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Recolector de Ciencia Abierta, RECOLECTA
Article . 2010 . Peer-reviewed
License: CC BY NC ND
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Recolector de Ciencia Abierta, RECOLECTA
Article . 2010 . Peer-reviewed
License: CC BY NC ND
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Cobre nanocristalino y ultrafino obtenido por molienda mecánica

Authors: Rodríguez Baracaldo, R.; Benito Páramo, José Antonio; Cabrera Marrero, José M.;

Cobre nanocristalino y ultrafino obtenido por molienda mecánica

Abstract

Este artículo presenta un método de obtención y caracterización de muestras masivas de cobre con tamaño de grano ultrafino (inferior a 1 μm) y nanocristalino (inferior a 100 nm). La fabricación del cobre se realiza inicialmente por el método de molienda/ aleado mecánico, obteniendo un polvo de estructura nanocristalina que posteriormente es consolidado por medio de un proceso de compactación en tibio a alta presión. El cobre masivo es sometido a caracterización microestructural analizando la evolución del tamaño de grano durante todas las etapas del proceso de fabricación, determinando las condiciones necesarias para desarrollar muestras en una amplia gama de tamaños de grano. La caracterización mecánica indica un incremento en la microdureza hasta valores de 3,40 GPa para el polvo NC sin consolidar. La resistencia a compresión se ve incrementada al reducir el tamaño de grano, obteniendo un límite elástico de 650 MPa para consolidados con tamaños de grano de ~62 nm.

Peer Reviewed

Countries
Colombia, Spain
Keywords

mechanical milling, severa deformación plástica, molienda mecánica, Deformacions i tensions, ultrafine grain, ultra-fine grain, severe plastic deformation, Materials science, :Enginyeria dels materials::Metal·lúrgia [Àrees temàtiques de la UPC], Àrees temàtiques de la UPC::Enginyeria dels materials::Metal·lúrgia, copper, cobre, nanocrystalline, grano nanocristalino y ultrafino

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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