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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/215140
Ver los metadatos del registro completo
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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 Técnicas2025-09-29T10:29:38Zoai: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:34982025-09-29 10:29:39.102CONICET 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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1844614303321161728 |
score |
13.070432 |