Refractory Metals in Molten Salts

1. Front Matter

   Pages i-xiii

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2. Thermodynamics of niobium chlorides and mixtures with alkali chlorides

   • M. Gaune-Escard

   Pages 1-7

3. Interrelation between the Composition and Structure of Metaphosphate Polyhedra of Molybdenum and Tungsten in the Case of Electrodeposition of Metals and their Alloys

   • N. I. Buryak, V. A. Bandur, S. V. Volkov

   Pages 9-15

4. High Performance Coating of Steel with Tantalum Boride Layers

   • H. Vetters, J. Christensen

   Pages 17-29

5. Electrochemical and UV-Visible Spectroscopic Studies of Refractory Metals in Chloride Melts

   • J. Bouteillon, J. C. Gabriel, T. Galvez, J. C. Poignet, D. Vulpescu, T. R. Griffiths et al.

   Pages 31-42

6. High Temperature 93Nb NMR Study of Liquid NbCl5 and its Mixtures with Various Alkali Chlorides

   • E. Schellkes, M. Holz, W. Freyland

   Pages 43-60

7. Electrochemistry of Refractory Metals: Hf, Mo, Cr

   • N. Adhoum, L. Arurault, J. Bouteillon, A. Cotarta, J. C. Gabriel, J. C. Poignet

   Pages 61-72

8. Deposition of Titanium, Zirconium and Hafnium Diboride Coatings by High-Temperature Electrochemical Synthesis from Chloro-Fluoride Melts

   • S. V. Devyatkin, G. Kaptay, V. I. Shapoval, I. V. Zarutskii, V. P. Lugovoi, S. A. Kuznetsov

   Pages 73-80

9. The Synthesis of Borides, Carbides and Silicides of Refractory Metals in Ionic-Electronic Melts

   • N. I. Shurov, A. I. Anfinogenov, V. V. Chebykin, L. P. Klevtsov, E. G. Kazanskii

   Pages 81-86

10. Physicochemical Properties of the Molten System KF-KCl-KBF4-K2TiF6

    • M. Chrenková, V. Daněk, A. Silný, D. K. Nguyen

    Pages 87-101

11. Study of Electrode Processes in Flinak-K2TaF7 — KBF4 Melt

    • L. P. Polyakova, E. G. Polyakov, G. A. Bukatova, A. A. Shevyryov, O. V. Makarova, N. J. Bjerrum

    Pages 103-108

12. The Common Regularities of Epitaxial Growth of Monocrystalline Molybdenum and Tungsten Electrodeposited from Molten Salts

    • N. O. Esina, A. M. Molchanov, Z. I. Valeev, A. N. Baraboshkin

    Pages 109-116

13. The Electrodeposition of Aluminum-Niobium Alloys from Chloroaluminate Electrolytes

    • G. R. Stafford, G. M. Haarberg

    Pages 117-130

14. Technology of Electrodeposition from Molten Salts for the Preparation of Electrode Materials Based on Refractory Metals

    • Pierre Taxil, B. Lafage, O. Boïko, P. Chamelot, K. Serrano

    Pages 131-142

15. New Compounds [Nb4O3(O, F)2].n[K1-x (F,O)] (n=1,2,3) Obtained by Molten Salts Electrolysis

    • A. V. Arakcheeva, V. V. Grinevitch, E. G. Polyakov, S. A. Kuznetsov

    Pages 143-152

16. Electrochemical Processes as a Sum of Chemical Equations

    • V. G. Kremenetskiy

    Pages 153-158

17. Role of the Oxoacidity and Ligand Effect in the Electrowinning of Titanium in Fused Salts

    • F. Lantelme, A. Barhoun, K. Kuroda

    Pages 159-172

18. Influence of a Gaseous Atmosphere on Anodic Processes of Glassy-Carbon and Gold Electrodes in NaCl-KCl-Na2CO3 Melt

    • N. M. Barbin, V. N. Necrasov, D. I. Terentiev, A. P. Pekar

    Pages 173-182

19. Mechanism of the Molybdenum Electrodeposition from Molten Salts

    • A. Silný, V. Daněk, M. Chrenková

    Pages 183-187

20. Chemical Reactions Accompanying the Processes of Refractory Metal Electrodeposition

    • S. A. Kuznetsov

    Pages 189-196

This NATO Advanced Research Workshop was devoted to a specialized topic in molten salt chemistry and was held in an exotic location (as far as Westerners were concerned) well within the Arctic Circle. It nevertheless facilitated a fruitful week, both ofscience and ofhuman contacts. The 42 oral presentations and posters from nine countries enabled the 59 participants to learn a great deal about many areas of recent research in the molten salt chemistry of refractory metals, while making new contacts as well as renewing old friendships. The time ofinformal contact ledto the beginningofa numberofnew research cooperations with interchangeofpersonnel. Thus the twin aimsofadvancing science and improving East-West understanding were both amply fulfilled. Indeed a warm and happy family atmosphere was very tangible doth during the scientific sessions and the social events, which participants, accompanying persons and local staffall enjoyed. This opportunity of living for a short time within the Arctic Circle was a novelty for most Westerners, who generally appreciated the very warm weather (the hottest for 20 years according to some residents), as well as the beautiful surroundings ofvery green birch/pine forest, rushing rivers,vast lakes and rounded mountains,frequently illuminated by wonderful sunsets. The evening barbeque beside Lake Imandra (100 km long) and the coach tour beside the beautiful White Sea dotted with islands in the Kandalaksha Recreational Area (National Park), to sample Pomor culture, dancing and fresh salmon soup, were high spots ofthe social programme.

• FLiNaK
• ITIES
• Ion
• Niob
• Rhenium
• Tantal
• Zirconium
• chemical reaction
• electrochemistry
• electrolysis
• electrolyte
• gold
• metals
• structure
• thermodynamics

• Department of Engineering Materials, University of Southampton, Southampton, UK

  David H. Kerridge

• Institute of Chemistry, Kola Science Centre, Russian Academy of Sciences, Apatity, Russia

  Evgeny G. Polyakov

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