Thermal Behavior of Iron Arsenides Under Non-Oxidizing Conditions.
Accepted version
Peer-reviewed
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Repository DOI
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Authors
Seitkan, Ainur
Lampronti, Giulio I
Widmer, Remo N
Casati, Nicola PM
Redfern, Simon AT
Abstract
Fe2As has been studied in situ by synchrotron powder X-ray diffraction (PXRD) over the range of temperatures 25-850 °C and under a neutral atmosphere to understand its thermal behavior, which is potentially important for gold extraction. For the first time, incongruent high-temperature reactions of Fe2As are observed as it breaks down and the existence of a previously undiscovered high-temperature FeAs phase with an NiAs-type structure has been determined experimentally. No evidence has been found for the existence of the high-temperature Fe3As2 phase. Hence, the previously published phase diagram for the Fe-As system has to be modified accordingly.
Description
Keywords
3402 Inorganic Chemistry, 34 Chemical Sciences
Journal Title
ACS Omega
Conference Name
Journal ISSN
2470-1343
2470-1343
2470-1343
Volume Title
5
Publisher
American Chemical Society (ACS)
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All rights reserved
Sponsorship
British Council (172724105)