RT Journal Article
T1 A Method to Determine the Electrical Resistance of a Metallic Powder Mass under Compression
A1 Montes Martos, Juan Manuel
A1 Gómez Cuevas, Francisco de Paula
A1 Ternero Fernández, Fátima
A1 Astacio, Raquel
A1 Sánchez Caballero, Eduardo
A1 Cintas Físico, Jesús
AB In this paper, a phenomenological model to predict the value of the electrical resistance of acompressed metal powder mass is proposed. The model, based on the experimental compressibilityand resistivity-porosity curves, is useful in the field of the electrical resistance consolidation. In thisarea is often required to find out whether a certain mass of powder inside a die of specified innersection, and subjected to a certain compression, reaches a sufficiently small resistance value so that itcan be consolidated by electrical means. The model also predicts the electrical resistance value ofthe powder mass in case of powders with no oxide layers, or after removing them mechanically orelectrically by a previous activation process. The model predictions have been successfully validatedthrough direct measurements of electrical resistance in powder aggregates both in as-received stateand after electrical activation.
PB MDPI
SN 2075-4701
YR 2017
FD 2017
LK http://hdl.handle.net/10272/15237
UL http://hdl.handle.net/10272/15237
LA eng
NO Montes, J., Cuevas, F., Ternero, F., Astacio, R., Caballero, E., & Cintas, J. (2017). A Method to Determine the Electrical Resistance of a Metallic Powder Mass under Compression. Metals, 7(11), 479. https://doi.org/10.3390/met7110479
NO Financial support of the Ministerio de Economia y Competitividad (Spain) and Feder (EU) through the research projects DPI2015-69550-C2-1-P and DPI2015-69550-C2-2-P are gratefully acknowledged. The authors also wish to thank the technicians J. Pinto, M. Madrid and M. Sanchez (University of Seville, Spain) for experimental assistance.
DS Repositorio Institucional de la Universidad de Huelva
RD 30 may 2026