Electrodeposition, microstructure, friction and electrochemical behavior of diamond-like carbon (DLC) films with Ni/Cu interlayer

IF 2.7 4区 材料科学 Q3 CHEMISTRY, PHYSICAL
Yan-ping Xiao, W. Sun, Minxing Ma, Y. Jia, Cong Zhang, Jing-pei Liu, Tong-qiang Zhang, Zerong Hou
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Abstract

Diamond-like carbon (DLC) films containing single copper (Cu), nickel (Ni) and double Ni/Cu interlayers were fabricated on LY-12 aluminum alloy by electrodeposition. The influences of different interlayers on the microstructure, microhardness, friction and wear properties and electrochemical behavior of the films were investigated respectively. The morphologies results show that the porosity of DLC films was reduced and the particles were refined after the introduction of double interlayer. Raman and XPS results confirm that the amorphous characteristics of DLC films containing nickel and copper interlayers were enhanced, and the content of sp3-C in the films was increased. In addition, the optimal micro-hardness of 210.67 HV was achieved due to the high sp3-C content of double Ni/Cu-DLC film. Meanwhile, the Ni/Cu-DLC film possessed excellent wear resistance which benefits from the synergistic effect of copper and nickel interlayer. The nickel as the supporting layer and copper as the lubricating layer alleviated the wear and friction of the film. Simultaneously, the deposition of double interlayer increased the density of the film, which further prevented the invasion of corrosion ions,so the film had superior electrochemical properties.
Ni/Cu夹层类金刚石薄膜的电沉积、微观结构、摩擦和电化学行为
采用电沉积的方法在LY-12铝合金上制备了含有单铜(Cu)、镍(Ni)和双Ni/Cu中间层的类金刚石(DLC)薄膜。研究了不同夹层对薄膜微观结构、显微硬度、摩擦磨损性能和电化学性能的影响。形貌结果表明,双中间层的引入使DLC膜的孔隙率降低,颗粒细化。Raman和XPS结果证实,含镍和铜中间层的DLC薄膜的非晶态特性得到增强,薄膜中sp3-C的含量增加。此外,由于双Ni/Cu-DLC膜的sp3-C含量较高,获得了210.67 HV的最佳显微硬度。同时,由于铜和镍中间层的协同作用,Ni/Cu-DLC薄膜具有优异的耐磨性。镍作为支撑层,铜作为润滑层,减轻了膜的磨损和摩擦。同时,双中间层的沉积增加了膜的密度,进一步阻止了腐蚀离子的侵入,使膜具有优越的电化学性能。
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来源期刊
Surface Innovations
Surface Innovations CHEMISTRY, PHYSICALMATERIALS SCIENCE, COAT-MATERIALS SCIENCE, COATINGS & FILMS
CiteScore
5.80
自引率
22.90%
发文量
66
期刊介绍: The material innovations on surfaces, combined with understanding and manipulation of physics and chemistry of functional surfaces and coatings, have exploded in the past decade at an incredibly rapid pace. Superhydrophobicity, superhydrophlicity, self-cleaning, self-healing, anti-fouling, anti-bacterial, etc., have become important fundamental topics of surface science research community driven by curiosity of physics, chemistry, and biology of interaction phenomenon at surfaces and their enormous potential in practical applications. Materials having controlled-functionality surfaces and coatings are important to the manufacturing of new products for environmental control, liquid manipulation, nanotechnological advances, biomedical engineering, pharmacy, biotechnology, and many others, and are part of the most promising technological innovations of the twenty-first century.
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