Now showing items 1-8 of 8

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      A Method to Determine the Electrical Resistance of a Metallic Powder Mass under Compression  [Article]

      Montes Martos, Juan Manuel; Gómez Cuevas, Francisco de Paula; Ternero Fernández, Fátima; Astacio López, Raquel; Sánchez Caballero, Eduardo; Cintas Físico, Jesús (MDPI, 2017-11-06)
      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, ...
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      Hard Metal Production by ERS: Processing Parameter Roles in Final Properties  [Article]

      Gallardo Fuentes, José María; Agote, Íñigo; Astacio López, Raquel; Schubert, Thomas; Cintas Físico, Jesús; Montes Martos, Juan Manuel; Torres Hernández, Yadir; Gómez Cuevas, Francisco de Paula (MDPI, 2019)
      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 the ...
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      In Situ Synthesis of Al-Based MMCs Reinforced with AlN by Mechanical Alloying under NH3 Gas  [Article]

      Sánchez Caballero, Eduardo; Cuevas, F. G.; Ternero Fernández, Fátima; Astacio López, 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, ...
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      Influence of Milling Atmosphere on the Controlled Formation of Ultrafine Dispersoids in Al-Based MMCs  [Article]

      Sánchez Caballero, Eduardo; Cintas Físico, Jesús; Cuevas, Francisco G.; Montes, J. M.; Ternero, 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 ...
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      Medium-frequency electrical resistance sintering of oxidized C.P. iron powder  [Article]

      Montes Martos, Juan Manuel; Gómez Cuevas, Francisco de Paula; Ternero Fernández, Fátima; Astacio López, Raquel; Sánchez Caballero, Eduardo; Cintas Físico, Jesús (MDPI, 2018)
      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 ...
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      Nanocrystalline Al Composites from Powder Milled under Ammonia Gas Flow  [Article]

      Cintas Físico, Jesús; Caballero, E. S.; Montes, J. M.; Cuevas, F. G.; Arévalo Mora, Cristina María (Hindawi Publishing Corporation, 2014)
      The production of high hardness and thermally stable nanocrystalline aluminium composites is described. Al powder was milled at room temperature in an ammonia flow for a period of less than 5 h. NH3 dissociation during ...
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      Obtención y procesado de aleaciones de grano ultrafino, nanométrico y amorfas mediante aleado mecánico  [Article]

      Cintas Físico, Jesús; Gómez Cuevas, Francisco de Paula; Montes, J. M.; Urban, Petr; Gallardo Fuentes, José María (Centro nacional de Investigaciones Metalurgicas, 2007)
      El Grupo de Metalurgia e Ingeniería de los Materiales de la Universidad de Sevilla ha desarrollado, durante los últimos quince años, diversas técnicas para la consolidación de aleaciones de aluminio obtenidas por aleado ...
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      Production of Ultrafine Grained Hardmetals by Electrical Resistance Sintering  [Article]

      Cintas Físico, Jesús; Astacio López, Raquel; Gómez Cuevas, Francisco de Paula; Montes Martos, Juan Manuel; Weissgaerber, Thomas; Lagos, Miguel Ángel; Torres Hernández, Yadir; Gallardo Fuentes, José María (MDPI, 2019-02)
      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 ...