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Surface morphology and crystal orientation of electrodeposited tungsten coatings with different pulse parameters

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Abstract

This study was conducted to investigate the influence of pulse parameters on the surface morphology and crystal orientation of the tungsten coatings electrodeposited on pure copper substrates. The deposited coatings were analyzed by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy-dispersive spectrometer (EDS). SEM analysis indicates that pulse parameters have significant influences on the surface morphology of the deposited coatings. Meanwhile, the change in grain size of the tungsten coatings demonstrates that the change in frequency and duty cycle could cause the variation of nucleation rate and grain growth of deposits. Moreover, no obvious diffusion layer at the coating/substrate interface is found by line analysis of EDS. XRD results reveal that tungsten coatings are of bcc structure and the preferred orientation of the deposits varies with duty cycle and period.

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Acknowledgements

This work was financially supported by the National Magnetic Confinement Fusion Program of China (No. 2015GB109003) and the National Natural Science Foundation of China (Nos. 51171006 and 51471015).

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Authors and Affiliations

  1. Beijing Key Laboratory of Advanced Nuclear Energy Materials and Physics, School of Physics and Nuclear Energy Engineering, Beihang University, Beijing, 100191, China

    Xian-Qin Fang, Ying Zhang, Kai-Gui Zhu, Wen-Jia Han, Jian-Gang Yu, Zhe Chen & Hui-Jun Shi

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  1. Xian-Qin Fang
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  2. Ying Zhang
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Correspondence to Ying Zhang.

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Fang, XQ., Zhang, Y., Zhu, KG. et al. Surface morphology and crystal orientation of electrodeposited tungsten coatings with different pulse parameters. Rare Met. 37, 407–412 (2018). https://doi.org/10.1007/s12598-016-0825-1

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  • DOI: https://doi.org/10.1007/s12598-016-0825-1

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