Browsing by Subject "Metals"

Now showing items 1-20 of 89

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

      Roa Rovira, Joan Josep; Llanes Pitarch, Luis Miguel (Elsevier, 2020)
      Article
      Open Access
      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
      Open Access
      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
      Restricted access - publisher's policy
      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)
      Bachelor thesis
      Open Access
      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 ...

    • 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
      Open Access
      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)
      Bachelor thesis
      Restricted access - author's decision
      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 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
      Open Access
      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
      Restricted access - publisher's policy
      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
      Restricted access - publisher's policy
      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 ...

    • Caracterització electroquímica d'aliatges "High-Entropy" 

      Grande Bayona, David (Universitat Politècnica de Catalunya, 2020-10-22)
      Bachelor thesis
      Open Access
      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
      Open Access
      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)
      Master thesis
      Open Access
      Covenantee:   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)
      Master thesis
      Open Access
      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)
      Conference lecture
      Restricted access - publisher's policy
      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
      Open Access
      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)
      Bachelor thesis
      Open Access
      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 ...

    • Characterization of bimetallic interface in Cu-Al and Ni-Cu rods cold-welded by ECAP 

      Zhilyaev, Alexander P.; Werner, Thomas; Cabrera Marrero, José M. (2019-11-23)
      Article
      Open Access
      While cold welding by equal channel angular pressing has already been confirmed to be a viable alternative to join materials that commonly tend to exhibit unwanted brittleness and other heat-induced properties, the exact ...

    • Combinatorial investigation of Al–Cu intermetallics using small-scale mechanical testing 

      Xiao, Yuan; Besharatloo, Hossein; Gan, Bin; Maeder, Xavier; Spolenak, Ralph; Wheeler, J.M. (2020-05-05)
      Article
      Open Access
      In the past two decades, small-scale mechanical testing has become ubiquitous for mechanical measurements, offering new opportunities to quantitatively probe the mechanical behavior of materials. In this study, we applied ...

    • Comparison of the electrolytic, ultrasounds and chemical cleaning in corroded naval steel 

      Devesa Rey, Rosa; Díaz Zuaza, Enrique; Urréjola Madriñán, Santiago (SARTI, 2021)
      Article
      Open Access
      Oxygen, salt and water are key factors afecting metal deterioration and leading to corrosion in a marine environment. Prolonged corrosion may compromise the use of the materials and this may have an important economic ...

    • Composition, nanostructure, and optical properties of silver and silver-copper lusters 

      Pradell Cara, Trinitat; Pavlov, R.S.; Gutiérrez Repiso, Carolina; Climent Font, Aurelio; Molera Marimon, Judit (American Institute of Physics (AIP), 2012-09-01)
      Article
      Open Access
      Lusters are composite thin layers of coinage metal nanoparticles in glass displaying peculiar optical properties and obtained by a process involving ionic exchange, diffusion, and crystallization. In particular, the origin ...