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

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dc.creatorRoviglione, Alicia
dc.creatorTesio, Alvaro Yamil
dc.creatorFungo, Fernando Gabriel
dc.creatorGregorutti, Ricardo Walter
dc.date2021-01
dc.date.accessioned2026-03-10T03:51:26Z
dc.date.available2026-03-10T03:51:26Z
dc.descriptionThis 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.
dc.descriptionFil: Roviglione, Alicia. Universidad de Buenos Aires. Facultad de Ingeniería; Argentina
dc.descriptionFil: 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
dc.descriptionFil: 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
dc.descriptionFil: Gregorutti, Ricardo Walter. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; Argentina
dc.formatapplication/pdf
dc.formatapplication/pdf
dc.identifierhttp://hdl.handle.net/11336/172336
dc.identifierRoviglione, 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
dc.identifier2075-163X
dc.identifierCONICET Digital
dc.identifierCONICET
dc.identifier.urihttps://ri.unju.edu.ar/handle/123456789/612
dc.languageeng
dc.publisherMDPI AG
dc.relationinfo:eu-repo/semantics/altIdentifier/url/https://www.mdpi.com/2075-163X/11/2/109
dc.relationinfo:eu-repo/semantics/altIdentifier/doi/10.3390/min11020109
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rightshttps://creativecommons.org/licenses/by/2.5/ar/
dc.subjectGRAPHITE FOLIATED DENDRITE
dc.subjectGRAPHITE GROWTH
dc.subjectHIERARCHICAL POROUS STRUCTURE
dc.subjectLI-O2 BATTERY CATHODE
dc.subjectPOROUS GRAPHITE
dc.subjectRUTHENIUM COMPLEX
dc.subjecthttps://purl.org/becyt/ford/1.4
dc.subjecthttps://purl.org/becyt/ford/1
dc.titleGraphite dendrites in cast iron and their fundamental role in the control of morphology to obtain aero-eutectic graphite
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:ar-repo/semantics/artículo
dc.typeinfo:eu-repo/semantics/publishedVersion
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