Experiencias en la fabricación de titanio con gradiente de porosidad mediante técnicas de pulvimetalurgia
- Autores
- Grinschpun, L.; Oldani, C.; Valdemarin, M.
- Año de publicación
- 2015
- Idioma
- español castellano
- Tipo de recurso
- documento de conferencia
- Estado
- versión publicada
- Descripción
- Fil: Grinschpun, L. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Materiales; Argentina.
Fil: Oldani, C. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Materiales; Argentina.
Fil: Valdemarin, M. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Materiales; Argentina.
Titanium is recognized as the best biometal for applications in bone implant.However it presents some difficulties as is the mismatch between its modulus of elasticity(stiffness) and that of the bone that replace. This difference produce stress-shielding, aphenomenon by which bone is retracted, weakens and can suffer a new fracture. One possiblesolution is to decrease the stiffness by obtaining a porous structure with controlled porosity innumber, size and shape of the pores. The presence of different tissues in contact with theimplant makes ideal to have a titanium metal structure with porosity gradients. A suitabletechnique for obtaining this structure is powder metallurgy (PM). This paper use PMtechniques with TiH2 as the titanium source and ammonium bicarbonate as pore spacerparticles, sintered at 1000 ° C in argon atmosphere. There were obtained samples withlongitudinal and radial porosity gradient. The main drawbacks are found in matrix fillingtechniques for compact the greens. This causes joints between layers with different porositynot adequate and separated by differential shrinkage during the sintering treatment. Despitethis, optimization of the treatment conditions enables the samples obtained present very goodadhesion between layers.
Fil: Grinschpun, L. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Materiales; Argentina.
Fil: Oldani, C. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Materiales; Argentina.
Fil: Valdemarin, M. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Materiales; Argentina.
Ingeniería de los Materiales - Materia
-
Material metálico
Óseo
Propiedades mecánicas
Implante
Biometales - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- Repositorio
- Institución
- Universidad Nacional de Córdoba
- OAI Identificador
- oai:rdu.unc.edu.ar:11086/550494
Ver los metadatos del registro completo
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Experiencias en la fabricación de titanio con gradiente de porosidad mediante técnicas de pulvimetalurgiaGrinschpun, L.Oldani, C.Valdemarin, M.Material metálicoÓseoPropiedades mecánicasImplanteBiometalesFil: Grinschpun, L. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Materiales; Argentina.Fil: Oldani, C. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Materiales; Argentina.Fil: Valdemarin, M. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Materiales; Argentina.Titanium is recognized as the best biometal for applications in bone implant.However it presents some difficulties as is the mismatch between its modulus of elasticity(stiffness) and that of the bone that replace. This difference produce stress-shielding, aphenomenon by which bone is retracted, weakens and can suffer a new fracture. One possiblesolution is to decrease the stiffness by obtaining a porous structure with controlled porosity innumber, size and shape of the pores. The presence of different tissues in contact with theimplant makes ideal to have a titanium metal structure with porosity gradients. A suitabletechnique for obtaining this structure is powder metallurgy (PM). This paper use PMtechniques with TiH2 as the titanium source and ammonium bicarbonate as pore spacerparticles, sintered at 1000 ° C in argon atmosphere. There were obtained samples withlongitudinal and radial porosity gradient. The main drawbacks are found in matrix fillingtechniques for compact the greens. This causes joints between layers with different porositynot adequate and separated by differential shrinkage during the sintering treatment. Despitethis, optimization of the treatment conditions enables the samples obtained present very goodadhesion between layers.Fil: Grinschpun, L. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Materiales; Argentina.Fil: Oldani, C. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Materiales; Argentina.Fil: Valdemarin, M. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Materiales; Argentina.Ingeniería de los Materiales2015info:eu-repo/semantics/conferenceObjectinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfhttp://hdl.handle.net/11086/550494spainfo:eu-repo/semantics/openAccessreponame:Repositorio Digital Universitario (UNC)instname:Universidad Nacional de Córdobainstacron:UNC2025-09-29T13:41:51Zoai:rdu.unc.edu.ar:11086/550494Institucionalhttps://rdu.unc.edu.ar/Universidad públicaNo correspondehttp://rdu.unc.edu.ar/oai/snrdoca.unc@gmail.comArgentinaNo correspondeNo correspondeNo correspondeopendoar:25722025-09-29 13:41:51.471Repositorio Digital Universitario (UNC) - Universidad Nacional de Córdobafalse |
dc.title.none.fl_str_mv |
Experiencias en la fabricación de titanio con gradiente de porosidad mediante técnicas de pulvimetalurgia |
title |
Experiencias en la fabricación de titanio con gradiente de porosidad mediante técnicas de pulvimetalurgia |
spellingShingle |
Experiencias en la fabricación de titanio con gradiente de porosidad mediante técnicas de pulvimetalurgia Grinschpun, L. Material metálico Óseo Propiedades mecánicas Implante Biometales |
title_short |
Experiencias en la fabricación de titanio con gradiente de porosidad mediante técnicas de pulvimetalurgia |
title_full |
Experiencias en la fabricación de titanio con gradiente de porosidad mediante técnicas de pulvimetalurgia |
title_fullStr |
Experiencias en la fabricación de titanio con gradiente de porosidad mediante técnicas de pulvimetalurgia |
title_full_unstemmed |
Experiencias en la fabricación de titanio con gradiente de porosidad mediante técnicas de pulvimetalurgia |
title_sort |
Experiencias en la fabricación de titanio con gradiente de porosidad mediante técnicas de pulvimetalurgia |
dc.creator.none.fl_str_mv |
Grinschpun, L. Oldani, C. Valdemarin, M. |
author |
Grinschpun, L. |
author_facet |
Grinschpun, L. Oldani, C. Valdemarin, M. |
author_role |
author |
author2 |
Oldani, C. Valdemarin, M. |
author2_role |
author author |
dc.subject.none.fl_str_mv |
Material metálico Óseo Propiedades mecánicas Implante Biometales |
topic |
Material metálico Óseo Propiedades mecánicas Implante Biometales |
dc.description.none.fl_txt_mv |
Fil: Grinschpun, L. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Materiales; Argentina. Fil: Oldani, C. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Materiales; Argentina. Fil: Valdemarin, M. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Materiales; Argentina. Titanium is recognized as the best biometal for applications in bone implant.However it presents some difficulties as is the mismatch between its modulus of elasticity(stiffness) and that of the bone that replace. This difference produce stress-shielding, aphenomenon by which bone is retracted, weakens and can suffer a new fracture. One possiblesolution is to decrease the stiffness by obtaining a porous structure with controlled porosity innumber, size and shape of the pores. The presence of different tissues in contact with theimplant makes ideal to have a titanium metal structure with porosity gradients. A suitabletechnique for obtaining this structure is powder metallurgy (PM). This paper use PMtechniques with TiH2 as the titanium source and ammonium bicarbonate as pore spacerparticles, sintered at 1000 ° C in argon atmosphere. There were obtained samples withlongitudinal and radial porosity gradient. The main drawbacks are found in matrix fillingtechniques for compact the greens. This causes joints between layers with different porositynot adequate and separated by differential shrinkage during the sintering treatment. Despitethis, optimization of the treatment conditions enables the samples obtained present very goodadhesion between layers. Fil: Grinschpun, L. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Materiales; Argentina. Fil: Oldani, C. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Materiales; Argentina. Fil: Valdemarin, M. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Materiales; Argentina. Ingeniería de los Materiales |
description |
Fil: Grinschpun, L. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Materiales; Argentina. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015 |
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info:eu-repo/semantics/conferenceObject info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_5794 info:ar-repo/semantics/documentoDeConferencia |
format |
conferenceObject |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11086/550494 |
url |
http://hdl.handle.net/11086/550494 |
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spa |
language |
spa |
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info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf |
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reponame:Repositorio Digital Universitario (UNC) instname:Universidad Nacional de Córdoba instacron:UNC |
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Repositorio Digital Universitario (UNC) - Universidad Nacional de Córdoba |
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