Green mechanical evaluation of mullite porous compacts prepared by pre-gelling starch consolidation
- Autores
- Talou, Mariano Hernán; Tomba Martinez, Analia Gladys; Camerucci, Maria Andrea
- Año de publicación
- 2012
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The mechanical behavior of green porous mullite disks (volume porosity > 55%) prepared by the thermogelation of mullite aqueous suspensions with different native starches (i.e. potato, cassava and corn starches) was studied. One set of disks was prepared by thermal consolidation (70–80 °C, 2 h) of aqueous mullite suspensions (40 vol.%) containing 10 vol.% of starch pre-gelled at 55–60 °C and dried at 40 °C for 24 h. Another set of specimens was prepared by additional firing at 650 °C for 2 h to burn-out the starches. Both sets of disks were characterized by density measurements (Archimedes method), apparent porosity calculus, and microstructural analysis by SEM. Mechanical parameters such as fracture strength, apparent elastic modulus, fracture and final deformations and yield stress were determined from apparent stress–strain relations derived from load-displacement curves obtained by diametral compression testing. Moreover, typical crack patterns were evaluated and fractographic analysis was carried out by SEM. Mechanical results were analyzed in relation to the behavior of the starches in aqueous suspension and the properties of the developed gels, together with the respective microstructures before and after the burn-out process. Mechanical data were also considered taking into account the possibility of machining the green compacts formed by pre-gelling starch consolidation.
Fil: Talou, Mariano Hernán. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina
Fil: Tomba Martinez, Analia Gladys. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina
Fil: Camerucci, Maria Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina - Materia
-
Starch Direct Consolidation
Mullite
Green Porous Microstructures
Mechanical Properties
Green Machining - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/43809
Ver los metadatos del registro completo
id |
CONICETDig_b07772468f1647f43e545bf7ce986a0c |
---|---|
oai_identifier_str |
oai:ri.conicet.gov.ar:11336/43809 |
network_acronym_str |
CONICETDig |
repository_id_str |
3498 |
network_name_str |
CONICET Digital (CONICET) |
spelling |
Green mechanical evaluation of mullite porous compacts prepared by pre-gelling starch consolidationTalou, Mariano HernánTomba Martinez, Analia GladysCamerucci, Maria AndreaStarch Direct ConsolidationMulliteGreen Porous MicrostructuresMechanical PropertiesGreen Machininghttps://purl.org/becyt/ford/2.5https://purl.org/becyt/ford/2https://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1The mechanical behavior of green porous mullite disks (volume porosity > 55%) prepared by the thermogelation of mullite aqueous suspensions with different native starches (i.e. potato, cassava and corn starches) was studied. One set of disks was prepared by thermal consolidation (70–80 °C, 2 h) of aqueous mullite suspensions (40 vol.%) containing 10 vol.% of starch pre-gelled at 55–60 °C and dried at 40 °C for 24 h. Another set of specimens was prepared by additional firing at 650 °C for 2 h to burn-out the starches. Both sets of disks were characterized by density measurements (Archimedes method), apparent porosity calculus, and microstructural analysis by SEM. Mechanical parameters such as fracture strength, apparent elastic modulus, fracture and final deformations and yield stress were determined from apparent stress–strain relations derived from load-displacement curves obtained by diametral compression testing. Moreover, typical crack patterns were evaluated and fractographic analysis was carried out by SEM. Mechanical results were analyzed in relation to the behavior of the starches in aqueous suspension and the properties of the developed gels, together with the respective microstructures before and after the burn-out process. Mechanical data were also considered taking into account the possibility of machining the green compacts formed by pre-gelling starch consolidation.Fil: Talou, Mariano Hernán. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; ArgentinaFil: Tomba Martinez, Analia Gladys. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; ArgentinaFil: Camerucci, Maria Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; ArgentinaElsevier Science Sa2012-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/43809Talou, Mariano Hernán; Tomba Martinez, Analia Gladys; Camerucci, Maria Andrea; Green mechanical evaluation of mullite porous compacts prepared by pre-gelling starch consolidation; Elsevier Science Sa; Materials Science and Engineering A: Structural Materials: Properties, Microstructure and Processing; 549; 7-2012; 30-370921-5093CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0921509312005205info:eu-repo/semantics/altIdentifier/doi/10.1016/j.msea.2012.03.111info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:50:52Zoai:ri.conicet.gov.ar:11336/43809instacron: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 09:50:52.895CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Green mechanical evaluation of mullite porous compacts prepared by pre-gelling starch consolidation |
title |
Green mechanical evaluation of mullite porous compacts prepared by pre-gelling starch consolidation |
spellingShingle |
Green mechanical evaluation of mullite porous compacts prepared by pre-gelling starch consolidation Talou, Mariano Hernán Starch Direct Consolidation Mullite Green Porous Microstructures Mechanical Properties Green Machining |
title_short |
Green mechanical evaluation of mullite porous compacts prepared by pre-gelling starch consolidation |
title_full |
Green mechanical evaluation of mullite porous compacts prepared by pre-gelling starch consolidation |
title_fullStr |
Green mechanical evaluation of mullite porous compacts prepared by pre-gelling starch consolidation |
title_full_unstemmed |
Green mechanical evaluation of mullite porous compacts prepared by pre-gelling starch consolidation |
title_sort |
Green mechanical evaluation of mullite porous compacts prepared by pre-gelling starch consolidation |
dc.creator.none.fl_str_mv |
Talou, Mariano Hernán Tomba Martinez, Analia Gladys Camerucci, Maria Andrea |
author |
Talou, Mariano Hernán |
author_facet |
Talou, Mariano Hernán Tomba Martinez, Analia Gladys Camerucci, Maria Andrea |
author_role |
author |
author2 |
Tomba Martinez, Analia Gladys Camerucci, Maria Andrea |
author2_role |
author author |
dc.subject.none.fl_str_mv |
Starch Direct Consolidation Mullite Green Porous Microstructures Mechanical Properties Green Machining |
topic |
Starch Direct Consolidation Mullite Green Porous Microstructures Mechanical Properties Green Machining |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/2.5 https://purl.org/becyt/ford/2 https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
The mechanical behavior of green porous mullite disks (volume porosity > 55%) prepared by the thermogelation of mullite aqueous suspensions with different native starches (i.e. potato, cassava and corn starches) was studied. One set of disks was prepared by thermal consolidation (70–80 °C, 2 h) of aqueous mullite suspensions (40 vol.%) containing 10 vol.% of starch pre-gelled at 55–60 °C and dried at 40 °C for 24 h. Another set of specimens was prepared by additional firing at 650 °C for 2 h to burn-out the starches. Both sets of disks were characterized by density measurements (Archimedes method), apparent porosity calculus, and microstructural analysis by SEM. Mechanical parameters such as fracture strength, apparent elastic modulus, fracture and final deformations and yield stress were determined from apparent stress–strain relations derived from load-displacement curves obtained by diametral compression testing. Moreover, typical crack patterns were evaluated and fractographic analysis was carried out by SEM. Mechanical results were analyzed in relation to the behavior of the starches in aqueous suspension and the properties of the developed gels, together with the respective microstructures before and after the burn-out process. Mechanical data were also considered taking into account the possibility of machining the green compacts formed by pre-gelling starch consolidation. Fil: Talou, Mariano Hernán. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina Fil: Tomba Martinez, Analia Gladys. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina Fil: Camerucci, Maria Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina |
description |
The mechanical behavior of green porous mullite disks (volume porosity > 55%) prepared by the thermogelation of mullite aqueous suspensions with different native starches (i.e. potato, cassava and corn starches) was studied. One set of disks was prepared by thermal consolidation (70–80 °C, 2 h) of aqueous mullite suspensions (40 vol.%) containing 10 vol.% of starch pre-gelled at 55–60 °C and dried at 40 °C for 24 h. Another set of specimens was prepared by additional firing at 650 °C for 2 h to burn-out the starches. Both sets of disks were characterized by density measurements (Archimedes method), apparent porosity calculus, and microstructural analysis by SEM. Mechanical parameters such as fracture strength, apparent elastic modulus, fracture and final deformations and yield stress were determined from apparent stress–strain relations derived from load-displacement curves obtained by diametral compression testing. Moreover, typical crack patterns were evaluated and fractographic analysis was carried out by SEM. Mechanical results were analyzed in relation to the behavior of the starches in aqueous suspension and the properties of the developed gels, together with the respective microstructures before and after the burn-out process. Mechanical data were also considered taking into account the possibility of machining the green compacts formed by pre-gelling starch consolidation. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-07 |
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/11336/43809 Talou, Mariano Hernán; Tomba Martinez, Analia Gladys; Camerucci, Maria Andrea; Green mechanical evaluation of mullite porous compacts prepared by pre-gelling starch consolidation; Elsevier Science Sa; Materials Science and Engineering A: Structural Materials: Properties, Microstructure and Processing; 549; 7-2012; 30-37 0921-5093 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/43809 |
identifier_str_mv |
Talou, Mariano Hernán; Tomba Martinez, Analia Gladys; Camerucci, Maria Andrea; Green mechanical evaluation of mullite porous compacts prepared by pre-gelling starch consolidation; Elsevier Science Sa; Materials Science and Engineering A: Structural Materials: Properties, Microstructure and Processing; 549; 7-2012; 30-37 0921-5093 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.sciencedirect.com/science/article/pii/S0921509312005205 info:eu-repo/semantics/altIdentifier/doi/10.1016/j.msea.2012.03.111 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-nd/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier Science Sa |
publisher.none.fl_str_mv |
Elsevier Science Sa |
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 |
_version_ |
1844613567754534912 |
score |
13.070432 |