Anzeige
Erschienen in:
2016 | OriginalPaper | Buchkapitel
Wetting Characteristics of Cryolite-Based Melts on Spinels Substrate
verfasst von : Reiza Z. Mukhlis, Muhammad Akbar Rhamdhani, Geoffrey Brooks, Kathie McGregor
Erschienen in: Light Metals 2014
Verlag: Springer International Publishing
Aktivieren Sie unsere intelligente Suche, um passende Fachinhalte oder Patente zu finden.
Wählen Sie Textabschnitte aus um mit Künstlicher Intelligenz passenden Patente zu finden. powered by
Markieren Sie Textabschnitte, um KI-gestützt weitere passende Inhalte zu finden. powered by
Spinels have recently been proposed as ledge free sidewall material for aluminium smelter, mainly due to its low solubility in cryolite. A ledge-free sidewall will have a direct contact with electrolyte and therefore its wetting properties become important as it determine the penetration of the electrolyte into the sidewall which in turn may affect its corrosion level. In the present study, the wetting properties of cryolite based melts on various spinels substrates have been studied by sessile drop approach. The apparent contact angle of the melts on NiFe2O4 and MgAl2O4 substrates under argon atmosphere at 1030 °C was measured. It was found that spinels were wetted by the melts with apparent contact angles ranging from 9° to 19°. It was also observed that the capillary effect play a significant role in the infiltration of the melts into the substrates. The average infiltration rate was found to be 8.5 mm3/s.