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Pulvimetalurgia: Proceso sostenible para la fabricación de carburos cementados en Colombia

Authors: Luis Carlos Ardila Téllez; Andres Fernando Gil Plazas; Victor Guillermo Barrientos Sossa; Liz Karen Herrera Quintero;

Pulvimetalurgia: Proceso sostenible para la fabricación de carburos cementados en Colombia

Abstract

En este trabajo se da a conocer la oportunidad de impulsar la industria colombiana hacia el desarrollo de nuevos materiales de altas prestaciones fabricados por vías pulvimetalúrgicas (PM) como alternativa a los procesos de fabricación convencional, generando nuevas necesidades para la industria nacional. El objetivo es describir el proceso de fabricación de materiales compuestos, tipo CERMET, formado por una fase CERámica la cual es carburo de wolframio (WC) y una fase METálica que es el cobalto (Co) y analizar los cambios a nivel microestructural de los materiales fabricados utilizando el proceso de sinterización en vacío. La aleación diseñada fue una mezcla de 88%WC y 12%Co de designación ISO K40; el proceso involucró el control de los materiales precursores que se encuentran en forma de polvo, seguido de los procesos de mezcla y molienda, para luego realizar la compactacióny sinterización. Se estudian las microestructuras y composiciones químicas obtenidas mediante microscopía electrónica de barrido (SEM-EDS); con el fin de evaluar el comportamiento mecánico del CERMET fabricado, se realizaron ensayos de microdureza alcanzando valores de 1289HV0.5 que se correlaciona con los bajos niveles de porosidad obtenidos de tipo A02, B00, C00, y tamaño de grano medio de 1,14 μm. Estos resultados indican que es posible fabricar materiales con altas prestaciones de resistencia al desgaste en el país. Se resalta la importancia que tiene potenciar la sinergia entre entidadesgubernamentales como SENA-Colciencias –Universidad Nacional para generar investigación aplicada en el país.

Keywords

pulvimetalurgia, sinterización, carburo de wolframio, compactación cermet, polvos metálicos, T1-995, TA1-2040, Engineering (General). Civil engineering (General), Technology (General)

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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!
1
Average
Average
Average
gold