Artículo
New kinetic insight into the spontaneous oxidation process of lithium in air by EPMA
Otero, Manuel
; Lener, German
; Trincavelli, Jorge Carlos
; Barraco Diaz, Daniel Eugenio
; Nazzarro, Marcelo Sandro
; Furlong, Octavio Javier
; Leiva, Ezequiel Pedro M.
Fecha de publicación:
10/2016
Editorial:
Elsevier Science
Revista:
Applied Surface Science
ISSN:
0169-4332
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The exposure of metallic lithium to ambient air produces a fast corrosion reaction of the surface that continues to the bulk of the material. This spontaneous process was explored by means of X-ray Photoelectron Spectroscopy (XPS) and Electron Probe Micro-Analysis (EPMA). The combination of these techniques and Monte Carlo simulations allowed observing the formation of a film of lithium hydroxide (LiOH) and studying the growth within the material during the first 300 s. The corrosion is mainly due to the reaction of lithium with water and the diffusion of water through the growing LiOH film is the rate determining step. On the basis of a kinetic analysis we studied the mechanism of reaction and inferred a diffusion coefficient of D = (5.1 ± 0.4) × 10-12 cm2/s in agreement with results from the literature obtained using different techniques.
Palabras clave:
Electron Probe Micro-Analysis
,
Lithium Corrosion
,
Oxide Growth Kinetics
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Colecciones
Articulos(IFEG)
Articulos de INST.DE FISICA ENRIQUE GAVIOLA
Articulos de INST.DE FISICA ENRIQUE GAVIOLA
Articulos(INFAP)
Articulos de INST. DE FISICA APLICADA "DR. JORGE ANDRES ZGRABLICH"
Articulos de INST. DE FISICA APLICADA "DR. JORGE ANDRES ZGRABLICH"
Articulos(INFIQC)
Articulos de INST.DE INVESTIGACIONES EN FISICO- QUIMICA DE CORDOBA
Articulos de INST.DE INVESTIGACIONES EN FISICO- QUIMICA DE CORDOBA
Citación
Otero, Manuel; Lener, German; Trincavelli, Jorge Carlos; Barraco Diaz, Daniel Eugenio; Nazzarro, Marcelo Sandro; et al.; New kinetic insight into the spontaneous oxidation process of lithium in air by EPMA; Elsevier Science; Applied Surface Science; 383; 10-2016; 64-70
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