Dynamics of Oxidation of a Fe2+-Bearing Aluminosilicate (Basaltic) Melt

Autor:	J. K. Richard Weber, John B. Fanselow, David B. Poker, Dennis R. Merkley, Reid F. Cooper
Rok vydání:	1996
Předmět:	Multidisciplinary Chemistry Diffusion Spinel Nucleation Mineralogy chemistry.chemical_element engineering.material Microstructure Oxygen chemistry.chemical_compound Chemical engineering Aluminosilicate engineering Internal oxidation Magnetite
Zdroj:	Science (New York, N.Y.). 274(5290)
ISSN:	1095-9203
Popis:	Rutherford backscattering spectroscopy (RBS) and microscopy demonstrate that the approximately 1400deg;C oxidation of levitated droplets of a natural Fe2+-bearing aluminosilicate (basalt) melt occurs by chemical diffusion of Fe2+ and Ca2+ to the free surface of the droplet; internal oxidation of the melt results from the required counterflux of electron holes. Diffusion of an oxygen species is not required. Oxidation causes the droplets to go subsolidus; magnetite (Fe3O4) forms at the oxidation-solidification front with a morphology suggestive of a Liesegang-band nucleation process.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f286b1a36bfe70ae51dde161dcbfc107 https://pubmed.ncbi.nlm.nih.gov/8895462 Zobrazit plný text záznamu Plný text ve formátu PDF