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Browsing by Author "Gómez Cuevas, Francisco de Paula"
Now showing items 1-17 of 17
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A Method to Determine the Electrical Resistance of a Metallic Powder Mass under Compression
Montes Martos, Juan Manuel; Gómez Cuevas, Francisco de Paula
; Ternero Fernández, Fátima; Astacio, Raquel; Sánchez Caballero, Eduardo; Cintas Físico, Jesús (MDPI, 2017)
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, ... -
Amorphous Al-Ti Powders Prepared by Mechanical Alloying and Consolidated by Electrical Resistance Sintering
Urban, Petr; Ternero Fernández, Fátima; Caballero, Eduardo S.; Nandyala, Sooraj; Montes Martos, Juan Manuel; Gómez Cuevas, Francisco de Paula (MDPI, 2019-10)
A novel processing method for amorphous Al50Ti50 alloy, obtained by mechanical alloying and subsequently consolidated by electrical resistance sintering, has been investigated. The characterisation of the powders and the ... -
Capacitor Electrical Discharge Consolidation of Metallic Powders—A Review
Aranda Louvier, Rosa María; Ternero Fernández, Fátima; Lozano Pérez, Sergio; Montes Martos, Juan Manuel; Gómez Cuevas, Francisco de Paula (MDPI, 2021-04)
Manufacturing metallic materials from elemental or alloyed powders is an option in many industrial processes. Nevertheless, the traditional powder metallurgy processing including furnace sintering is at times detrimental ... -
Consolidation of iron powder by electrical discharge
Aranda Louvier, Rosa María; Ternero Fernández, Fátima; Astacio, Raquel; Urban, Petr; Gómez Cuevas, Francisco de Paula (Elsevier, 2022-07-25)
Capacitor electrical discharge consolidation (CEDC) is a technique that uses the heat of the Joule effect of a high intensity electric current to consolidate powders. In this study, the effect of the precompaction pressure ... -
Crystallization Process and Microstructural Evolution of Melt Spun Al-RE-Ni-(Cu) Ribbons
Gómez Cuevas, Francisco de Paula; Lozano Pérez, Sergio; Aranda Louvier, Rosa María; Astacio López, Raquel (MDPI, 2020-03)
The crystallization process, both at the initial and subsequent stages, of amorphous Al88-RE4-Ni8 alloys (RE = Y, Sm and Ce) has been studied. Additionally, the consequences of adding 1 at.% Cu replacing Ni or Al were ... -
Hard Metal Production by ERS: Processing Parameter Roles in Final Properties
Gallardo, José María; Agote, Iñigo; Astacio, Raquel; Gómez Cuevas, Francisco de Paula (MDPI, 2019-02)
Cemented carbide is a hard composite material, used widely in a variety of industries. The value of the global tungsten carbide market is expected to grow by 4.4% (compound annual growth rate) from 2017 to 2022. One of ... -
High temperature behavior of nanostructured Al powders obtained by mechanical alloying under NH3 flow
Caballero, Eduardo S.; Cintas Físico, Jesús; Gómez Cuevas, Francisco de Paula; Montes Martos, Juan Manuel; Herrera García, M. (American Institute of Physics, 2015)
Aluminium powder was mechanically alloyed under ammonia gas flow for different times (1-5 h) in order to produce a second-phase reinforcement, mainly by aluminium nitride (AlN). After milling, powders were consolidated ... -
In Situ Synthesis of Al-Based MMCs Reinforced with AlN by Mechanical Alloying under NH3 Gas
Caballero, Eduardo S.; Gómez Cuevas, Francisco de Paula; Ternero Fernández, Fátima; Astacio, Raquel; Montes Martos, Juan Manuel; Cintas Físico, Jesús (MDPI, 2018)
Aluminum matrix composites (AMCs) reinforced by aluminum nitride were prepared by mechanical alloying followed by a simple press and sintering method. Milling began under vacuum and after a period of between 1 and 4 h, ... -
Influence of Milling Atmosphere on the Controlled Formation of Ultrafine Dispersoids in Al-Based MMCs
Sánchez Caballero, Eduardo; Cintas Físico, Jesús; Gómez Cuevas, Francisco de Paula; Montes Martos, Juan Manuel; Ternero Fernández, Fátima (MDPI, 2016)
Properties of compacts made from aluminium powder, milled under different atmospheres, were evaluated. The duration of all the milling processes was 10 h, although different atmospheres were tested: vacuum, confined ... -
Influence of Processing Parameters on the Conduct of Electrical Resistance Sintering of Iron Powders
Astacio, Raquel; Sánchez Caballero, Eduardo; Gómez Cuevas, Francisco de Paula; Montes Martos, Juan Manuel; Ternero Fernández, Fátima (MDPI, 2020-04)
The influence of the applied pressure and electrical parameters on the macrostructure of specimens consolidated by the medium-frequency electrical resistance sintering technique (MF-ERS) is analysed in this work. This ... -
Influence of Temperature on Mechanical Properties of AMCs
Caballero, Eduardo S.; Ternero Fernández, Fátima; Urban, Petr; Gómez Cuevas, Francisco de Paula; Cintas Físico, Jesús (MDPI, 2020-06)
This research focused on studying the effect of temperature on the mechanical properties of aluminium matrix composites (AMCs) obtained by a powder metallurgy route. Aluminium powder was milled at room temperature for 5 ... -
Influence of the Total Porosity on the Properties of Sintered Materials—A Review
Ternero Fernández, Fátima; Guerra Rosa, Luís; Urban, Petr; Montes Martos, Juan Manuel; Gómez Cuevas, Francisco de Paula (MDPI, 2021-04)
Porosity is a characteristic present in most sintered materials, full densification only being achieved in special cases. For some sintered materials, porosity is indeed a desired characteristic, serving for the intended ... -
Medium-Frequency Electrical Resistance Sintering of Oxidized C.P. Iron Powder
Montes Martos, Juan Manuel; Gómez Cuevas, Francisco de Paula; Ternero Fernández, Fátima; Astacio, Raquel; Sánchez Caballero, Eduardo; Cintas Físico, Jesús (MDPI, 2018-06)
Commercially pure (C.P.) iron powders with a deliberate high degree of oxidation were consolidated by medium-frequency electrical resistance sintering (MF-ERS). This is a consolidation technique where pressure, and heat ... -
Medium-Frequency Electrical Resistance Sintering of Soft Magnetic Powder Metallurgy Iron Parts
Astacio, Raquel; Ternero Fernández, Fátima; Cintas Físico, Jesús; Gómez Cuevas, Francisco de Paula; Montes Martos, Juan Manuel (MDPI, 2021)
The fabrication of soft magnetic Fe parts by the medium-frequency electrical resistance sintering (MF-ERS) technique is studied in this paper. This consolidation technique involves the simultaneous application to metallic ... -
Phase stability, porosity distribution and microstructural evolution of amorphous Al50Ti50 powders consolidated by electrical resistance sintering
Urban, Petr; Gómez Cuevas, Francisco de Paula; Montes Martos, Juan Manuel; Cintas Físico, Jesús (American Institute of Physics, 2015)
The effect of intensity and duration of the electrical resistance sintering process on the phase stability, porosity distribution and microstructural evolution of Al50Ti50 amorphous powders is studied. The phase transformations ... -
Production of Ultrafine Grained Hardmetals by Electrical Resistance Sintering
Cintas Físico, Jesús; Astacio, Raquel; Gómez Cuevas, Francisco de Paula; Montes Martos, Juan Manuel; Weissgaerber, Thomas; Lagos, Miguel Ángel; Torres, Yadir; Gallardo, José María (MDPI, 2019)
In this work, powders of cemented ultrafine WC-6 wt.% Co were consolidated. The feasibility of the medium frequency electrical resistance sintering (MF-ERS) technique were studied to prevent WC grain growth during ... -
Simulation of the Electrical Resistance Sintering of Hardmetal Powders
Montes Martos, Juan Manuel; Viña, Francisco J. de la; Agote, Iñigo; Schubert, Thomas; Gómez Cuevas, Francisco de Paula; Torres, Yadir; Gallardo, José María; Cintas Físico, Jesús (Springer, 2019-08)
The simulation of the electrical resistance sintering (ERS) of hardmetal powders has been studied. The ERS process can produce a quick consolidation of electrical conductive powders by the simultaneous application of ...
