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Formación de la Aleación Zn-21.6%Al-2.0%Cu por Pulvimetalurgia: Efecto del Lubricante en las Briquetas

Authors: Aragón,José A;

Formación de la Aleación Zn-21.6%Al-2.0%Cu por Pulvimetalurgia: Efecto del Lubricante en las Briquetas

Abstract

En este trabajo se presenta la elaboración de la aleación Zn-21.6%Al-2.0%Cu (porcentajes en masa), por un método de metalurgia de polvos y se analiza el efecto de distintos lubricantes, usados en las briquetas. Se elaboraron mezclas de polvos de Zn, Al y Cu con acetona, cera y ácido esteárico como lubricantes, y se compactaron uniaxialmente a una presión de 77.4 MPa. Las briquetas se sinterizaron bajo un flujo de argón y en intervalos de 15 minutos a 357 °C. Los materiales fueron caracterizados estructuralmente con microscopio óptico, ensayos de microdureza Vickers, dureza Rockwell F y difracción de rayos X. El ácido esteárico y la cera funcionan similarmente como lubricantes y la acetona retarda la formación de la aleación, pero causa mayores durezas, luego del sinterizado. La aleación se forma totalmente cuando el lubricante es cera y se sinteriza más de 45 minutos. La rapidez de formación de la aleación depende del tipo de lubricante en las briquetas.

Keywords

aleación Zn-21.6%Al-2.0%Cu, sinterizado, metalurgia de polvos, caracterización estructural

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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!
0
Average
Average
Average