DTA/TGA/DSC and densification data for iron phosphate glasses having natural UO2.67 or surrogate Bi2O3 added

Autores
Arboleda Zuluaga, Paula Andrea; Rincón, Jesús Ma.; Gonzalez Oliver, Carlos Julian R.
Año de publicación
2022
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A new set of iron-uranium phosphate glasses containing (1–20) UO2.67. (10–20) Fe2O3. (55–68) P2O5 (mass/%) were melted adequately. They were tested for glassy matrices to immobilize hazardous wastes such as radioactive ones. Likewise, new compositions had uranium oxide replaced with Bi2O3. Differential Thermal Analysis (DTA), Thermogravimetric Analysis (TGA), Differential Scanning Calorimetry (DSC), and dilatometry measurements allowed us to study the thermal properties. TGA runs on phosphate glasses containing Fe and U oxides indicated that on heating the glasses, up to TS (dilatometric softening point), the Fe2+ ions oxidized irreversibly to Fe3+ ions which can increase the thermal stability of the glasses by delaying (or even avoiding) crystallization. The densification behavior, applied to pressed powder pellets of ground glasses, from controlled heating rate (CHR) runs (Δl/lo versus T/K), shows relative sample length change versus temperature during heating, provided further thermal data like densification details as well as definition of ranges of creep stability. Various DTA, DSC methods allowed estimating the activation energy for crystallization of these kind of glasses. In addition, separate crystallization treatments for a particular composition provided samples suitable to study the shape and content of crystals with the Scanning Electron Microscope (SEM)/Energy-Dispersive X-ray Spectroscopy (EDS) technique. Thus, a new family of iron-phosphate glasses having Na2O, Al2O3 added (RR6—RR62—RR63) is presented and discussed here and compared to various glasses (like PFeOx and PFeUOx) previously developed at the Bariloche Atomic Center, Argentina (CAB) for radioactive waste immobilization. Activation energies depicted roughly similar values for viscous flow densification of glasses melted with controlled amounts of UO2 for the earlier compositions as well as for the new formulations.
Fil: Arboleda Zuluaga, Paula Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina
Fil: Rincón, Jesús Ma.. No especifíca;
Fil: Gonzalez Oliver, Carlos Julian R.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina
Materia
BISMUTH OXIDE
DENSIFICATION
IRON PHOSPHATE GLASSES
NUCLEAR WASTES
THERMAL METHODS
URANIUM OXIDE
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/215140
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/215140
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling DTA/TGA/DSC and densification data for iron phosphate glasses having natural UO2.67 or surrogate Bi2O3 addedArboleda Zuluaga, Paula AndreaRincón, Jesús Ma.Gonzalez Oliver, Carlos Julian R.BISMUTH OXIDEDENSIFICATIONIRON PHOSPHATE GLASSESNUCLEAR WASTESTHERMAL METHODSURANIUM OXIDEhttps://purl.org/becyt/ford/2.5https://purl.org/becyt/ford/2A new set of iron-uranium phosphate glasses containing (1–20) UO2.67. (10–20) Fe2O3. (55–68) P2O5 (mass/%) were melted adequately. They were tested for glassy matrices to immobilize hazardous wastes such as radioactive ones. Likewise, new compositions had uranium oxide replaced with Bi2O3. Differential Thermal Analysis (DTA), Thermogravimetric Analysis (TGA), Differential Scanning Calorimetry (DSC), and dilatometry measurements allowed us to study the thermal properties. TGA runs on phosphate glasses containing Fe and U oxides indicated that on heating the glasses, up to TS (dilatometric softening point), the Fe2+ ions oxidized irreversibly to Fe3+ ions which can increase the thermal stability of the glasses by delaying (or even avoiding) crystallization. The densification behavior, applied to pressed powder pellets of ground glasses, from controlled heating rate (CHR) runs (Δl/lo versus T/K), shows relative sample length change versus temperature during heating, provided further thermal data like densification details as well as definition of ranges of creep stability. Various DTA, DSC methods allowed estimating the activation energy for crystallization of these kind of glasses. In addition, separate crystallization treatments for a particular composition provided samples suitable to study the shape and content of crystals with the Scanning Electron Microscope (SEM)/Energy-Dispersive X-ray Spectroscopy (EDS) technique. Thus, a new family of iron-phosphate glasses having Na2O, Al2O3 added (RR6—RR62—RR63) is presented and discussed here and compared to various glasses (like PFeOx and PFeUOx) previously developed at the Bariloche Atomic Center, Argentina (CAB) for radioactive waste immobilization. Activation energies depicted roughly similar values for viscous flow densification of glasses melted with controlled amounts of UO2 for the earlier compositions as well as for the new formulations.Fil: Arboleda Zuluaga, Paula Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; ArgentinaFil: Rincón, Jesús Ma.. No especifíca;Fil: Gonzalez Oliver, Carlos Julian R.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; ArgentinaSpringer2022-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/215140Arboleda Zuluaga, Paula Andrea; Rincón, Jesús Ma.; Gonzalez Oliver, Carlos Julian R.; DTA/TGA/DSC and densification data for iron phosphate glasses having natural UO2.67 or surrogate Bi2O3 added; Springer; Journal of Thermal Analysis and Calorimetry; 147; 21; 4-2022; 11715-117281388-6150CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1007/s10973-022-11374-9info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T12:02:06Zoai:ri.conicet.gov.ar:11336/215140instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 12:02:06.331CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv DTA/TGA/DSC and densification data for iron phosphate glasses having natural UO2.67 or surrogate Bi2O3 added
title DTA/TGA/DSC and densification data for iron phosphate glasses having natural UO2.67 or surrogate Bi2O3 added
spellingShingle DTA/TGA/DSC and densification data for iron phosphate glasses having natural UO2.67 or surrogate Bi2O3 added
Arboleda Zuluaga, Paula Andrea
BISMUTH OXIDE
DENSIFICATION
IRON PHOSPHATE GLASSES
NUCLEAR WASTES
THERMAL METHODS
URANIUM OXIDE
title_short DTA/TGA/DSC and densification data for iron phosphate glasses having natural UO2.67 or surrogate Bi2O3 added
title_full DTA/TGA/DSC and densification data for iron phosphate glasses having natural UO2.67 or surrogate Bi2O3 added
title_fullStr DTA/TGA/DSC and densification data for iron phosphate glasses having natural UO2.67 or surrogate Bi2O3 added
title_full_unstemmed DTA/TGA/DSC and densification data for iron phosphate glasses having natural UO2.67 or surrogate Bi2O3 added
title_sort DTA/TGA/DSC and densification data for iron phosphate glasses having natural UO2.67 or surrogate Bi2O3 added
dc.creator.none.fl_str_mv Arboleda Zuluaga, Paula Andrea
Rincón, Jesús Ma.
Gonzalez Oliver, Carlos Julian R.
author Arboleda Zuluaga, Paula Andrea
author_facet Arboleda Zuluaga, Paula Andrea
Rincón, Jesús Ma.
Gonzalez Oliver, Carlos Julian R.
author_role author
author2 Rincón, Jesús Ma.
Gonzalez Oliver, Carlos Julian R.
author2_role author
author
dc.subject.none.fl_str_mv BISMUTH OXIDE
DENSIFICATION
IRON PHOSPHATE GLASSES
NUCLEAR WASTES
THERMAL METHODS
URANIUM OXIDE
topic BISMUTH OXIDE
DENSIFICATION
IRON PHOSPHATE GLASSES
NUCLEAR WASTES
THERMAL METHODS
URANIUM OXIDE
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.5
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv A new set of iron-uranium phosphate glasses containing (1–20) UO2.67. (10–20) Fe2O3. (55–68) P2O5 (mass/%) were melted adequately. They were tested for glassy matrices to immobilize hazardous wastes such as radioactive ones. Likewise, new compositions had uranium oxide replaced with Bi2O3. Differential Thermal Analysis (DTA), Thermogravimetric Analysis (TGA), Differential Scanning Calorimetry (DSC), and dilatometry measurements allowed us to study the thermal properties. TGA runs on phosphate glasses containing Fe and U oxides indicated that on heating the glasses, up to TS (dilatometric softening point), the Fe2+ ions oxidized irreversibly to Fe3+ ions which can increase the thermal stability of the glasses by delaying (or even avoiding) crystallization. The densification behavior, applied to pressed powder pellets of ground glasses, from controlled heating rate (CHR) runs (Δl/lo versus T/K), shows relative sample length change versus temperature during heating, provided further thermal data like densification details as well as definition of ranges of creep stability. Various DTA, DSC methods allowed estimating the activation energy for crystallization of these kind of glasses. In addition, separate crystallization treatments for a particular composition provided samples suitable to study the shape and content of crystals with the Scanning Electron Microscope (SEM)/Energy-Dispersive X-ray Spectroscopy (EDS) technique. Thus, a new family of iron-phosphate glasses having Na2O, Al2O3 added (RR6—RR62—RR63) is presented and discussed here and compared to various glasses (like PFeOx and PFeUOx) previously developed at the Bariloche Atomic Center, Argentina (CAB) for radioactive waste immobilization. Activation energies depicted roughly similar values for viscous flow densification of glasses melted with controlled amounts of UO2 for the earlier compositions as well as for the new formulations.
Fil: Arboleda Zuluaga, Paula Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina
Fil: Rincón, Jesús Ma.. No especifíca;
Fil: Gonzalez Oliver, Carlos Julian R.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina
description A new set of iron-uranium phosphate glasses containing (1–20) UO2.67. (10–20) Fe2O3. (55–68) P2O5 (mass/%) were melted adequately. They were tested for glassy matrices to immobilize hazardous wastes such as radioactive ones. Likewise, new compositions had uranium oxide replaced with Bi2O3. Differential Thermal Analysis (DTA), Thermogravimetric Analysis (TGA), Differential Scanning Calorimetry (DSC), and dilatometry measurements allowed us to study the thermal properties. TGA runs on phosphate glasses containing Fe and U oxides indicated that on heating the glasses, up to TS (dilatometric softening point), the Fe2+ ions oxidized irreversibly to Fe3+ ions which can increase the thermal stability of the glasses by delaying (or even avoiding) crystallization. The densification behavior, applied to pressed powder pellets of ground glasses, from controlled heating rate (CHR) runs (Δl/lo versus T/K), shows relative sample length change versus temperature during heating, provided further thermal data like densification details as well as definition of ranges of creep stability. Various DTA, DSC methods allowed estimating the activation energy for crystallization of these kind of glasses. In addition, separate crystallization treatments for a particular composition provided samples suitable to study the shape and content of crystals with the Scanning Electron Microscope (SEM)/Energy-Dispersive X-ray Spectroscopy (EDS) technique. Thus, a new family of iron-phosphate glasses having Na2O, Al2O3 added (RR6—RR62—RR63) is presented and discussed here and compared to various glasses (like PFeOx and PFeUOx) previously developed at the Bariloche Atomic Center, Argentina (CAB) for radioactive waste immobilization. Activation energies depicted roughly similar values for viscous flow densification of glasses melted with controlled amounts of UO2 for the earlier compositions as well as for the new formulations.
publishDate 2022
dc.date.none.fl_str_mv 2022-04
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
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://hdl.handle.net/11336/215140
Arboleda Zuluaga, Paula Andrea; Rincón, Jesús Ma.; Gonzalez Oliver, Carlos Julian R.; DTA/TGA/DSC and densification data for iron phosphate glasses having natural UO2.67 or surrogate Bi2O3 added; Springer; Journal of Thermal Analysis and Calorimetry; 147; 21; 4-2022; 11715-11728
1388-6150
CONICET Digital
CONICET
url http://hdl.handle.net/11336/215140
identifier_str_mv Arboleda Zuluaga, Paula Andrea; Rincón, Jesús Ma.; Gonzalez Oliver, Carlos Julian R.; DTA/TGA/DSC and densification data for iron phosphate glasses having natural UO2.67 or surrogate Bi2O3 added; Springer; Journal of Thermal Analysis and Calorimetry; 147; 21; 4-2022; 11715-11728
1388-6150
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1007/s10973-022-11374-9
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Springer
publisher.none.fl_str_mv Springer
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.982451

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