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Structure and properties of Nb3Sn coatings produced by unsteady-current electrocodeposition of Nb and Sn

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Inorganic Materials Aims and scope

Abstract

We have studied the effect of electric-current mode on the structure and characteristics of niobium stannide coatings produced by electrochemical coreduction of niobium and tin ions at the cathode in molten salts. The results demonstrate that single-phase Nb3Sn coatings with a superconducting transition temperature T c = 17.3–17.9 K can be obtained using unsteady-current deposition. The coatings produced in galvanostatic mode and by ac deposition at a frequency of 50 Hz have a columnar grain structure. Current-reversal deposition with pulse ratios above 7–9 results in a layered microstructure with layers parallel to the substrate surface, instead of the columnar microstructure, and ensures a considerably higher critical current.

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Authors and Affiliations

  1. Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials, Kola Scientific Center, Russian Academy of Sciences, ul. Fersmana 26a, Apatity, Murmansk oblast, 184209, Russia

    V. N. Kolosov

  2. Sintez Research and Production Center, Moscow, Russia

    A. A. Shevyrev

Authors
  1. V. N. Kolosov
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  2. A. A. Shevyrev
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Correspondence to V. N. Kolosov.

Additional information

Original Russian Text © V.N. Kolosov, A.A. Shevyrev, 2009, published in Neorganicheskie Materialy, 2009, Vol. 45, No. 9, pp. 1079–1085.

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Kolosov, V.N., Shevyrev, A.A. Structure and properties of Nb3Sn coatings produced by unsteady-current electrocodeposition of Nb and Sn. Inorg Mater 45, 1003–1008 (2009). https://doi.org/10.1134/S0020168509090118

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  • DOI: https://doi.org/10.1134/S0020168509090118

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