Enviaments recents

  • Strength and reliability of WC-Co cemented carbides: understanding microstructural effects on the basis of R-curve behavior and fractography 

    Tarragó Cifre, Jose María; Coureaux Mustelier, David; Torres Hernandez, Yadir; Jiménez Piqué, Emilio; Schneider, Ludwig; Fair, Jonathan; Llanes Pitarch, Luis Miguel (2018-02)
    Article
    Accés obert
    Strength and reliability of WC-Co cemented carbides (hardmetals) are dependent on effective fracture toughness as well as on nature, size and distribution of processing flaws. Regarding toughness, they exhibit a crack ...
  • Femtosecond laser multi-patterning of zirconia for screening of cell-surface interactions 

    Stanciuc, Ana Maria; Flamant, Quentin; Sprecher, Christoph Martin; Alini, Mauro; Anglada Gomila, Marcos Juan; Peroglio, Marianna (Elsevier, 2018-03)
    Article
    Accés restringit per política de l'editorial
    Yttria-stabilised tetragonal zirconia polycrystals (3Y-TZP) bioinert ceramics combine excellent strength and toughness, good aesthetics, high resistance to corrosion and absence of allergic reaction. However, improved ...
  • Chemical and nanoindentation study of diffusion during sintering of 12Ce-ZrO2/3Y-ZrO2 powder layers 

    Roa Rovira, Joan Josep; Turón Viñas, Miquel; Tovar Vargas, Daniela; Ledesma, J.; Anglada Gomila, Marcos Juan (2018-02-01)
    Article
    Accés restringit per política de l'editorial
    Tetragonal zirconia polycrystals doped with 3% mol of yttria (3Y-ZrO2) exhibit excellent mechanical properties and biocompatibility. However, under humid environments, their surface structural integrity is degraded by aging ...
  • Grinding-induced metallurgical alterations in the binder phase of WC-Co cemented carbides 

    Yang, Jing; Roa Rovira, Joan Josep; Schwind, Martin; Odén, M.; Johansonn Joesaar, M. P.; Llanes Pitarch, Luis Miguel (2017-12)
    Article
    Accés obert
    The metallic binder phase dictates the toughening behavior of WC-Co cemented carbides (hardmetals), even though it occupies a relative small fraction of the composite. Studies on deformation and phase transformation of the ...
  • Influence of temperature on the biaxial strength of cemented carbides with different microstructures 

    Chicardi, E; Bermejo, Raul; Gotor Martínez, Francisco José; Llanes Pitarch, Luis Miguel; Torres Hernandez, Yadir (2018-02)
    Article
    Accés obert
    The effect of the temperature on the mechanical strength of WC-Co cemented carbides with different microstructures (grain size and binder content) was evaluated. Biaxial flexural tests were performed on three cemented ...
  • 3D characterization of cubic boron nitride (CBN) composites used as tool material for high precision abrasive machining processes 

    Fang, Shiqi; Llanes Pitarch, Luis Miguel; Bähre, Dirk (2017-07-29)
    Article
    Accés restringit per política de l'editorial
    Cubic boron nitride (CBN) composites are widely used as cutting tool materials for high precision abrasive machining processes. They are composed of super hard CBN abrasives and a softer binder. CBN abrasives are one of ...
  • Chemical segregation in a 12Ce-ZrO2/3Y-ZrO2 ceramic composite 

    Roa Rovira, Joan Josep; Aboulfadl, Hisham; Barrirero, Jenifer; Turón Viñas, Miquel; Mücklich, Frank; Anglada Gomila, Marcos Juan (2017-10-01)
    Article
    Accés restringit per política de l'editorial
    In restorative dentistry, 3Y-ZrO2 ceramics are widely accepted for fabricating dental crowns, bridges and implants due to their good biocompatibility, excellent mechanical properties and high aesthetics potential. However, ...
  • Wear characterization of cemented carbides (WC-CoNi) processed by laser surface texturing under abrasive machining conditions 

    Fang, Shiqi; Llanes Pitarch, Luis Miguel; Bähre, Dirk (2017-09-01)
    Article
    Accés obert
    Cemented carbides are outstanding engineering materials widely used in quite demanding material removal applications. In this study, laser surface texturing is implemented for enhancing, at the surface level, the intrinsic ...
  • Structural and mechanical properties of Zr1-x Mox thin films: from the nano-crystalline to the amorphous state 

    Borroto-Ramírez, Alejandro; Bruyère, Sthepanie; Thurieau, Nicolas; Gendarme, Christine; Jiménez Piqué, Emilio; Roa Rovira, Joan Josep; Pierson, Jean Fronçois; Mücklich, Franck; Horwat, David (2017-12-30)
    Article
    Accés restringit per política de l'editorial
    Zr1-xMox thin films were synthesized on glass substrates by co-sputtering molybdenum and zirconium targets in the presence of argon with x in the 0.32–0.95 range. From X-ray diffraction analyses and transmission electron ...
  • School research in Catalonia : between tradition and innovation 

    Nadal, Ivan; Hernández Fernández, Antonio; Luque, Frederic; Salán Ballesteros, Maria Núria (2016-12)
    Article
    Accés restringit per política de l'editorial
    The research-work (RW) is part of an official high school curriculum in Catalonia. The relevance of the proposal focuses on the fact that it complements the traditional tutoring project and is open to all educational levels ...
  • Nanosecond-laser patterning of 3Y-TZP: damage and microstructural changes 

    Roitero, Erica; Lasserre, F.; Roa Rovira, Joan Josep; Anglada Gomila, Marcos Juan; Mücklich, F.; Jiménez Piqué, Emilio (Elsevier, 2017-12)
    Article
    Accés obert
    The aim of this study is to characterize in detail the microstructural changes and collateral damage induced by direct laser patterning on the surface of dental-grade zirconia (3Y-TZP) employing an interference setup with ...
  • Thermal and mechanical stability of wurtzite-ZrAlN/cubic-TiN and wurtzite-ZrAlN/cubic-ZrN multilayers 

    Chen, Y.H.; Rogstrom, Lina; Roa Rovira, Joan Josep; Zhu, J. Q.; Schramm, I. C.; Johnson, L. J. S.; Schell, N.; Mücklich, Franck; Anglada Gomila, Marcos Juan; Oden, M. (Elsevier, 2017-09-15)
    Article
    Accés obert
    The phase stability and mechanical properties of wurtzite (w)-Zr0.25Al0.75N/cubic (c)-TiN and w-Zr0.25Al0.75N/c-ZrN multilayers grown by arc evaporation are studied. Coherent interfaces with an orientation relation of c-TiN ...

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