Corrosion and Wear Resistance of HVOF-Sprayed Ni-Cr-Co Multi-principal Element Alloy Coating on Copper Plate

IF 3.2 3区材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS

Journal of Thermal Spray Technology Pub Date : 2024-05-16 DOI:10.1007/s11666-024-01788-2

Dongbao Huang, Zhenlin Xu, Yizhu He, Ming Liu, Xiquan Jia, Tingwei Zhou

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Abstract

The development of protective coatings on copper alloy surfaces represents a critical research direction to enable the widespread industrial application of copper alloys. To improve the corrosion resistance and wear resistance of the copper alloy plates, a Ni-Cr-Co-based multi-principal element alloy coating was prepared via high-velocity oxygen fuel (HVOF). Then, the microstructure, corrosion resistance, and wear resistance of the Ni-Cr-Co coating and the electroplated NiCo coating were analyzed comparatively. The research results show that the phases of the Ni-Cr-Co coating contained face-centered cubic (FCC) solid solution, CrB and M₂₃C₆. The NiCo coating exhibited a single-phase FCC solid solution structure. Compared to the NiCo coating, the corrosion current density of the Ni-Cr-Co coating was reduced by 92.1% in NaF solution. A highly protective passive film was formed on the Ni-Cr-Co coating, and its low ΣCSL grain boundary proportion reached as high as 25.7%. Therefore, the Ni-Cr-Co coatings demonstrated superior corrosion resistance. The scratch wear coefficient of the Ni-Cr-Co coating was only 51.9% of that of the NiCo coating, due to the synergistic strengthening of the matrix and hard second phase. This research offers technical support and a theoretical basis foundation for the development of coatings on copper alloys with excellent corrosion resistance and wear resistance.

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铜板上的 HVOF 喷射 Ni-Cr-Co 多主元素合金涂层的耐腐蚀性和耐磨性

铜合金表面保护涂层的开发是铜合金广泛工业应用的一个重要研究方向。为了提高铜合金板的耐腐蚀性和耐磨性，研究人员通过高速氧气燃料（HVOF）制备了一种镍铬钴基多主元素合金涂层。然后，比较分析了 Ni-Cr-Co 涂层和电镀 NiCo 涂层的微观结构、耐腐蚀性和耐磨性。研究结果表明，镍铬钴镀层中含有面心立方（FCC）固溶体、CrB 和 M23C6。镍钴镀层呈现单相 FCC 固溶体结构。与镍钴涂层相比，镍铬钴涂层在 NaF 溶液中的腐蚀电流密度降低了 92.1%。镍铬钴涂层上形成了一层高保护性的被动膜，其低ΣCSL 晶界比例高达 25.7%。因此，Ni-Cr-Co 涂层具有优异的耐腐蚀性。由于基体和硬质第二相的协同强化作用，Ni-Cr-Co 涂层的划痕磨损系数仅为 NiCo 涂层的 51.9%。这项研究为开发具有优异耐腐蚀性和耐磨性的铜合金涂层提供了技术支持和理论基础。

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来源期刊

Journal of Thermal Spray Technology 工程技术-材料科学：膜

CiteScore

5.20

自引率

25.80%

发文量

198

审稿时长

2.6 months

期刊介绍： From the scientific to the practical, stay on top of advances in this fast-growing coating technology with ASM International''s Journal of Thermal Spray Technology. Critically reviewed scientific papers and engineering articles combine the best of new research with the latest applications and problem solving. A service of the ASM Thermal Spray Society (TSS), the Journal of Thermal Spray Technology covers all fundamental and practical aspects of thermal spray science, including processes, feedstock manufacture, and testing and characterization. The journal contains worldwide coverage of the latest research, products, equipment and process developments, and includes technical note case studies from real-time applications and in-depth topical reviews.