ON THE SOLID-PHASE TRANSFORMATION GOETHITE-]HEMATITE

Authors
DIAMANDESCU L MIHAILATARABASANU D FEDER M
Citation
L. Diamandescu et al., ON THE SOLID-PHASE TRANSFORMATION GOETHITE-]HEMATITE, Materials letters, 17(5), 1993, pp. 309-311
Citations number
11
Categorie Soggetti
Material Science","Physics, Applied
Journal title
Materials letters → ACNP
ISSN journal
0167577X
Volume
17
Issue
5
Year of publication
1993
Pages
309 - 311
Database
ISI
SICI code
0167-577X(1993)17:5<309:OTSTG>2.0.ZU;2-7
Abstract
Mossbauer spectroscopy has been used to investigate the solid phase tr ansformation of goethite into hematite at 250-degrees-C. An Avrami-Ero feyev-type relation was found to describe the thermal conversion of al pha oxihydroxide to the alpha iron oxide. No intermediate phase was ob served in the analyzed samples. The reaction constant was determined. A possible nucleation mechanism is also discussed.