Consolidación de polvo de hierro mediante sinterización por resistencia eléctrica

J. M. Montes; J. A. Rodríguez; E. J. Herrera

doi:10.3989/revmetalm.2003.v39.i2.320

Consolidation of iron powder by electrical resistance sintering

Authors

J. M. Montes Grupo de Metalurgia e Ingeniería de Materiales. Escuela Superior de Ingenieros, Universidad de Sevilla
J. A. Rodríguez Grupo de Metalurgia e Ingeniería de Materiales. Escuela Superior de Ingenieros, Universidad de Sevilla
E. J. Herrera Grupo de Metalurgia e Ingeniería de Materiales. Escuela Superior de Ingenieros, Universidad de Sevilla

DOI:

https://doi.org/10.3989/revmetalm.2003.v39.i2.320

Keywords:

Electrical resistance sintering, Iron, Hot pressing, Powder metallurgy

Abstract

A particular kind of hot pressing, in which the powder mass, subjected to pressure, is simultaneously heated by passing through a high-intensity electrical current is described and analysed. Commercial iron powder was used for the experimental work. Special emphasis is given to the densification kinetics. A qualitative microscopic interpretation of densification rate is suggested, based on the hypothesis of partial formation and rapid solidification of liquid phase. This interpretation is supported by the evolution of global porosity and electrical resistance of specimens during the electrical sintering process. The microstructural characteristics of compacts consolidated in the conventional way (cold pressing and furnace sintering) and by electrical resistance sintering are compared.

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Published

2003-04-30

How to Cite

Montes, J. M., Rodríguez, J. A., & Herrera, E. J. (2003). Consolidation of iron powder by electrical resistance sintering. Revista De Metalurgia, 39(2), 99–106. https://doi.org/10.3989/revmetalm.2003.v39.i2.320

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Issue

Vol. 39 No. 2 (2003)

Section

Articles

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