Nickel and nickel alloys electrochemistry in cryolite-alumina melts

Тип публикации: доклад, тезисы доклада, статья из сборника материалов конференций

Конференция: Symposium on Light Metals held at the 2007 TMS Annual Meeting and Exhibition; Orlando, FL; Orlando, FL

Год издания: 2007

Ключевые слова: oxygen-evolving anodes, metals, nickel alloys, degradation mechanism

Аннотация: Voltammetric data and galvanostatic potential transients are compared for a wide range of Ni-containing alloys in cryolite melts (CR 1.8, 2.3 and 2.7) with 1-8 wt.% alumina. The specific features of alloys depend crucially on the nickel content. For 40 75 wt.% Ni alloyed with Fe, Cu and Al two general types of anode degradation are (1) low resistance of solid products and a tendency to internal corrosion resulting in formation of a porous metal layer,, (2) high resistance of solid products with pronounced suppression of oxygen evolution and appearance of rather high ohmic drop. The nature of fluorides, oxides and spinels responsible for both types of behavior is reported on the basis of XRD data, and two major formation mechanisms of these products are discussed in the context of predicting the most prospective combinations of alloy and melt compositions for electrolysis with low-consumption metallic anodes.

Ссылки на полный текст

Издание

Журнал: LIGHT METALS 2007

Номера страниц: 489-

ISSN журнала: 01470809

Место издания: WARRENDALE

Издатель: MINERALS, METALS & MATERIALS SOC

Авторы

  • Simakov D.A. (Engn & Technol Ctr Ltd, Krasnoyarsk, Russia)
  • Antipov E.V. (Moscow MV Lomonosov State Univ, Lab Basic Res Aluminium Prod, Moscow, Russia)
  • Borzenko M.I. (Moscow MV Lomonosov State Univ, Lab Basic Res Aluminium Prod, Moscow, Russia)
  • Vassiliev S.Yu. (Moscow MV Lomonosov State Univ, Lab Basic Res Aluminium Prod, Moscow, Russia)
  • Velikodny Yu. A. (Moscow MV Lomonosov State Univ, Lab Basic Res Aluminium Prod, Moscow, Russia)
  • Denisov V.M. (Krasnoyarsk State Univ, Krasnoyarsk, Russia)
  • Ivanov V.V. (Engn & Technol Ctr Ltd, Krasnoyarsk, Russia)
  • Kazakov S.M. (Moscow MV Lomonosov State Univ, Lab Basic Res Aluminium Prod, Moscow, Russia)
  • Kuzminova Z.V (Moscow MV Lomonosov State Univ, Lab Basic Res Aluminium Prod, Moscow, Russia)
  • Filatov A.Yu (Moscow MV Lomonosov State Univ, Lab Basic Res Aluminium Prod, Moscow, Russia)
  • Tsirlina G.A. (Moscow MV Lomonosov State Univ, Lab Basic Res Aluminium Prod, Moscow, Russia)
  • Shtanov V.I (Moscow MV Lomonosov State Univ, Lab Basic Res Aluminium Prod, Moscow, Russia)

Вхождение в базы данных

Информация о публикациях загружается с сайта службы поддержки публикационной активности СФУ. Сообщите, если заметили неточности.

Вы можете отметить интересные фрагменты текста, которые будут доступны по уникальной ссылке в адресной строке браузера.