Photoacoustic characterization of phase transitions in amorphous metal alloys
- Autores
- Orzi, Daniel Jesús Omar; Bilmes, Gabriel Mario; Tocho, Jorge Omar; Mingolo, Nélida; Martínez, Oscar Eduardo
- Año de publicación
- 1998
- Idioma
- español castellano
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- In this work a pulsed laser photoacoustic technique is employed in amorphous alloys for the characterization of crystallization temperatures and the determination of the activation energies for the transitions. It is shown that the changes produced in the photoacoustic signal generated by low energy laser pulses (< 200 μJ), is a sensitive probe for detecting the crystallization of a metallic amorphous sample. A piezoelectric transducer attached to the sample by means of a glass substrate was used for the acoustic detection. The developed technique has the advantages of requiring a minimum amount of sample, with no special sample preparation or conditioning. In order to demonstrate the validity of the technique, it was applied to the study of the crystallization processes of the amorphous Mg-Zn alloy, comparing the result with respect to resistivity measurements.
Facultad de Ciencias Exactas - Materia
-
Ciencias Exactas
material amorfo
Rayos Láser
resistivity measurements
laser photoacoustic technique
amorphous alloys
crystallization - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by/4.0/
- Repositorio
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/44591
Ver los metadatos del registro completo
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Photoacoustic characterization of phase transitions in amorphous metal alloysOrzi, Daniel Jesús OmarBilmes, Gabriel MarioTocho, Jorge OmarMingolo, NélidaMartínez, Oscar EduardoCiencias Exactasmaterial amorfoRayos Láserresistivity measurementslaser photoacoustic techniqueamorphous alloyscrystallizationIn this work a pulsed laser photoacoustic technique is employed in amorphous alloys for the characterization of crystallization temperatures and the determination of the activation energies for the transitions. It is shown that the changes produced in the photoacoustic signal generated by low energy laser pulses (< 200 μJ), is a sensitive probe for detecting the crystallization of a metallic amorphous sample. A piezoelectric transducer attached to the sample by means of a glass substrate was used for the acoustic detection. The developed technique has the advantages of requiring a minimum amount of sample, with no special sample preparation or conditioning. In order to demonstrate the validity of the technique, it was applied to the study of the crystallization processes of the amorphous Mg-Zn alloy, comparing the result with respect to resistivity measurements.Facultad de Ciencias Exactas1998info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf245-249http://sedici.unlp.edu.ar/handle/10915/44591spainfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:02:03Zoai:sedici.unlp.edu.ar:10915/44591Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:02:03.281SEDICI (UNLP) - Universidad Nacional de La Platafalse |
dc.title.none.fl_str_mv |
Photoacoustic characterization of phase transitions in amorphous metal alloys |
title |
Photoacoustic characterization of phase transitions in amorphous metal alloys |
spellingShingle |
Photoacoustic characterization of phase transitions in amorphous metal alloys Orzi, Daniel Jesús Omar Ciencias Exactas material amorfo Rayos Láser resistivity measurements laser photoacoustic technique amorphous alloys crystallization |
title_short |
Photoacoustic characterization of phase transitions in amorphous metal alloys |
title_full |
Photoacoustic characterization of phase transitions in amorphous metal alloys |
title_fullStr |
Photoacoustic characterization of phase transitions in amorphous metal alloys |
title_full_unstemmed |
Photoacoustic characterization of phase transitions in amorphous metal alloys |
title_sort |
Photoacoustic characterization of phase transitions in amorphous metal alloys |
dc.creator.none.fl_str_mv |
Orzi, Daniel Jesús Omar Bilmes, Gabriel Mario Tocho, Jorge Omar Mingolo, Nélida Martínez, Oscar Eduardo |
author |
Orzi, Daniel Jesús Omar |
author_facet |
Orzi, Daniel Jesús Omar Bilmes, Gabriel Mario Tocho, Jorge Omar Mingolo, Nélida Martínez, Oscar Eduardo |
author_role |
author |
author2 |
Bilmes, Gabriel Mario Tocho, Jorge Omar Mingolo, Nélida Martínez, Oscar Eduardo |
author2_role |
author author author author |
dc.subject.none.fl_str_mv |
Ciencias Exactas material amorfo Rayos Láser resistivity measurements laser photoacoustic technique amorphous alloys crystallization |
topic |
Ciencias Exactas material amorfo Rayos Láser resistivity measurements laser photoacoustic technique amorphous alloys crystallization |
dc.description.none.fl_txt_mv |
In this work a pulsed laser photoacoustic technique is employed in amorphous alloys for the characterization of crystallization temperatures and the determination of the activation energies for the transitions. It is shown that the changes produced in the photoacoustic signal generated by low energy laser pulses (< 200 μJ), is a sensitive probe for detecting the crystallization of a metallic amorphous sample. A piezoelectric transducer attached to the sample by means of a glass substrate was used for the acoustic detection. The developed technique has the advantages of requiring a minimum amount of sample, with no special sample preparation or conditioning. In order to demonstrate the validity of the technique, it was applied to the study of the crystallization processes of the amorphous Mg-Zn alloy, comparing the result with respect to resistivity measurements. Facultad de Ciencias Exactas |
description |
In this work a pulsed laser photoacoustic technique is employed in amorphous alloys for the characterization of crystallization temperatures and the determination of the activation energies for the transitions. It is shown that the changes produced in the photoacoustic signal generated by low energy laser pulses (< 200 μJ), is a sensitive probe for detecting the crystallization of a metallic amorphous sample. A piezoelectric transducer attached to the sample by means of a glass substrate was used for the acoustic detection. The developed technique has the advantages of requiring a minimum amount of sample, with no special sample preparation or conditioning. In order to demonstrate the validity of the technique, it was applied to the study of the crystallization processes of the amorphous Mg-Zn alloy, comparing the result with respect to resistivity measurements. |
publishDate |
1998 |
dc.date.none.fl_str_mv |
1998 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://sedici.unlp.edu.ar/handle/10915/44591 |
url |
http://sedici.unlp.edu.ar/handle/10915/44591 |
dc.language.none.fl_str_mv |
spa |
language |
spa |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0) |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0) |
dc.format.none.fl_str_mv |
application/pdf 245-249 |
dc.source.none.fl_str_mv |
reponame:SEDICI (UNLP) instname:Universidad Nacional de La Plata instacron:UNLP |
reponame_str |
SEDICI (UNLP) |
collection |
SEDICI (UNLP) |
instname_str |
Universidad Nacional de La Plata |
instacron_str |
UNLP |
institution |
UNLP |
repository.name.fl_str_mv |
SEDICI (UNLP) - Universidad Nacional de La Plata |
repository.mail.fl_str_mv |
alira@sedici.unlp.edu.ar |
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score |
13.070432 |