Ni-Co-CeO2复合镀层在900 ℃下的恒温氧化行为

刘文琪，高祎翡，张鹏，阳颖飞，王启伟

暨南大学先进耐磨蚀及功能材料研究院

通信作者: 阳颖飞，博士，研究员，从事表面处理、金属功能涂层、金属材料的腐蚀与防护，E-mail：yfyang@jnu.edu.cn

Isothermal Oxidation Behavior of Ni-Co-CeO₂ Coating at 900 ℃

LIU Wenqi, GAO Yifei, ZHANG Peng, YANG Yingfei, WANG Qiwei

Institute of Advanced Wear & Corrosion Resistant and Functional Materials, Jinan University

Corresponding authors: YANG Yingfei, Ph.D., Professor, Research Focus: Surface Treatment, Metallic Functional Coatings, Corrosion and Protection of Metallic Materials, E-mail: yfyang@jnu.edu.cn

文章历史：收稿日期：2025-03-21

摘  要

通过复合电沉积方法制备了Ni-Co-CeO₂镀层，并研究了其在900 ℃下的恒温氧化行为，以提升海洋高温环境下部件的耐腐蚀性能。实验以低碳钢为基材，经切割、打磨、除油碱洗和酸洗活化等预处理后，分别在酸性镀液中制备了Ni-Co、Ni-CeO₂及Ni-Co-CeO₂镀层，采用脉冲电源以优化镀层致密性。随后对3种镀层进行900 ℃恒温氧化测试，通过XRD、SEM、XPS等手段分析其氧化过程中的组织结构演变。结果表明，Ni-Co-CeO₂镀层在100 h氧化后表现出最优异的抗高温氧化性能，其氧化速率常数最低（3.8×10⁻⁴ mg⁻²·cm⁻⁴·h⁻¹），氧化膜致密且厚度最薄（1.53×10³ μm），表面粗糙度最小（Ra=0.44 μm）。Co的加入促进了连续氧化膜的形成，有效抑制了氧扩散；CeO₂延缓了Fe₃O₄向Fe₂O₃的转变，降低了氧化膜内应力，减少了氧化膜的剥落风险。

Abstract

Ni-Co-CeO₂ coatings were fabricated via composite electrodeposition to investigate their isothermal oxidation behavior at 900 ℃ for enhancing the corrosion resistance of marine components under high-temperature conditions. Using low-carbon steel as the substrate, the samples were pretreated through cutting, grinding, alkaline degreasing, and acid activation. Ni-Co, Ni-CeO₂, and Ni-Co-CeO₂ coatings were subsequently prepared in acidic plating baths, with pulse power employed to optimize coating densification. The coatings underwent isothermal oxidation testing at 900 ℃, and their microstructural evolution was analyzed using XRD, SEM, and XPS. Results demonstrated that the Ni-Co-CeO₂ coating exhibited superior high-temperature oxidation resistance after 100 h, achieving the lowest oxidation rate constant (3.8×10⁻⁴ mg⁻²·cm⁻⁴·h⁻¹), the thinnest and most compact oxide layer (1.53×10³ μm), and the smallest surface roughness (Ra=0.44 μm). The incorporation of Co facilitated the formation of a continuous oxide film, effectively inhibiting oxygen diffusion, while CeO₂ delayed the transformation of Fe₃O₄ to Fe₂O₃, reducing internal stress and minimizing spallation risks.

关键词

Ni-Co镀层 ; CeO₂ ; 海洋腐蚀 ; 高温氧化 ; 复合电沉积

Keywords

Ni-Co coating ; CeO₂ ; marine corrosion ; high temperature oxidation ; composite electrodeposition

引用本文

刘文琪, 高祎翡, 张鹏, 阳颖飞, 王启伟. Ni-Co-CeO₂复合镀层在900 ℃下的恒温氧化行为[J]. 表面工程与再制造, 2025, 25(4): 18-29. https://doi.org/10.26935/j.issn.2097-5317.2025.0021

LIU Wenqi, GAO Yifei, ZHANG Peng, YANG Yingfei, WANG Qiwei. Isothermal Oxidation Behavior of Ni-Co-CeO₂ Coating at 900 ℃[J]. Surface Engineering & Remanufacturing, 2025, 25(4): 18-29. https://doi.org/10.26935/j.issn.2097-5317.2025.0021

中图分类号

TG174.4

基金项目

国家重点研发计划(2023YFB3408200)；装备预研教育部联合基金(8091B042313)

【全文下载】