Exploració per tema "Metals"

Ara es mostren els items 1-20 de 104

    • 3D FIB/FESEM tomography of grinding-induced damage in WC-Co cemented carbides 

      Roa Rovira, Joan Josep; Llanes Pitarch, Luis Miguel (Elsevier, 2020)
      Article
      Accés obert
      WC-Co cemented carbides (hardmetals) represent the backbone materials for the tooling industry. In order to achieve particular tool geometries, diamond wheel grinding is a well-established method for machining hardmetals. ...

    • A Formal Verification and Validation of a Low Magnetic Reynolds Number MHD Code for Fusion Applications 

      Suárez Cambra, Daniel; Khodak, Andrei; Mas de les Valls Ortiz, Elisabet; Batet Miracle, Lluís (Institute of Electrical and Electronics Engineers (IEEE), 2022-01-01)
      Article
      Accés obert
      As the nuclear fusion research advances, resear-chers and engineers focus more on the design of the required systems that complement the nuclear fusion reaction in the plasma of a Tokamak. Some proposals for breeding ...

    • A fuzzy approach for the selection of non-traditional sheet metal cutting processes 

      Cortés Sáenz, David; Gordillo Castillo, Nelly; Riba Romeva, Carles; Lloveras Macià, Joaquín (2015-09)
      Article
      Accés restringit per política de l'editorial
      This work presents a methodology for the selection and comparison of non-traditional sheet metal cutting processes as a new structure of selection by means of an expert system. The model is generated from a knowledge base ...

    • Acoblaments compòsit-compòsit i compòsit-metall 

      Escolano Benach, Roger (Universitat Politècnica de Catalunya, 2022-07-05)
      Treball Final de Grau
      Accés obert
      En aquesta memòria es recull un estudi bibliogràfic dels mètodes emprats en acoblaments compòsitcompòsit i compòsit-metall, excloent-ne els adhesius. S’ha recapitulat els mètodes més habituals en una cartografia visual i ...

    • An in situ investigation of the deformation mechanisms in a ß-quenched Ti-5Al-5V-5Mo-3Cr alloy 

      Barriobero Vila, Pere; Gussone, Joachim; Kelm, Klemens; Haubrich, Jan; Stark, Andreas; Schell, Norbert; Requena, Guillermo (2018-02)
      Article
      Accés obert
      The sequence of activation of deformation mechanisms in a near-ß Ti-5Al-5Mo-5V-3Cr alloy quenched from the ß-field is investigated as a function of strain during uniaxial compression at 0.001¿s-1 up to e = 0.041. Bulk in ...

    • Analysis of printing parameters for metal additive manufactured parts through Direct Ink Writing process 

      Bonada Bo, Jordi; Xuriguera Martin, Elena; Calvo Duarte, Laura; Poudelet, Louison; Cardona, Roger; Padilla, Jose Antonio; Niubó Eslava, Maria (2020-03-09)
      Article
      Accés obert
      Direct Ink Writing is an Additive Manufacturing process in which a metal ink is continuously extruded to built-up a green metal part. Therefore, a debinding and sintering process is required to obtain the final metal part. ...

    • Análisis y ajuste de las variables de proceso para la fabricación de polvos de aleaciones base estaño mediante un atomizador centrífugo 

      Ayllón Muro, Àxel (Universitat Politècnica de Catalunya, 2017-06)
      Treball Final de Grau
      Accés restringit per decisió de l'autor
      En el presente proyecto se ha realizado la puesta a punto de un prototipo para la atomización de polvo metálico mediante la técnica de atomización centrífuga, incluyendo los diferentes componentes que intervienen en el ...

    • Application of magnesium oxide for metal removal in mine water treatment 

      Navarro Flores, Andrés Francisco; Martínez da Matta, María Izabel (Multidisciplinary Digital Publishing Institute (MDPI), 2022-11-28)
      Article
      Accés obert
      In this study low-grade magnesium oxide (MgO) produced by calcinations of natural magnesite was used in mine water treatment using a laboratory-column device. The treatment of mine water from the abandoned Osor mine (NE ...

    • Application of mechanically alloyed MnAl particles to de-colorization of azo dyes 

      Abolighasemabadi, Mitra; Mbarek Wael, Ben; Casabella, Oriol; Roca Bisbe, Helena; Pineda Soler, Eloi; Escoda, Lluïsa; Suñol, Joan J. (2018-04-15)
      Article
      Accés obert
      The use of metallic particles has been shown to be an effective, low-cost method for degradation of many contaminating compounds. In this work, we analyze the efficiency of MnAl metallic powders for degrading azo dyes, ...

    • Arsenic and metal mobility from Au mine tailings in Rodalquilar (Almaría, SE Spain) 

      Navarro Flores, Andrés Francisco; Domènech Rubio, Luis Miguel (2010-02-19)
      Article
      Accés restringit per política de l'editorial
      In the old mining area of Rodalquilar, mine wastes, soil and sediments were characterized and the results revealed high concentration of Au, Ag, As, Bi,Cu, Fe, Mn, Pb, Se, Sb and Zn in tailings and sediments. The contaminant ...

    • Automated image analysis for single-atom detection in catalytic materials by transmission electron microscopy 

      Mitchell, Sharon; Parés Pont, Ferran; Faust Akl, Dario; Collins, Sean; Kepaptsoglou, Demie; Ramasse, Quentin; Garcia Gasulla, Dario; Pérez Ramírez, Javier; López Alonso, Nuria (2022-03-25)
      Article
      Accés obert
      Single-atom catalytic sites may have existed in all supported transition metal catalysts since their first application. Yet, interest in the design of single-atom heterogeneous catalysts (SACs) only really grew when advances ...

    • Automatización de la dosificación de Material en Polvo para procesos de impresión 3D metálicos 

      Giraldo Agudelo, Juan Felipe (Universitat Politècnica de Catalunya, 2024-01-29)
      Treball Final de Grau
      Accés obert
      Aquest Treball de Fi de Grau (TFG) se centra en la creació d'una solució automatitzada destinada al dosatge precís de material en pols utilitzada en els processos additius de metalls. Per a abordar aquest desafiament, ...

    • Bulk-processed plasmonic plastic nanocomposite materials for optical hydrogen detection 

      Darmadi, Iwan; Östergren, Ida; Langhammer, Christoph; Lerch, Sarah; Lund, Anja; Moth-Poulsen, Kasper; Müller, Christian (2023-07-04)
      Article
      Accés obert
      Sensors are ubiquitous, and their importance is only going to increase across many areas of modern technology. In this respect, hydrogen gas (H2) sensors are no exception since they allow mitigation of the inherent safety ...

    • Caracterització electroquímica d'aliatges "High-Entropy" 

      Grande Bayona, David (Universitat Politècnica de Catalunya, 2020-10-22)
      Treball Final de Grau
      Accés obert
      En aquest treball s’han produït una sèrie de composicions d’uns aliatges anomenats high-entropy metallic glasses. Aquest tipus d’aliatges són una combinació d’aliatges high-entropy, creats a partir de la fusió a alta ...

    • Caracterizacion térmica de hueso y substratos metálicos para uso biomédico 

      Peña Rodríguez, Gabriel; Méndez González, Magdalena; Calderón Arenas, Antonio; Cruz Orea, Alfredo; Sánchez Sinencio, Feliciano (Sociedad Ibérica de Biomecánica y Biomateriales, 2000-12)
      Article
      Accés obert
      En este trabajo reportamos mediciones de difusividad térmica a temperatura ambiente en dos diferentes cortes de hueso denso de res, hueso de res en polvo e hidroxiapatita comercial en polvo. Realizamos una comparación ...

    • Caracterización de la microestructura binaria ("chessboard pattern") en muestras de Ti-6Al-4V fabricadas por SLM (Selective Laser Melting) 

      Steinlin, Sophie (Universitat Politècnica de Catalunya, 2020-02-14)
      Projecte Final de Màster Oficial
      Accés obert
      Realitzat a/amb:   Université de Lorraine
      Selective laser melting (SLM) is an additive manufacturing process that offers efficient manufacturing of complex parts with good mechanical properties. For SLM, process parameters and post-processing are of importance as ...

    • Caracterización mecánica y microestructural de superficies de metal duro con implantación iónica 

      García González, Sandra (Universitat Politècnica de Catalunya, 2021-10-18)
      Projecte Final de Màster Oficial
      Accés obert
      El metal duro es un material compuesto por cerámica-metal (cermet). Consiste en carburo de tungsteno (WC) en una matriz de cobalto. Es un material altamente utilizado en la industria por sus propiedades mecánicas: es un ...

    • Caracterización y tratamiento de suelos contaminados por actividades mineras mediante materiales reactivos 

      Navarro Flores, Andrés Francisco (2010)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      En áreas mineras abandonadas, como en la antigua cuenca minera de Anglés (Girona), existen diversas zonas afectadas por la minería del Pb, habiéndose producido la contaminación de los suelos y aguas subterráneas, a causa ...

    • Catalytic transformation of biomass-derived 5-hydroxymethylfurfural over supported bimetallic iridium-based catalysts 

      Chimentäo, Ricardo José; Oliva Muñoz, Héctor; Russo, Verdiana; Llorca Piqué, Jordi; Garcia Fierro, Jose-Luis (American Chemical Society (ACS), 2021-04-28)
      Article
      Accés obert
      5-Hydroxymethylfurfural (HMF) is a biobased platform chemical that can be valorized into a spectrum of valuable products. In this report, supported Ir, Ir–Co, Ir–Ni, and Ir–Ru catalysts were investigated for this purpose. ...

    • Change of the k-factor of printed sensors after multiaxial load 

      Cortés Bañeres, Victor (Universitat Politècnica de Catalunya, 2017-08-31)
      Treball Final de Grau
      Accés obert
      In this thesis, the analysis of the variation of the k-factor after multiaxial loads in a uniaxial tensile test is done. For the performance of this project, the characterization of the DC04 steel is made, analyzing the ...