Abstract
Wüstite, Fe1-xO, is the principal oxide scale formed on iron above 843 K. Wüstite exhibits a broad range of non-stoichiometry (0.05 < x < 0.15), and even in equilibrium with iron maintains a minimum 5% iron deficiency. Its large departures from stoichiometry are accommodated by octahedral iron vacancies which associate into tetrahedral complexes about ferric ion interstitials. Despite a great many studies, further details of the defect structure have been slow in coming. We report here additional defect microstructure information for wüstite in equilibrium conditions and after annealing below the 843 K eutectoid, as revealed by electron diffraction, high-resolution dark-field and lattice-imaging techniques.Single crystals, prepared by a floating-zone method, were equilibrated within the wüstite phase field in CO/CO2 atmospheres providing controlled oxygen fugacity. Samples were oil-quenched so that they reached room temperature within a few seconds and are therefore expected to have retained the initial equilibrium structure.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Proceedings, annual meeting, Electron Microscopy Society of America
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
