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Performance of Electrodeposited Tungsten Coating on Low Activation Steel Substrate

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Abstract

Compact and smooth tungsten coatings on low activation steel substrates were successfully prepared by electrodeposition from Na2WO4–WO3 molten salt at 1173 K in the air. The effects of plating time on the performance of tungsten coating were investigated. The surface morphology showed that tungsten grains changed from the amorphous into regular hexagonal over time. The prepared tungsten coatings were highly (2 1 1)-orientated and exhibited body centered cubic structure via XRD characterization. The thickest tungsten coating (387 ± 15.72 μm) was achieved with the plating time of 40 h. Besides, the tungsten coating displayed acceptable hardness of 389.3 ± 16.8 HV and high adhesive strength to the substrate of 43.39 MPa. Furthermore, the tungsten coatings can stand more than 150 times thermal circles under 773 K, and 20 times under 1023 and 1173 K.

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Acknowledgments

The study was supported by International Thermonuclear Experimental Reactor (ITER) Project of China (No. 2014GB123000).

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Authors and Affiliations

  1. School of Materials Science and Engineering, University of Science and Technology Beijing, 30 Xueyuan Road, Haidian District, Beijing, 100083, People’s Republic of China

    Ningbo Sun, Yingchun Zhang, Shaoting Lang, Lili Wang & Lijuan Wang

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  1. Ningbo Sun
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  2. Yingchun Zhang
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  3. Shaoting Lang
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  4. Lili Wang
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  5. Lijuan Wang
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Correspondence to Yingchun Zhang.

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Sun, N., Zhang, Y., Lang, S. et al. Performance of Electrodeposited Tungsten Coating on Low Activation Steel Substrate. J Fusion Energ 34, 1417–1422 (2015). https://doi.org/10.1007/s10894-015-9988-2

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