 |
A review about wüstite Fe 1-z O, pseudo-phases and defect clustering
Abstract : Thermodynamic properties and structural aspects of the non-stoichiometric wüstite Fe 1-z O, and its modifications-the so-called pseudo-phases-as functions of composition z and equilibrium temperature are reviewed from 1960 to present (159 references). The focus is first put on the complexity of the equilibrium phase diagram. The first order transition W <==> W' is specified on the boundary iron/ wüstite close to 1185 K. Transitions correlated to the modifications Wi at T(W) > 1185 K and W'j at 1185K < T(W') < T(W) (i and j =1,2,3) are reexamined. Structural determinations based on point defects and their clustering are recalled. A series of equilibria are developed, trying to justify the stabilization of the pseudo-phases, which can be interpreted in terms of transformation of defect clusters, or their mode of distribution (percolation, superstructure) including changes in electronic charge carriers.
Cited literature [43 references]
https://hal-univ-tln.archives-ouvertes.fr/hal-01659994
Contributor : Jean-Raymond GAVARRI Connect in order to contact the contributor
Submitted on : Tuesday, February 13, 2018 - 8:01:39 AM
Last modification on : Wednesday, November 3, 2021 - 9:42:53 AM
Contributor : Jean-Raymond GAVARRI Connect in order to contact the contributor
Submitted on : Tuesday, February 13, 2018 - 8:01:39 AM
Last modification on : Wednesday, November 3, 2021 - 9:42:53 AM
File
WUSTITE-HAL-CC-JRG-11-02-2018....
Files produced by the author(s)