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Characterization of rutile passivation layers formed on Magnéli‐phase titanium oxide inert anodes
Author(s) -
Rowles Matthew Ryan,
Scarlett Nicola V. Y.,
Madsen Ian C.,
McGregor Katherine
Publication year - 2011
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s0021889811021315
Subject(s) - rutile , passivation , anode , materials science , electrolysis , inert , titanium , diffraction , characterization (materials science) , oxide , electrochemistry , phase (matter) , analytical chemistry (journal) , chemical engineering , layer (electronics) , electrode , metallurgy , chemistry , nanotechnology , optics , physics , organic chemistry , chromatography , engineering , electrolyte
An ex situ characterization study has been performed on rutile passivation layers on inert anodes used for molten salt electrochemical studies. Rutile layer thicknesses were estimated using a number of ex situ methods, including laboratory and synchrotron X‐ray diffraction and optical microscopy. The only phases in the anode detected by diffraction were the Magnéli phases (Ti n O 2 n −1 , n = 5–6) of the unreacted anode and rutile (TiO 2 ), which forms on electrolysis. These measurements validate a previously developed in situ energy‐dispersive X‐ray diffraction analysis technique [Scarlett, Madsen, Evans, Coelho, McGregor, Rowles, Lanyon & Urban (2009). J. Appl. Cryst. 42 , 502–512].