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Ara es mostren els items 21-40 de 142

    • Contact damage in artificially aged 3Y-TZP 

      Armas Sancho, Zamir de; Mestra Rodríguez, Álvaro Miguel; Jiménez Piqué, Emilio; Anglada Gomila, Marcos Juan (2010)
      Article
      Accés obert
      Tetragonal zirconia polycrystals doped with 3% mol of yttria (3Y - TZP) are increasingly employed as implants in the human body, because they are biocompatible and have relatively high strength and fracture toughness. ...

    • Contact damage induced by means of conical indentation in hardmetals: Microstructural effects on residual strength 

      Fooladimahani, Saghar; Liu, Chao; Sousa Machado, Pedro Vinicius; Lin, L.L.; Wen, Xin; Jiménez Piqué, Emilio; Llanes Pitarch, Luis Miguel (Elsevier, 2024-01)
      Article
      Accés obert
      Aiming to evaluate the influence of microstructure on residual strength of hardmetals, conical indentation is implemented and validated as a simple and practical methodology to introduce controlled damage. Work is carried ...

    • Contact damage investigation of CVD carbonitride hard coatings deposited on cemented carbides 

      El Azhari, Idriss; García, José; Soldera, Flavio; Suárez, Sebastian; Jiménez Piqué, Emilio; Mücklich, Frank T.; Llanes Pitarch, Luis Miguel (2020-01-01)
      Article
      Accés obert
      The evolution of damage induced as contact load is increased has been investigated on single- and multilayered coated cemented carbides by means of spherical indentation. The main objective of the study was to assess the ...

    • Contact fatigue behaviour of CVD coated cemented carbides in dry and wet conditions 

      Collado Ciprés, Verónica; Dalibon Bähler, Eugenia Laura; Escalada, Lisandro; Roa Rovira, Joan Josep; Jiménez Piqué, Emilio; Soldera, Flavio; Brühl, Sonia P.; Simison, Sílvia Noemí; Llanes Pitarch, Luis Miguel; Sosa, Amadeo Daniel (2022-03-15)
      Article
      Accés obert
      Cycling contact fatigue indentation tests in dry and wet conditions were conducted in cemented carbides CVD-coated with Ti(C,N)/a-Al2O3 and Zr(C,N)/a-Al2O3 systems. In dry contact experiments, all imprints presented a ...

    • Contact fatigue damage of monolayer and bilayer ceramic coatings deposited on cemented carbides 

      Mateo García, Antonio Manuel; Llanes Pitarch, Luis Miguel; Jiménez Piqué, Emilio (2012)
      Article
      Accés obert
      En este trabajo se estudia el comportamiento a fatiga bajo solicitaciones de contacto de un carburo cementado WC-Co recubierto con dos películas cerámicas distintas: TiN y WC/C, ya sea como monocapas o bicapas, mediante ...

    • Contact fatigue damage of monolayer and bilayer ceramic coatings depposited on cemented carbides 

      Mateo García, Antonio Manuel; Llanes Pitarch, Luis Miguel; Jiménez Piqué, Emilio (2012)
      Text en actes de congrés
      Accés obert
      En este trabajo se estudia el comportamiento a fatiga bajo solicitaciones de contacto de un carburo cementado WC-Co recubierto con dos películas cerámicas distintas: TiN y WC/C, ya sea como monocapas o bicapas, mediante ...

    • Contact fatigue of veneer feldspathic porcelain on dental zirconia 

      Rueda Arango, Astrid Oasis; Anglada, M.; Jiménez Piqué, Emilio (2015-03-01)
      Article
      Accés obert
      Objectives. To understand the resistance to cyclic and static contact loading of feldspathic porcelain on dental zirconia (3Y-TZP), in order to understand the partial failure of porcelain (chipping or cracking).; Methods. ...

    • Corrosion damage in WC-Co cemented carbides: residual strength assessment and 3D FIB-FESEM tomography characterisation 

      Tarragó Cifre, Jose María; Fargas Ribas, Gemma; Jiménez Piqué, Emilio; Felip, Alba; Isern, Lluis; Coureaux Mustelier, David; Roa Rovira, Joan Josep; Al-Dawery, Ihsan; Fair, Jonathan; Llanes Pitarch, Luis Miguel (2014-12-01)
      Article
      Accés restringit per política de l'editorial
      The effect of corrosion damage on cemented carbides was investigated. The study included residual strength assessment and detailed fractographic inspection of corroded specimens as well as detailed 3D FIB-FESEM tomography ...

    • Corrosion damage in WC-Co cemented carbides: Residual strength assessment and 3D FIB-FESEM tomography characterization 

      Tarragó Cifre, Jose María; Fargas Ribas, Gemma; Jiménez Piqué, Emilio; Felip, Alba; Isern, Lluis; Coureaux Mustelier, David; Al-Dawery, Ihsan; Roa Rovira, Joan Josep; Fair, Jonathan; Llanes Pitarch, Luis Miguel (2014)
      Text en actes de congrés
      Accés obert
      The effect of corrosion damage on cemented carbides was investigated. The study included residual strength assessment and detailed fractographic inspection of corroded specimens as well as detailed 3D FIB-FESEM tomography ...

    • Corrosion induced degradation of textured YBCO under operation in high humidity conditions 

      Roa Rovira, Joan Josep; Jiménez Piqué, Emilio; Díaz, Jordi A.; Morales, Manuel; Calleja Lázaro, Albert; Segarra, M. (2012-05-25)
      Article
      Accés restringit per política de l'editorial
      The early stages of aggressive degradation at 85% of humidity for 24 h of single crystals of YBa2Cu3O7 − δ textured by Bridgman technique have been analyzed by means of atomic force microscopy, X-ray photoelectron spectroscopy, ...

    • Corrosion protection of carbon steel by silica-based hybrid coatings containing cerium salts: Effect of silica nanoparticle content 

      Santana, Ianina; Pepe, Andrés; Jiménez Piqué, Emilio; Pellice, Sergio; Milosev, Ingrid; Ceré, Silvia M. (2015-03-15)
      Article
      Accés obert
      One strategy for minimising corrosive attack on carbon steel involves the application of hybrid coatings rich in rare earths, on the basis of their low toxicity and environmental sustainability. Tetraethoxysilane (TEOS) ...

    • Criterios de diseño micromecánico, a nivel de sustrato y bajo solicitaciones de contacto, en herramientas recubiertas para aplicaciones de conformado de aleaciones metálicas 

      Mateo García, Antonio Manuel; Llanes Pitarch, Luis Miguel; Jiménez Piqué, Emilio; Anglada Gomila, Marcos Juan (2012)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      En aplicaciones de conformado en frío, donde el uso de herramientas recubiertas es común, solicitaciones mecánicas de contacto inducen presiones de tipo Hertziano que pueden causar fallos por fatiga. En este trabajo, ...

    • Critical influence of the processing route on the mechanical properties of zirconia composites with graphene nanoplatelets 

      Gallardo Lopez, Angela; Muñoz Ferreiro, Carmen; López Pernía, Cristina; Jiménez Piqué, Emilio; Gutiérrez Mora, Felipe; Morales Rodriguez, Ana; Poyato, Rosalía (Multidisciplinary Digital Publishing Institute (MDPI), 2020-12-29)
      Article
      Accés obert
      Graphene-based nanostructures, used as potential reinforcement in ceramic composites, have a great tendency to agglomerate. This requires the use of homogenization techniques during the powder processing, posing the need ...

    • Daño por contacto en materiales compuestos alúmina/mullita bajo solicitaciones estáticas y cíclicas 

      Botero Vega, Carlos Alberto; Burgos, O.; Jiménez Piqué, Emilio; Moreno, R.; Baudín, Carmen; Llanes Pitarch, Luis Miguel (2010)
      Text en actes de congrés
      Accés obert
      En el presente trabajo se estudia la resistencia frente al daño por contacto de materiales compuestos de alúmina/mullita fabricados mediante el proceso de sintetización reactiva.

    • Deformation mechanism induced under high cycle fatigue test in a metaestable austenitic stainless steel 

      Roa Rovira, Joan Josep; Fargas Ribas, Gemma; Jiménez Piqué, Emilio; Mateo García, Antonio Manuel (2014)
      Article
      Accés restringit per política de l'editorial
      Advanced techniques were used to study the deformation mechanisms induced by fatigue tests in a metastable austenitic stainless steel AISI 301LN. Observations by Atomic Force Microscopy were carried out to study the evolution ...

    • Deformation mechanisms induced under high cycle fatigue tests in a metastable austenitic stainless steel 

      Roa Rovira, Joan Josep; Fargas Ribas, Gemma; Jiménez Piqué, Emilio; Mateo García, Antonio Manuel (2014)
      Article
      Accés restringit per política de l'editorial
      Advanced techniques were used to study the deformation mechanisms induced by fatigue tests in a metastable austenitic stainless steel AISI 301LN. Observations by Atomic Force Microscopy were carried out to study the evolution ...

    • Deformation of polycrystalline TRIP stainless steel micropillars 

      Roa Rovira, Joan Josep; Wheeler, J.M.; Trifonov, T.; Fargas Ribas, Gemma; Mateo García, Antonio Manuel; Michler, J; Jiménez Piqué, Emilio (2015)
      Article
      Accés obert
      The deformation mechanisms of the metastable austenite phase of a transformation induced plasticity (TRIP) stainless steel, AISI 301LN, have been investigated by compression of multicrystalline micropillars of different ...

    • Dependence of nanoindentation hardness with crystallographic orientation of austenite grains in metastable stainless steels 

      Roa Rovira, Joan Josep; Fargas Ribas, Gemma; Mateo García, Antonio Manuel; Jiménez Piqué, Emilio (2015-10-01)
      Article
      Accés restringit per política de l'editorial
      The mechanical behaviour of a metastable austenitic stainless steel has been studied by means of nanoindentation of individual grains. Hardness, elastic modulus and estimation of wear resistance were determined as a function ...

    • Determinación de propiedades de interés estructural de materiales de titanato de circonio 

      López López, Emilio; Botero Vega, Carlos Alberto; Jiménez Piqué, Emilio; Llanes Pitarch, Luis Miguel; Moreno, Rodrigo; Baudín, Carmen (2009)
      Article
      Accés restringit per política de l'editorial
      El titanato de circonio presenta anisotropía cristalográfica en su coeficiente de expansión térmica, lo que hace que tenga un alto interés como componente de materiales con bajo coeficiente de expansión. Por tanto, los ...

    • Direct-methane anode-supported solid oxide fuel cells fabricated by aqueous gel-casting 

      Morales Comas, Miguel; Laguna Bercero, Miguel Ángel; Jiménez Piqué, Emilio (Elsevier, 2022-06)
      Article
      Accés restringit per política de l'editorial
      Direct methane Solid Oxide Fuel Cells (SOFCs) operated under catalytic partial oxidation (CPOX) conditions are investigated, focusing on the processing of the anode support and the anode deactivation caused by carbon ...