Artículo
A Method to Determine the Electrical Resistance of a Metallic Powder Mass under Compression
Autor/es | Montes Martos, Juan Manuel
Gómez Cuevas, Francisco de Paula Ternero Fernández, Fátima Astacio López, Raquel Sánchez Caballero, Eduardo Cintas Físico, Jesús |
Departamento | Universidad de Sevilla. Departamento de Ingeniería y Ciencia de los Materiales y del Transporte |
Fecha de publicación | 2017-11-06 |
Fecha de depósito | 2018-02-21 |
Publicado en |
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Resumen | In this paper, a phenomenological model to predict the value of the electrical resistance of a
compressed metal powder mass is proposed. The model, based on the experimental compressibility
and resistivity-porosity curves, ... In this paper, a phenomenological model to predict the value of the electrical resistance of a compressed metal powder mass is proposed. The model, based on the experimental compressibility and resistivity-porosity curves, is useful in the field of the electrical resistance consolidation. In this area is often required to find out whether a certain mass of powder inside a die of specified inner section, and subjected to a certain compression, reaches a sufficiently small resistance value so that it can be consolidated by electrical means. The model also predicts the electrical resistance value of the powder mass in case of powders with no oxide layers, or after removing them mechanically or electrically by a previous activation process. The model predictions have been successfully validated through direct measurements of electrical resistance in powder aggregates both in as-received state and after electrical activation. |
Agencias financiadoras | Ministerio de Economía y Competitividad (MINECO). España |
Identificador del proyecto | DPI2015-69550-C2-1-P
DPI2015-69550-C2-2-P |
Cita | Montes Martos, J.M.,Gómez Cuevas, FdP, Ternero Fernández, F., Astacio López, R., Sánchez Caballero, E. y Cintas Físico, J. (2017). A Method to Determine the Electrical Resistance of a Metallic Powder Mass under Compression. Metals, 7 (11), 1-9. |
Ficheros | Tamaño | Formato | Ver | Descripción |
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metals-07-00479.pdf | 1.163Mb | [PDF] | Ver/ | |