Graphite dendrites in cast iron and their fundamental role in the control of morphology to obtain aero-eutectic graphite

Autores
Roviglione, Alicia; Tesio, Alvaro Yamil; Fungo, Fernando Gabriel; Gregorutti, Ricardo Walter
Año de publicación
2021
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
This work analyzes the growth of graphite in the eutectic system of gray cast iron, focusing on laminar type A and undercooled type D morphology, and a modified morphology, such as vermicular or compact graphite. The objective of the study is to find an optimal graphite structure, from which a new class of lightweight materials results that has been called aero-eutectic graphite (AEG). The method to obtain AEG consists of dissolving the gray iron ferrous matrix by means of a chemical attack. From experiences of unidirectional solidification, it has been found that laminar graphite grows in a non-faceted way, coupled to austenite, while in vermicular the growth is through foliated dendrites. This characteristic allows vermicular graphite to have a higher specific intrinsic surface area. According to the Brunauer-Emmett-Teller (BET) analysis, the surface of the vermicular was 106.27 m2 g−1, while those corresponding to type A and D were 83.390 m2 g−1 and 89.670 m2 g−1, respectively. AEG with graphite type D was used as a cathode in Li-O2 batteries with satisfactory results, reaching more than 70 charge and discharge cycles, and 150 cycles at this time and still cycling, using Ru(bpy)3(ClO4)2 as redox mediator.
Fil: Roviglione, Alicia. Universidad de Buenos Aires. Facultad de Ingeniería; Argentina
Fil: Tesio, Alvaro Yamil. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigación y Desarrollo en Materiales Avanzados y Almacenamiento de Energía de Jujuy - Universidad Nacional de Jujuy. Centro de Investigación y Desarrollo en Materiales Avanzados y Almacenamiento de Energía de Jujuy - Gobierno de la Provincia de Jujuy. Centro de Investigación y Desarrollo en Materiales Avanzados y Almacenamiento de Energía de Jujuy; Argentina
Fil: Fungo, Fernando Gabriel. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Instituto de Investigaciones en Tecnologías Energéticas y Materiales Avanzados. - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Tecnologías Energéticas y Materiales Avanzados; Argentina
Fil: Gregorutti, Ricardo Walter. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; Argentina
Materia
GRAPHITE FOLIATED DENDRITE
GRAPHITE GROWTH
HIERARCHICAL POROUS STRUCTURE
LI-O2 BATTERY CATHODE
POROUS GRAPHITE
RUTHENIUM COMPLEX
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/172336
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/172336
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Graphite dendrites in cast iron and their fundamental role in the control of morphology to obtain aero-eutectic graphiteRoviglione, AliciaTesio, Alvaro YamilFungo, Fernando GabrielGregorutti, Ricardo WalterGRAPHITE FOLIATED DENDRITEGRAPHITE GROWTHHIERARCHICAL POROUS STRUCTURELI-O2 BATTERY CATHODEPOROUS GRAPHITERUTHENIUM COMPLEXhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1This work analyzes the growth of graphite in the eutectic system of gray cast iron, focusing on laminar type A and undercooled type D morphology, and a modified morphology, such as vermicular or compact graphite. The objective of the study is to find an optimal graphite structure, from which a new class of lightweight materials results that has been called aero-eutectic graphite (AEG). The method to obtain AEG consists of dissolving the gray iron ferrous matrix by means of a chemical attack. From experiences of unidirectional solidification, it has been found that laminar graphite grows in a non-faceted way, coupled to austenite, while in vermicular the growth is through foliated dendrites. This characteristic allows vermicular graphite to have a higher specific intrinsic surface area. According to the Brunauer-Emmett-Teller (BET) analysis, the surface of the vermicular was 106.27 m2 g−1, while those corresponding to type A and D were 83.390 m2 g−1 and 89.670 m2 g−1, respectively. AEG with graphite type D was used as a cathode in Li-O2 batteries with satisfactory results, reaching more than 70 charge and discharge cycles, and 150 cycles at this time and still cycling, using Ru(bpy)3(ClO4)2 as redox mediator.Fil: Roviglione, Alicia. Universidad de Buenos Aires. Facultad de Ingeniería; ArgentinaFil: Tesio, Alvaro Yamil. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigación y Desarrollo en Materiales Avanzados y Almacenamiento de Energía de Jujuy - Universidad Nacional de Jujuy. Centro de Investigación y Desarrollo en Materiales Avanzados y Almacenamiento de Energía de Jujuy - Gobierno de la Provincia de Jujuy. Centro de Investigación y Desarrollo en Materiales Avanzados y Almacenamiento de Energía de Jujuy; ArgentinaFil: Fungo, Fernando Gabriel. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Instituto de Investigaciones en Tecnologías Energéticas y Materiales Avanzados. - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Tecnologías Energéticas y Materiales Avanzados; ArgentinaFil: Gregorutti, Ricardo Walter. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; ArgentinaMDPI AG2021-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/172336Roviglione, Alicia; Tesio, Alvaro Yamil; Fungo, Fernando Gabriel; Gregorutti, Ricardo Walter; Graphite dendrites in cast iron and their fundamental role in the control of morphology to obtain aero-eutectic graphite; MDPI AG; Minerals; 11; 2; 1-2021; 1-182075-163XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.mdpi.com/2075-163X/11/2/109info:eu-repo/semantics/altIdentifier/doi/10.3390/min11020109info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:55:41Zoai:ri.conicet.gov.ar:11336/172336instacron: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:34982025-10-15 14:55:41.704CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Graphite dendrites in cast iron and their fundamental role in the control of morphology to obtain aero-eutectic graphite
title Graphite dendrites in cast iron and their fundamental role in the control of morphology to obtain aero-eutectic graphite
spellingShingle Graphite dendrites in cast iron and their fundamental role in the control of morphology to obtain aero-eutectic graphite
Roviglione, Alicia
GRAPHITE FOLIATED DENDRITE
GRAPHITE GROWTH
HIERARCHICAL POROUS STRUCTURE
LI-O2 BATTERY CATHODE
POROUS GRAPHITE
RUTHENIUM COMPLEX
title_short Graphite dendrites in cast iron and their fundamental role in the control of morphology to obtain aero-eutectic graphite
title_full Graphite dendrites in cast iron and their fundamental role in the control of morphology to obtain aero-eutectic graphite
title_fullStr Graphite dendrites in cast iron and their fundamental role in the control of morphology to obtain aero-eutectic graphite
title_full_unstemmed Graphite dendrites in cast iron and their fundamental role in the control of morphology to obtain aero-eutectic graphite
title_sort Graphite dendrites in cast iron and their fundamental role in the control of morphology to obtain aero-eutectic graphite
dc.creator.none.fl_str_mv Roviglione, Alicia
Tesio, Alvaro Yamil
Fungo, Fernando Gabriel
Gregorutti, Ricardo Walter
author Roviglione, Alicia
author_facet Roviglione, Alicia
Tesio, Alvaro Yamil
Fungo, Fernando Gabriel
Gregorutti, Ricardo Walter
author_role author
author2 Tesio, Alvaro Yamil
Fungo, Fernando Gabriel
Gregorutti, Ricardo Walter
author2_role author
author
author
dc.subject.none.fl_str_mv GRAPHITE FOLIATED DENDRITE
GRAPHITE GROWTH
HIERARCHICAL POROUS STRUCTURE
LI-O2 BATTERY CATHODE
POROUS GRAPHITE
RUTHENIUM COMPLEX
topic GRAPHITE FOLIATED DENDRITE
GRAPHITE GROWTH
HIERARCHICAL POROUS STRUCTURE
LI-O2 BATTERY CATHODE
POROUS GRAPHITE
RUTHENIUM COMPLEX
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv This work analyzes the growth of graphite in the eutectic system of gray cast iron, focusing on laminar type A and undercooled type D morphology, and a modified morphology, such as vermicular or compact graphite. The objective of the study is to find an optimal graphite structure, from which a new class of lightweight materials results that has been called aero-eutectic graphite (AEG). The method to obtain AEG consists of dissolving the gray iron ferrous matrix by means of a chemical attack. From experiences of unidirectional solidification, it has been found that laminar graphite grows in a non-faceted way, coupled to austenite, while in vermicular the growth is through foliated dendrites. This characteristic allows vermicular graphite to have a higher specific intrinsic surface area. According to the Brunauer-Emmett-Teller (BET) analysis, the surface of the vermicular was 106.27 m2 g−1, while those corresponding to type A and D were 83.390 m2 g−1 and 89.670 m2 g−1, respectively. AEG with graphite type D was used as a cathode in Li-O2 batteries with satisfactory results, reaching more than 70 charge and discharge cycles, and 150 cycles at this time and still cycling, using Ru(bpy)3(ClO4)2 as redox mediator.
Fil: Roviglione, Alicia. Universidad de Buenos Aires. Facultad de Ingeniería; Argentina
Fil: Tesio, Alvaro Yamil. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigación y Desarrollo en Materiales Avanzados y Almacenamiento de Energía de Jujuy - Universidad Nacional de Jujuy. Centro de Investigación y Desarrollo en Materiales Avanzados y Almacenamiento de Energía de Jujuy - Gobierno de la Provincia de Jujuy. Centro de Investigación y Desarrollo en Materiales Avanzados y Almacenamiento de Energía de Jujuy; Argentina
Fil: Fungo, Fernando Gabriel. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Instituto de Investigaciones en Tecnologías Energéticas y Materiales Avanzados. - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Tecnologías Energéticas y Materiales Avanzados; Argentina
Fil: Gregorutti, Ricardo Walter. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; Argentina
description This work analyzes the growth of graphite in the eutectic system of gray cast iron, focusing on laminar type A and undercooled type D morphology, and a modified morphology, such as vermicular or compact graphite. The objective of the study is to find an optimal graphite structure, from which a new class of lightweight materials results that has been called aero-eutectic graphite (AEG). The method to obtain AEG consists of dissolving the gray iron ferrous matrix by means of a chemical attack. From experiences of unidirectional solidification, it has been found that laminar graphite grows in a non-faceted way, coupled to austenite, while in vermicular the growth is through foliated dendrites. This characteristic allows vermicular graphite to have a higher specific intrinsic surface area. According to the Brunauer-Emmett-Teller (BET) analysis, the surface of the vermicular was 106.27 m2 g−1, while those corresponding to type A and D were 83.390 m2 g−1 and 89.670 m2 g−1, respectively. AEG with graphite type D was used as a cathode in Li-O2 batteries with satisfactory results, reaching more than 70 charge and discharge cycles, and 150 cycles at this time and still cycling, using Ru(bpy)3(ClO4)2 as redox mediator.
publishDate 2021
dc.date.none.fl_str_mv 2021-01
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/11336/172336
Roviglione, Alicia; Tesio, Alvaro Yamil; Fungo, Fernando Gabriel; Gregorutti, Ricardo Walter; Graphite dendrites in cast iron and their fundamental role in the control of morphology to obtain aero-eutectic graphite; MDPI AG; Minerals; 11; 2; 1-2021; 1-18
2075-163X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/172336
identifier_str_mv Roviglione, Alicia; Tesio, Alvaro Yamil; Fungo, Fernando Gabriel; Gregorutti, Ricardo Walter; Graphite dendrites in cast iron and their fundamental role in the control of morphology to obtain aero-eutectic graphite; MDPI AG; Minerals; 11; 2; 1-2021; 1-18
2075-163X
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.mdpi.com/2075-163X/11/2/109
info:eu-repo/semantics/altIdentifier/doi/10.3390/min11020109
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv MDPI AG
publisher.none.fl_str_mv MDPI AG
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 13.216834

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