Mechanical characterization of composites prepared from WC powders coated with Ni rich binders
Autor(a) principal: | |
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Data de Publicação: | 2008 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10316/4172 https://doi.org/10.1016/j.ijrmhm.2007.12.001 |
Resumo: | In this study composite powders of WC and Ni/Fe/Cr were prepared in an innovative way, which consists of the sputter-deposition of the metallic binder onto the tungsten carbide particles. Compacts of coated powders were sintered by conventional vacuum sintering followed by hot isostatic pressing (HIP) to reach almost full densities. In order to evaluate the mechanical properties of reduced specimens size (microcomponents), depth-sensing indentation equipment was used. This method enabled the evaluation of the hardness, H, Young's modulus, E, and the yield stress, [sigma]y, in a non-destructive way, using only one sample. For the composites of sputter-coated WC-Ni/Fe/Cr the results showed an effective reduction of H and E due to the properties of Ni and the binder characteristics of the coated powders, such as uniform distribution and nanometer structure. |
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Mechanical characterization of composites prepared from WC powders coated with Ni rich bindersSputteringTungsten carbideCoated powdersMechanical propertiesIn this study composite powders of WC and Ni/Fe/Cr were prepared in an innovative way, which consists of the sputter-deposition of the metallic binder onto the tungsten carbide particles. Compacts of coated powders were sintered by conventional vacuum sintering followed by hot isostatic pressing (HIP) to reach almost full densities. In order to evaluate the mechanical properties of reduced specimens size (microcomponents), depth-sensing indentation equipment was used. This method enabled the evaluation of the hardness, H, Young's modulus, E, and the yield stress, [sigma]y, in a non-destructive way, using only one sample. For the composites of sputter-coated WC-Ni/Fe/Cr the results showed an effective reduction of H and E due to the properties of Ni and the binder characteristics of the coated powders, such as uniform distribution and nanometer structure.http://www.sciencedirect.com/science/article/B6TY1-4RC6RBT-1/1/f67c40ef34f1bf4f921a4458983dbbf82008info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleaplication/PDFhttp://hdl.handle.net/10316/4172http://hdl.handle.net/10316/4172https://doi.org/10.1016/j.ijrmhm.2007.12.001engInternational Journal of Refractory Metals and Hard Materials. 26:5 (2008) 491-498Fernandes, C. M.Senos, A. M. R.Vieira, M. T.Antunes, J. M.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2020-11-06T16:49:07Zoai:estudogeral.uc.pt:10316/4172Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:58:31.852096Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Mechanical characterization of composites prepared from WC powders coated with Ni rich binders |
title |
Mechanical characterization of composites prepared from WC powders coated with Ni rich binders |
spellingShingle |
Mechanical characterization of composites prepared from WC powders coated with Ni rich binders Fernandes, C. M. Sputtering Tungsten carbide Coated powders Mechanical properties |
title_short |
Mechanical characterization of composites prepared from WC powders coated with Ni rich binders |
title_full |
Mechanical characterization of composites prepared from WC powders coated with Ni rich binders |
title_fullStr |
Mechanical characterization of composites prepared from WC powders coated with Ni rich binders |
title_full_unstemmed |
Mechanical characterization of composites prepared from WC powders coated with Ni rich binders |
title_sort |
Mechanical characterization of composites prepared from WC powders coated with Ni rich binders |
author |
Fernandes, C. M. |
author_facet |
Fernandes, C. M. Senos, A. M. R. Vieira, M. T. Antunes, J. M. |
author_role |
author |
author2 |
Senos, A. M. R. Vieira, M. T. Antunes, J. M. |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Fernandes, C. M. Senos, A. M. R. Vieira, M. T. Antunes, J. M. |
dc.subject.por.fl_str_mv |
Sputtering Tungsten carbide Coated powders Mechanical properties |
topic |
Sputtering Tungsten carbide Coated powders Mechanical properties |
description |
In this study composite powders of WC and Ni/Fe/Cr were prepared in an innovative way, which consists of the sputter-deposition of the metallic binder onto the tungsten carbide particles. Compacts of coated powders were sintered by conventional vacuum sintering followed by hot isostatic pressing (HIP) to reach almost full densities. In order to evaluate the mechanical properties of reduced specimens size (microcomponents), depth-sensing indentation equipment was used. This method enabled the evaluation of the hardness, H, Young's modulus, E, and the yield stress, [sigma]y, in a non-destructive way, using only one sample. For the composites of sputter-coated WC-Ni/Fe/Cr the results showed an effective reduction of H and E due to the properties of Ni and the binder characteristics of the coated powders, such as uniform distribution and nanometer structure. |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10316/4172 http://hdl.handle.net/10316/4172 https://doi.org/10.1016/j.ijrmhm.2007.12.001 |
url |
http://hdl.handle.net/10316/4172 https://doi.org/10.1016/j.ijrmhm.2007.12.001 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
International Journal of Refractory Metals and Hard Materials. 26:5 (2008) 491-498 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
aplication/PDF |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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