Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
MM: Fachverband Metall- und Materialphysik
MM 9: Poster
MM 9.7: Poster
Montag, 17. März 2025, 18:30–20:30, P1
Raman spectroscopic studies on NiFe2O4-NiO-Ni composites as inert anode materials for aluminium molten salt electrolysis — •Felix Drechsler1, Ulziikhuu Otgonbayar2, Mahnaz Mehdizadehlima3, Cameliu Himcinschi1, David Rafaja3, and Jens Kortus1 — 1TU Bergakademie Freiberg, Institute of Theoretical Physics, D-09599 Freiberg, Germany — 2TU Bergakademie Freiberg, Institute of Nonferrous Metallurgy and Purest Materials, D-09599 Freiberg, Germany — 3TU Bergakademie Freiberg, Institute of Materials Science, D-09599 Freiberg, Germany
The use of inert anodes in aluminium molten salt electrolysis offers positive environmental effects compared to the commercially used graphite anode, especially by avoiding CO, CO2, and perfluorocarbon (PFC) emissions. Cermet anodes consisting of NiFe2O4, NiO, and Ni were manufactured by powder metallurgy and sintered using the Spark Plasma Sintering (SPS) technique. This anode material was investigated by micro-Raman spectroscopy to identify phases formed during the sintering process, such as nickel ferrite spinels. Temperature-dependent Raman measurements were performed to examine the micro- structure behaviour of the anode material at elevated temperatures.
Keywords: Raman spectroscopy; Metalloceramic composite materials; Phase identification; Spark Plasma Sintering; Spinels