Enviaments recents

  • 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 ...
  • Deformation mechanisms induced by nanoindentation tests on a metastable austenitic stainless steel: a FIB/SIM investigation 

    Sapezanskaia, Ina; Roa Rovira, Joan Josep; Fargas Ribas, Gemma; Turón Viñas, Miquel; Trifonov, T.; Kouitat Njiwa, R.; Redjaïmia, A.; Mateo García, Antonio Manuel (2017-09)
    Article
    Accés obert
    Metastable austenitic stainless steels are materials that can undergo austenite to martensite phase transformation when subjected to deformation and thus they represent a multiphase material with interesting mechanical ...
  • Effect of the filler on the nanomechanical properties of polypropylene in contact with paraffinic phase change material 

    Giró Paloma, Jessica; Rayón Encinas, Emilio; Roa Rovira, Joan Josep; Martínez López, Monica; Fernández Renna, Ana Inés (2015-02)
    Article
    Accés obert
    As the changes on the mechanical properties with depth of indentation provide valuable information that may be suitable for design purposes, nanoindentation is an adequate technique for investigating the nanomechanical ...
  • Annealing aged zirconia: study of surface mechanical properties at the micrometric length scale 

    Roa Rovira, Joan Josep; Anglada Gomila, Marcos Juan (Elsevier, 2015-03-01)
    Article
    Accés obert
    The annealing of hydrothermal aged zirconia has been studied by analysing the changes in microstructure and surface mechanical properties in terms of the annealing temperature. In this experimental work, a systematic micro- ...
  • Chemical milling effect on the low cycle fatigue properties of cast Ti-6Al-2Sn-4Zr-2Mo alloy 

    Sefer, Birhan; Gaddam, Raghuveer; Roa Rovira, Joan Josep; Mateo García, Antonio Manuel; Antti, Marta-lena; Pederson, Robert (2016-11-01)
    Article
    Accés obert
    The current research work presents the chemical milling effect on the low cycle fatigue properties of cast Ti–6Al–2Sn–4Zr–2Mo alloy. Chemical milling treatment is one of the final steps in manufacturing titanium alloy ...
  • Disclosure day on relativity: a science activity beyond the classroom 

    Aragoneses, Andrés; Salán Ballesteros, Maria Núria; Hernández Fernández, Antonio (2017-04)
    Article
    Accés obert
    An important goal for students in engineering education is the ability to present and defend a project in front of a technical audience. We have designed an activity for helping students to work the independent learning ...
  • Focused ion beam tomography of WC-Co cemented carbides 

    Jiménez Piqué, Emilio; Turón Viñas, Miquel; Chen, H.; Todorov Trifonov, Trifon; Fair, Jonathan; Tarrés, E.; Llanes, Angels (2017-09-01)
    Article
    Accés obert
    The microstructure of three different grades of WC-Co cemented carbides (hardmetals) has been reconstructed in three dimensions after sequential images obtained by focused ion beam. The three dimensional microstructual ...
  • Mechanical strength of ground WC-Co cemented carbides after coating deposition 

    Yang, Jing; Oden, M; Johansson-Jõesaar, M.P.; Esteve Pujol, Joan; Llanes Pitarch, Luis Miguel (2017-03-24)
    Article
    Accés obert
    Manufacturing of hardmetal tools often involves surface grinding, ion etching and final coating. Each stage throughout the manufacturing chain introduces surface integrity changes which may be critical for defining the ...
  • Using concept maps to assess the "oral communication" competence within the "Materials for Energy Applications " course 

    Roa Rovira, Joan Josep; Gallardo Gallardo, Eva; Martínez Martínez, María del Rosario; Llanes Pitarch, Luis Miguel (Sociedad Española de Materiales, 2017)
    Article
    Accés obert
    Technical skills, even for technical positions, are insufficient for subsequent success beyond an entry-level position, since it usually requires proficiency in soft-skills areas such as: communication, leadership, conflict ...

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