Now showing items 49-60 of 217

    • 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
      Restricted access - publisher's policy
      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
      Open Access
      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
      Restricted access - publisher's policy
      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
      Restricted access - publisher's policy
      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
      Open Access
      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; Odén, Magnus (Elsevier, 2017-09-15)
      Article
      Open Access
      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
      Open Access
      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
      Open Access
      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
      Open Access
      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
      Open Access
      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
      Open Access
      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
      Open Access
      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 ...