUO Jian¹, LI Zhengtao³, ZHU Zhengwang³

^1.Zhejiang Zheneng Lanxi Electric Power Generation Co. Ltd. , Jinhua 321100, China
^2.Zhejiang Energy R&D Institute, Hangzhou 311121, China
^3.Research Center of Advanced Metastable Metallic Materials, School of Metallurgy, Northeastern University, Shenyang 110819, China

引用本文:

严建成, 冯向东, 卢得勇, 李进, 孟鹏军, 娄宝辉, 郭健, 李正涛, 朱正旺. 一种Cu-Zn基高熵合金在硬水中的腐蚀行为研究[J]. 中国腐蚀与防护学报, 2026, 46(2): 601-610.
Jiancheng YAN, Xiangdong FENG, Deyong LU, Jin LI, Pengjun MENG, Baohui LOU, Jian GUO, Zhengtao LI, Zhengwang ZHU. Corrosion Behavior of a Novel Cu-Zn Based High Entropy Alloy in an Artificial Hard Water[J]. Journal of Chinese Society for Corrosion and protection, 2026, 46(2): 601-610.

全文: PDF(12727 KB) HTML

摘要:

针对传统阻垢合金在硬水中普遍存在的脱锌失效问题，设计并制备了多组元Cu-Zn基高熵合金(Cu-Zn HEA)阻垢材料。以商用KDF55 (Cu85Zn15，质量分数，%)合金为对照组，研究了Cu-Zn基高熵合金在一种人工硬水中的腐蚀行为。电子背散射衍射(EBSD)分析表明，该高熵合金呈现单相面心立方(FCC)固溶体结构。电化学测量结果显示：Cu-Zn基高熵合金的自腐蚀电流密度(I_corr)为(2.37 ± 0.39) µA·cm^-2，较对照组降低40%；在时长15 d的浸泡实验中，其平均腐蚀速率(V_corr)为(0.09 ± 0.01) mm·a^-1，降幅达61%。微观形貌表征与腐蚀产物分析表明，高熵合金表面生成富含Ni/Co/Fe氧化物的致密钝化膜，腐蚀损伤轻微；而KDF55合金则发生显著均匀腐蚀，并伴随严重脱锌现象。研究结果为高稳定性阻垢合金的研发提供了有意义的参考。

关键词 ： Cu-Zn基高熵合金, 阻垢合金, 耐腐蚀性能, 脱锌, 钝化膜

Abstract：

To resolve the pervasive dezincification failure of conventional scale-resistant alloys in hard water environments, herein, a multicomponent Cu-Zn based high-entropy alloy (HEA) as an advanced anti-scaling material was designed and prepared via vacuum induction furnace smelting and casting. Then the corrosion behavior of Cu-Zn based HEA in an artificial hard water was assessed comparatively with a commercial Cu-Zn based KDF55 alloy. Electron backscatter diffraction (EBSD) results confirmed that the HEA exhibits a microstructure of single solid solution phase with face-centered cubic (FCC) crystal structure. Electrochemical measurements demonstrated that the HEA alloy presented superior corrosion resistance, with a free-corrosion current density (I_corr) of (2.37 ± 0.39) µA·cm^-2, which was 40% lower than the KDF55 alloy. In contrast to KDF55, the HEA exhibited an average corrosion rate (V_corr) of (0.09 ± 0.01) mm·a^-1, which was 61% lower. Microstructural characterization and corrosion product analysis revealed that the HEA surface developed a dense passive film enriched with Ni/Co/Fe oxides, resulting in minimal corrosion damage. In contrast, the KDF55 alloy exhibited pronounced uniform corrosion accompanied by severe dezincification. This work provides a good reference for the further research and development of highly stable anti-scaling alloys.

Key words： Cu-Zn based high entropy alloys anti-scaling alloys corrosion resistance dezincification passive film

收稿日期: 2025-05-14 32134.14.1005.4537.2025.148

ZTFLH:

TG139

基金资助:浙江省能源集团有限公司科技计划(ZNKJ-2023-012);中国博士后科学基金(2022M712738)

通讯作者: 李进，E-mail：408783630@qq.com，研究方向为火电厂环保

作者简介: 严建成，男，1975年生，本科，高级工程师

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	严建成
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https://www.jcscp.org/CN/10.11902/1005.4537.2025.148 或 https://www.jcscp.org/CN/Y2026/V46/I2/601

图1 Cu-Zn基高熵合金组织分析

图2 KDF55合金和Cu-Zn基高熵合金在硬水中的EIS曲线及等效电路图

表1 KDF55合金和Cu-Zn基高熵合金在硬水中的EIS曲线拟合数据

图3 KDF55合金和Cu-Zn基高熵合金在硬水溶液中的动电位极化测量结果

图4 KDF55合金和Cu-Zn基高熵合金在硬水溶液中浸泡15 d后的表面形貌及相应EDS谱图

图5 KDF55合金和Cu-Zn基高熵合金在硬水溶液浸泡15 d后的截面形貌及相应EDS谱图

图6 KDF55合金和Cu-Zn基高熵合金在硬水中浸泡15 d的平均腐蚀速率

图7 KDF55合金浸泡15 d后的腐蚀产物分析

表2 Cu-Zn基高熵合金的表面腐蚀产物及相应结合能

图8 Cu-Zn基高熵合金浸泡15 d后表面腐蚀产物的XPS图谱

图9 Cu-Zn基高熵合金腐蚀产物膜组成成分及相对含量

图10 KDF55合金和Cu-Zn基高熵合金在硬水溶液中的腐蚀机制示意图

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