Mössbauer study of internally oxidized silver-tin alloys

A Mössbauer study of internally formed oxides as a function of oxidation temperatures between 200 ℃ and 850 ℃ was performed on previously annealed 1 at%AgSn alloys. The oxide formed at high temperatures (t ⩾ 500 ℃) consists in agglomerates of tin dioxideδCaSnO3/RT = 0.00 ± 0.01 mm/s, δQ=0.50 ± 0.03...

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Detalles Bibliográficos
Autores principales: Sánchez, Francisco Homero, Mercader, Roberto Carlos, Pasquevich, Alberto Felipe, Bibiloni, Aníbal Guillermo, López García, Alberto Raúl
Formato: Articulo
Lenguaje:Inglés
Publicado: 1984
Materias:
Química
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/138548
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-138548
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Química
spellingShingle Química
Sánchez, Francisco Homero
Mercader, Roberto Carlos
Pasquevich, Alberto Felipe
Bibiloni, Aníbal Guillermo
López García, Alberto Raúl
Mössbauer study of internally oxidized silver-tin alloys
topic_facet Química
description A Mössbauer study of internally formed oxides as a function of oxidation temperatures between 200 ℃ and 850 ℃ was performed on previously annealed 1 at%AgSn alloys. The oxide formed at high temperatures (t ⩾ 500 ℃) consists in agglomerates of tin dioxideδCaSnO3/RT = 0.00 ± 0.01 mm/s, δQ=0.50 ± 0.03 mm/s). The low temperature oxide (t ⩽ 300 ℃) is characterized byδCaSnO3/RT = 0.29 ± 0.02 mm/s and δQ=0.32 ± 0.03 mm/s, and could be in the form of one-Sn-atom oxide complexes in the silver matrix. From the measured isomer shifts in the range 400 ⩽t ⩽ 550 ℃, the maximum contribution of the silver matrix to the effective number of electrons per Sn atom in oxide agglomerates has been estimated ℴ have a value of about 0.06. The effect of the cold work on the hyperfine parameters of the oxidized tin has also been investigated. ‘As rolled ’ samples were found to attain the same values of isomer shifts and quadrupole splittings as annealed specimens, but at lower temperatures.
format Articulo
Articulo
author Sánchez, Francisco Homero
Mercader, Roberto Carlos
Pasquevich, Alberto Felipe
Bibiloni, Aníbal Guillermo
López García, Alberto Raúl
author_facet Sánchez, Francisco Homero
Mercader, Roberto Carlos
Pasquevich, Alberto Felipe
Bibiloni, Aníbal Guillermo
López García, Alberto Raúl
author_sort Sánchez, Francisco Homero
title Mössbauer study of internally oxidized silver-tin alloys
title_short Mössbauer study of internally oxidized silver-tin alloys
title_full Mössbauer study of internally oxidized silver-tin alloys
title_fullStr Mössbauer study of internally oxidized silver-tin alloys
title_full_unstemmed Mössbauer study of internally oxidized silver-tin alloys
title_sort mössbauer study of internally oxidized silver-tin alloys
publishDate 1984
url http://sedici.unlp.edu.ar/handle/10915/138548
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AT pasquevichalbertofelipe mossbauerstudyofinternallyoxidizedsilvertinalloys
AT bibilonianibalguillermo mossbauerstudyofinternallyoxidizedsilvertinalloys
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bdutipo_str Repositorios
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