Sliding wear resistance of sintered SiC-fiber bonded ceramics

Advanced SiC-based ceramics and fiber reinforced composites are interesting materials for a wide variety of applications involving sliding wear conditions because of their excellent thermomechanical properties. The microstructure and wear resistance of sintered SiC fiber bonded ceramics (SA Tyrannoh...

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Detalles Bibliográficos
Autores: Vera García, María del Carmen, Ramírez Rico, Joaquín, Martínez Fernández, Julián, Mritjunjay, Singh
Tipo de recurso: artículo
Estado:Versión enviada para evaluación y publicación
Fecha de publicación:2015
País:España
Institución:Universidad de Sevilla (US)
Repositorio:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/72288
Acceso en línea:https://hdl.handle.net/11441/72288
https://doi.org/10.1016/j.ijrmhm.2014.06.020
Access Level:acceso abierto
Palabra clave:Silicon carbide
Wear
Composites
Fibers
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spelling Sliding wear resistance of sintered SiC-fiber bonded ceramicsVera García, María del CarmenRamírez Rico, JoaquínMartínez Fernández, JuliánMritjunjay, SinghSilicon carbideWearCompositesFibersAdvanced SiC-based ceramics and fiber reinforced composites are interesting materials for a wide variety of applications involving sliding wear conditions because of their excellent thermomechanical properties. The microstructure and wear resistance of sintered SiC fiber bonded ceramics (SA Tyrannohex) were studied. The material is composed of SiC-fibers in two orientations, with polygonal cross sections and cores having higher carbon content than their surroundings, as observed with SEM. A thin layer of C exists between the fibers. This layer has been found to be a turbostratic-layered structure oriented parallel to the fiber surface. XRD shows that the material is highly crystalline and composed mostly of β-SiC. Unlubricated wear behavior of the SA-Tyrannohex material when sliding against a Si3N4 ball in air at room temperature was evaluated. Experiments were performed using a pin on disk apparatus, under different normal loads of 2, 5 and 10 N at sliding speeds of 25, 50, 100 mm/s. A decrease of the friction coefficient with load was found due to the presence of the turbostratic carbon layer between the fibers. Wear rates of the order of 100 mm3/MJ were obtained, independently of sliding speed. Microfracture of the fibers is the main wear mechanism.ElsevierFísica de la Materia Condensada2015info:eu-repo/semantics/articleinfo:eu-repo/semantics/submittedVersionapplication/pdfapplication/pdfhttps://hdl.handle.net/11441/72288https://doi.org/10.1016/j.ijrmhm.2014.06.020reponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésInternational Journal of Refractory and Hard Materials, 49 (1), 232-239.http://dx.doi.org/10.1016/j.ijrmhm.2014.06.020info:eu-repo/semantics/openAccessoai:idus.us.es:11441/722882026-06-17T12:51:07Z
dc.title.none.fl_str_mv Sliding wear resistance of sintered SiC-fiber bonded ceramics
title Sliding wear resistance of sintered SiC-fiber bonded ceramics
spellingShingle Sliding wear resistance of sintered SiC-fiber bonded ceramics
Vera García, María del Carmen
Silicon carbide
Wear
Composites
Fibers
title_short Sliding wear resistance of sintered SiC-fiber bonded ceramics
title_full Sliding wear resistance of sintered SiC-fiber bonded ceramics
title_fullStr Sliding wear resistance of sintered SiC-fiber bonded ceramics
title_full_unstemmed Sliding wear resistance of sintered SiC-fiber bonded ceramics
title_sort Sliding wear resistance of sintered SiC-fiber bonded ceramics
dc.creator.none.fl_str_mv Vera García, María del Carmen
Ramírez Rico, Joaquín
Martínez Fernández, Julián
Mritjunjay, Singh
author Vera García, María del Carmen
author_facet Vera García, María del Carmen
Ramírez Rico, Joaquín
Martínez Fernández, Julián
Mritjunjay, Singh
author_role author
author2 Ramírez Rico, Joaquín
Martínez Fernández, Julián
Mritjunjay, Singh
author2_role author
author
author
dc.contributor.none.fl_str_mv Física de la Materia Condensada
dc.subject.none.fl_str_mv Silicon carbide
Wear
Composites
Fibers
topic Silicon carbide
Wear
Composites
Fibers
description Advanced SiC-based ceramics and fiber reinforced composites are interesting materials for a wide variety of applications involving sliding wear conditions because of their excellent thermomechanical properties. The microstructure and wear resistance of sintered SiC fiber bonded ceramics (SA Tyrannohex) were studied. The material is composed of SiC-fibers in two orientations, with polygonal cross sections and cores having higher carbon content than their surroundings, as observed with SEM. A thin layer of C exists between the fibers. This layer has been found to be a turbostratic-layered structure oriented parallel to the fiber surface. XRD shows that the material is highly crystalline and composed mostly of β-SiC. Unlubricated wear behavior of the SA-Tyrannohex material when sliding against a Si3N4 ball in air at room temperature was evaluated. Experiments were performed using a pin on disk apparatus, under different normal loads of 2, 5 and 10 N at sliding speeds of 25, 50, 100 mm/s. A decrease of the friction coefficient with load was found due to the presence of the turbostratic carbon layer between the fibers. Wear rates of the order of 100 mm3/MJ were obtained, independently of sliding speed. Microfracture of the fibers is the main wear mechanism.
publishDate 2015
dc.date.none.fl_str_mv 2015
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/submittedVersion
format article
status_str submittedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/11441/72288
https://doi.org/10.1016/j.ijrmhm.2014.06.020
url https://hdl.handle.net/11441/72288
https://doi.org/10.1016/j.ijrmhm.2014.06.020
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv International Journal of Refractory and Hard Materials, 49 (1), 232-239.
http://dx.doi.org/10.1016/j.ijrmhm.2014.06.020
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:idUS. Depósito de Investigación de la Universidad de Sevilla
instname:Universidad de Sevilla (US)
instname_str Universidad de Sevilla (US)
reponame_str idUS. Depósito de Investigación de la Universidad de Sevilla
collection idUS. Depósito de Investigación de la Universidad de Sevilla
repository.name.fl_str_mv
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