Al2O3增强Ni-Co基复合镀层的微观结构和性能研究

王宏宇, 王一雍, 王露彬, 梁智鹏

doi:10.16577/j.issn.1001-1560.2025.0062

材料保护 >

2025 , Vol. 58 >Issue 4: 78 - 89

DOI: https://doi.org/10.16577/j.issn.1001-1560.2025.0062

第14届全国青年表面工程学术会议专栏

Al₂O₃增强Ni-Co基复合镀层的微观结构和性能研究

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辽宁科技大学材料与冶金学院

梁智鹏(1992－)，博士，讲师，研究方向为金属腐蚀电化学，E-mail:zplneu＠163.com

收稿日期: 2024-05-29

修回日期: 2024-11-07

录用日期: 2024-11-08

网络出版日期: 2025-05-23

基金资助

国家自然科学基金项目(U23A20610)

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Study on the Microstructure and Properties of Al₂O₃ Reinforced Ni-Co Based Composite Coating

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(School of Materials and Metallurgy， Liaoning University of Science and Technology， Anshan 114051， China)

LIANG Zhipeng(1992－)， Ph.D.， Lecturer， Research Focus: Metal Corrosion Electrochemistry，E-mail:zplneu＠163.com

Received date: 2024-05-29

Revised date: 2024-11-07

Accepted date: 2024-11-08

Online published: 2025-05-23

Supported by

National Natural Science Foundation of China (U23A20610)

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摘要

提高结晶器铜板表面的抗摩擦磨损性能和耐腐蚀性能，对连铸结晶器的研发与改进具有重要的研究意义与研究价值。本研究在氨基磺酸盐体系中加入平均粒径为20 nm 的纳米Al2O3 颗粒制成镀液，超声辅助下在Cu-Cr-Zr合金基体表面电镀Ni-Co/Al2O3 纳米复合镀层，并通过摩擦磨损、高温氧化、显微硬度、结合力、耐腐蚀等测试对复合镀层进行性能表征。结果表明:最优工艺参数为电流密度5 A/dm2、镀液温度50 ℃、纳米Al2O3 浓度10 g/L、施镀时间1.00 h、超声功率200 W，机械搅拌500 r/min；此工艺下Ni-Co/Al2O3 纳米复合镀层表面显微硬度最高，组织排列最细小紧密，且纳米粒子分散均匀嵌入在基质金属中，无明显的团聚现象产生，微观形貌达到最优；超声辅助下所制备的Ni-Co/Al2O3 纳米复合镀层在400 ℃下具有优良的抗高温氧化能力；与Cu-Cr-Zr 合金、Ni-Co合金镀层相比，Ni-Co/Al2O3 纳米复合镀层具有最优的抗摩擦磨损性能和耐腐蚀性能。

关键词： Cu-Cr-Zr; Ni-Co/Al₂O₃纳米复合镀层; 显微硬度; 耐腐蚀性能; 抗摩擦磨损性能

本文引用格式

王宏宇, 王一雍, 王露彬, 梁智鹏 . Al₂O₃增强Ni-Co基复合镀层的微观结构和性能研究[J]. 材料保护, 2025 , 58(4) : 78 -89 . DOI: 10.16577/j.issn.1001-1560.2025.0062

Abstract

Enhancing the anti-friction and anti-wear and corrosion resistant properties of mold copper plates holds significant research significance and value for the development and improvement of continuous casting molds.In this study， a Ni-Co/Al2O3 nanocomposite coating was electrodeposited on the surface of a Cu-Cr-Zr alloy substrate with the assistance of ultrasonic during the electroplating process， and the plating bath was formulated by incorporating nano-Al2O3 particles with an average diameter of 20 nm into a sulfamate-based electrolyte system.Subsequently， the composite coating was systematically characterized through friction and wear testing， high-temperature oxidation evaluation，microhardness measurement， adhesion assessment， and corrosion resistance analysis.Results showed that the optimal process parameters were current density of 5 A/dm2， bath temperature of 50 ℃， nano-Al2O3 concentration of 10 g/L， deposition time of 1.00 h， ultrasonic power of 200 W， and mechanical stirring at 500 r/min.Under this process，the Ni-Co/Al2O3 nanocomposite coating exhibited the highest surface microhardness， the finest and most compact structure arrangement， the uniformly dispersed nanoparticles embedded in the metal matrix without obvious agglomeration， and the optimal microscopic morphology.Moreover， the Ni-Co/Al2O3 nanocomposite coating prepared with ultrasonic assistance had excellent high-temperature oxidation resistance at 400 ℃； Compared with Cu-Cr-Zr alloy and Ni-Co alloy coatings， Ni-Co/Al2O3 nanocomposite coating possessed the best anti-friction and anti-wear performance and corrosion resistance

Key words： Cu-Cr-Zr; Ni-Co/Al₂O₃ nanocomposite coating; microhardness; corrosion resistance; anti friction and wear performance

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