Surface study of vitreous carbon obtained from glassy carbon powder
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo de conferência |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1557/opl.2012.291 http://hdl.handle.net/11449/73334 |
Resumo: | This work presents a surface study of monolithic vitreous (or glassy) carbon - MVC - obtained from vitreous carbon powder. Defective MVC pieces are crushed in a ball mill and size classified by sifting. The MVC powder is mixed with furfuryl-alcohol resin and compacted in a mould using a hydraulic press. Samples with different powder granulometries are produced in this way and carbonized in a furnace under nitrogen atmosphere. Complete carbonization of the powder is achieved in only one day and losses due to breakage of the pieces is less than 5%. These results compare very favorably with respect to traditional MVC production methods where full carbonization may require up to seven days and losses due to breakage can be as high as 70%. After carbonization, samples are sanded and polished. Surface roughness and microstructure are characterized by light microscopy. Porosity is quantified from micrographs using ImageJ software and nanometric height variations are measured by atomic force microscopy. © 2012 Materials Research Society. |
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Surface study of vitreous carbon obtained from glassy carbon powderGranulometriesHeight variationHydraulic pressNanometricsNitrogen atmospheresProduction methodsSurface studyVitreous carbonAtomic force microscopyBall millsCarbonizationHydraulic machinerySurface roughnessGlassy carbonThis work presents a surface study of monolithic vitreous (or glassy) carbon - MVC - obtained from vitreous carbon powder. Defective MVC pieces are crushed in a ball mill and size classified by sifting. The MVC powder is mixed with furfuryl-alcohol resin and compacted in a mould using a hydraulic press. Samples with different powder granulometries are produced in this way and carbonized in a furnace under nitrogen atmosphere. Complete carbonization of the powder is achieved in only one day and losses due to breakage of the pieces is less than 5%. These results compare very favorably with respect to traditional MVC production methods where full carbonization may require up to seven days and losses due to breakage can be as high as 70%. After carbonization, samples are sanded and polished. Surface roughness and microstructure are characterized by light microscopy. Porosity is quantified from micrographs using ImageJ software and nanometric height variations are measured by atomic force microscopy. © 2012 Materials Research Society.Photonics Division Institute for Advanced Studies DCTA, Trevo Coronel Aviador Jose Alberto Albano do Amarante, 1, São José dos Campos, CEP 12228-001Department of Materials and Technology São Paulo State University, Av. Ariberto Pereira da Cunha, 333, Guaratinguetá-SP, CEP 12516-410Department of Materials and Technology São Paulo State University, Av. Ariberto Pereira da Cunha, 333, Guaratinguetá-SP, CEP 12516-410DCTAUniversidade Estadual Paulista (Unesp)Dondeo, F.Damiao, A. J.Miyakawa, W.Nascimento, F.Fernandes, L.Oishi, S. [UNESP]Botelho, E. [UNESP]2014-05-27T11:26:31Z2014-05-27T11:26:31Z2012-05-22info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObject25-30http://dx.doi.org/10.1557/opl.2012.291Materials Research Society Symposium Proceedings, v. 1373, p. 25-30.0272-9172http://hdl.handle.net/11449/7333410.1557/opl.2012.2912-s2.0-84861155505Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMaterials Research Society Symposium Proceedings0,139info:eu-repo/semantics/openAccess2021-10-23T21:44:11Zoai:repositorio.unesp.br:11449/73334Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-23T21:44:11Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Surface study of vitreous carbon obtained from glassy carbon powder |
title |
Surface study of vitreous carbon obtained from glassy carbon powder |
spellingShingle |
Surface study of vitreous carbon obtained from glassy carbon powder Dondeo, F. Granulometries Height variation Hydraulic press Nanometrics Nitrogen atmospheres Production methods Surface study Vitreous carbon Atomic force microscopy Ball mills Carbonization Hydraulic machinery Surface roughness Glassy carbon |
title_short |
Surface study of vitreous carbon obtained from glassy carbon powder |
title_full |
Surface study of vitreous carbon obtained from glassy carbon powder |
title_fullStr |
Surface study of vitreous carbon obtained from glassy carbon powder |
title_full_unstemmed |
Surface study of vitreous carbon obtained from glassy carbon powder |
title_sort |
Surface study of vitreous carbon obtained from glassy carbon powder |
author |
Dondeo, F. |
author_facet |
Dondeo, F. Damiao, A. J. Miyakawa, W. Nascimento, F. Fernandes, L. Oishi, S. [UNESP] Botelho, E. [UNESP] |
author_role |
author |
author2 |
Damiao, A. J. Miyakawa, W. Nascimento, F. Fernandes, L. Oishi, S. [UNESP] Botelho, E. [UNESP] |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
DCTA Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Dondeo, F. Damiao, A. J. Miyakawa, W. Nascimento, F. Fernandes, L. Oishi, S. [UNESP] Botelho, E. [UNESP] |
dc.subject.por.fl_str_mv |
Granulometries Height variation Hydraulic press Nanometrics Nitrogen atmospheres Production methods Surface study Vitreous carbon Atomic force microscopy Ball mills Carbonization Hydraulic machinery Surface roughness Glassy carbon |
topic |
Granulometries Height variation Hydraulic press Nanometrics Nitrogen atmospheres Production methods Surface study Vitreous carbon Atomic force microscopy Ball mills Carbonization Hydraulic machinery Surface roughness Glassy carbon |
description |
This work presents a surface study of monolithic vitreous (or glassy) carbon - MVC - obtained from vitreous carbon powder. Defective MVC pieces are crushed in a ball mill and size classified by sifting. The MVC powder is mixed with furfuryl-alcohol resin and compacted in a mould using a hydraulic press. Samples with different powder granulometries are produced in this way and carbonized in a furnace under nitrogen atmosphere. Complete carbonization of the powder is achieved in only one day and losses due to breakage of the pieces is less than 5%. These results compare very favorably with respect to traditional MVC production methods where full carbonization may require up to seven days and losses due to breakage can be as high as 70%. After carbonization, samples are sanded and polished. Surface roughness and microstructure are characterized by light microscopy. Porosity is quantified from micrographs using ImageJ software and nanometric height variations are measured by atomic force microscopy. © 2012 Materials Research Society. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-05-22 2014-05-27T11:26:31Z 2014-05-27T11:26:31Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/conferenceObject |
format |
conferenceObject |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1557/opl.2012.291 Materials Research Society Symposium Proceedings, v. 1373, p. 25-30. 0272-9172 http://hdl.handle.net/11449/73334 10.1557/opl.2012.291 2-s2.0-84861155505 |
url |
http://dx.doi.org/10.1557/opl.2012.291 http://hdl.handle.net/11449/73334 |
identifier_str_mv |
Materials Research Society Symposium Proceedings, v. 1373, p. 25-30. 0272-9172 10.1557/opl.2012.291 2-s2.0-84861155505 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Materials Research Society Symposium Proceedings 0,139 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
25-30 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1797789974272147456 |