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Electrodepositions on Tantalum in alkali halide melts

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Authors:
  • Barner, Jens H. Von ;
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    Department of Chemistry, Technical University of Denmark
  • Jensen, Annemette Hindhede ;
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    Department of Energy Conversion and Storage, Technical University of Denmark
  • Christensen, Erik
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    Orcid logo0000-0003-3265-3121
    Department of Energy Conversion and Storage, Technical University of Denmark
DOI:
10.1149/05011.0221ecst
Abstract:
Surface layers of tantalum metal were electrodeposited on steel from K 2TaF7-LiF-NaF-KF melts. With careful control of the oxide contents dense and adherent deposits could be obtained by pulse plating. In NaCl-KCl-NaF-Na2CO3 and NaCl-KCl-Na2CO 3 melts carbonate ions seems to be reduced to carbon in a single 4 electron step. By electrolyses at a constant potential of - 1.4 V vs. Pt in a NaCl-KCl-NaF-Na2CO3 melt at 800 °C coherent carbon containing surface layers could be obtained on tantalum substrates, when a CO2 atmosphere was applied. Copyright © 2012 by The Electrochemical Society.
Type:
Conference paper
Language:
English
Published in:
E C S Transactions, 2012, Vol 50, Issue 11, p. 221-224
Keywords:
Alkali halides; Carbon; Carbon dioxide; Electrodeposition; Fused salts; Ionic liquids; Tantalum
Main Research Area:
Science/technology
Publication Status:
Published
Review type:
Peer Review
Conference:
Pacific Rim Meeting on Electrochemical and Solid-State Science, 2012
Submission year:
2013
Scientific Level:
Scientific
ID:
239857458

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