Influence of the current density on the properties of electrodeposited Ni-W- Ti2AlC composite coatings

IF 1.5 Q2 ENGINEERING, MULTIDISCIPLINARY

Engineering Research Express Pub Date : 2024-08-11 DOI:10.1088/2631-8695/ad6a01

Lingling Liu, Mengyan Gao, Zixin Huang, Jiuhang Bai, Xiang Wang, Xiaoxian Li and Xuehui Zhang

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Abstract

In this work, Ni-W-Ti2AlC composite coatings with anti-wear and anti-corrosion abilities were prepared using direct current electrodeposition. The study primarily focuses on the influence of different current densities on the structure and properties of Ni-W-Ti2AlC composite coatings. The microstructural, mechanical properties, and electrochemical performances were studied by using SEM, XRD, EDS, and Tafel polarization techniques. The results indicated that Ti2AlC is successfully co-deposited into the Ni-W coating, and the average grain size of the Ni-W-Ti2AlC composite coating is 15.2 nm. The significant improvement in hardness, wear resistance, and corrosion resistance of Ni-W-Ti2AlC composite coating is attributed to the effects of solid solution strengthening and the uniform distribution of the microstructure. The suitable current density has a great influence on the properties. The microhardness of Ni-W-Ti2AlC composite coatings was increased by 99.59% at a current density of 5 A dm−2 compared to 3 A dm−2. At the same time, the friction coefficient decreased by 13.89%.

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电流密度对电沉积 Ni-W- Ti2AlC 复合涂层性能的影响

本研究采用直流电沉积法制备了具有抗磨损和抗腐蚀能力的 Ni-W-Ti2AlC 复合涂层。研究主要关注不同电流密度对 Ni-W-Ti2AlC 复合涂层结构和性能的影响。采用 SEM、XRD、EDS 和 Tafel 极化技术研究了涂层的微观结构、机械性能和电化学性能。结果表明，Ti2AlC 成功地共沉积到了 Ni-W 涂层中，Ni-W-Ti2AlC 复合涂层的平均晶粒尺寸为 15.2 nm。Ni-W-Ti2AlC 复合涂层硬度、耐磨性和耐腐蚀性的明显改善归功于固溶强化和微观结构均匀分布的影响。合适的电流密度对性能有很大影响。电流密度为 5 A dm-2 时，Ni-W-Ti2AlC 复合涂层的显微硬度比 3 A dm-2 时提高了 99.59%。同时，摩擦系数降低了 13.89%。

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来源期刊

Engineering Research Express Engineering-Engineering (all)

CiteScore

2.20

自引率

5.90%

发文量

192