[1]刘 军,曹瑞峰,李红斌,等.doi: 10.3969/j.issn.1001-3849.2026.04.008建筑用42CrMo钢表面锌铝合金镀层耐腐蚀性能[J].电镀与精饰,2026,(04):52-57.
　LIU Jun,CAO Ruifeng,LI Hongbin,et al.Corrosion resistance of zinc-aluminum alloy coating on 42CrMo steel surface for construction[J].Plating & Finishing,2026,(04):52-57.
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doi: 10.3969/j.issn.1001-3849.2026.04.008建筑用42CrMo钢表面锌铝合金镀层耐腐蚀性能()

《电镀与精饰》[ISSN:1001-3849/CN:12-1096/TG]

卷:
期数:
2026年04
页码:
52-57
栏目:
出版日期:
2026-04-30

文章信息/Info

Title:
Corrosion resistance of zinc-aluminum alloy coating on 42CrMo steel surface for construction
作者:
刘 军1; 曹瑞峰2; 李红斌3; 乔光华4
(1. 周口职业技术学院 建筑与港航学院 河南 周口 466002 ;2. 黄河交通学院 智能交通与智能建造工程学院 河南 焦作 454950 ;3. 河南理工大学 能源科学与工程学院 河南 焦作 454003 ;4. 郑州升达经贸管理学院 建筑工程学院 河南 郑州 450000)
Author(s):
LIU Jun1;  CAO Ruifeng2;  LI Hongbin3;  QIAO Guanghua4
(1. School of Architecture and Harbour Engineering, Zhoukou Polytechnic, Zhoukou 466002, China; 2. College of Intelligent Transportation and Smart Constraction Engineering , Huanghe Jiaotong University, Jiaozuo 454950, China; 3. School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo 454003, China; 4. School of Architectural Engineering, Zhengzhou Shengda University, Zhengzhou 450000, China)
关键词:
42CrMo钢; 耐腐蚀性; 锌铝合金; 电化学
Keywords:
42CrMo steel;  corrosion resistance;  zinc-aluminum alloy;  electrochemistry
分类号:
TQ050 TG178
文献标志码:
A
摘要:
42CrMo钢作为建筑承重构件的常用材料，在潮湿、盐雾等腐蚀性环境中易发生锈蚀。为提升钢材在恶劣环境中的抗腐蚀能力，延长建筑结构服役寿命并降低维护成本，本研究在42CrMo钢表面制备锌铝合金镀层，探究铝粉含量(0%～54%)对镀层耐腐蚀性能的影响。通过盐性、碱性和酸性环境下的微观形貌分析、腐蚀速率测试及电化学性能评估，揭示镀层的耐腐蚀机制。结果表明，铝粉含量为45%时，镀层微观形貌致密均匀、腐蚀速率最低，表现出最优异的耐腐蚀性能；铝粉含量不足会导致镀层致密性降低，而过量(54%)则引发材料团聚，均会削弱耐腐蚀性能。在不同腐蚀介质中，镀层在盐雾环境中的腐蚀速率最低，酸性环境中最高。电化学测试表明，随腐蚀时间延长，腐蚀电位负移且电流密度增大，其中酸性环境中的变化最为显著。本研究为建筑钢材表面防护提供了优化方案。
Abstract:
As a commonly used material for building load-bearing components, 42CrMo steel is prone to rusting in corrosive environments such as humidity and salt spray. To enhance the corrosion resistance of steel in harsh environments, extend the service life of building structures, and reduce maintenance costs, a zinc aluminum alloy coating on the surface of 42CrMo steel was prepared. The effects of aluminum powder content (0%～54%) on the corrosion resistance of the coating were investigated. Through microscopic morphology analysis, corrosion rate testing, and electrochemical performance evaluation in salt, alkaline, and acidic environments, the corrosion resistance mechanism of the coating was revealed. The results show that when the aluminum powder content is 45%, the microstructure of the coating is dense and uniform, the corrosion rate is the lowest, and it exhibits the most excellent corrosion resistance. Insufficient aluminium powder content leads to a decrease in the compactness of the coating, while excessive amounts (54%) cause material agglomeration, both of which weaken the corrosion resistance. Among different corrosive media, the corrosion rate of the coating is the lowest in a salt spray environment and the highest in an acidic environment. Electrochemical tests show that as the corrosion time extends, the corrosion potential shifts more negatively and the current density increases, among which the changes are most significant in an acidic environment. This study provides an optimized solution for the surface protection of construction steel

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更新日期/Last Update: 2026-04-15