Exploració per autor "Jiménez Piqué, Emilio"
Ara es mostren els items 52-71 de 142
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Fatigue susceptibility under contact loading of hardmetals coated with ceramic films
Llanes Pitarch, Luis Miguel; Tarrés, E.; Ramírez, Giselle; Botero Vega, Carlos Alberto; Jiménez Piqué, Emilio (2010-04)
Article
Accés restringit per política de l'editorialThe contact fatigue behavior of a fine-grained hardmetal coated with two distinct ceramic films, either a TiN monolayer or a WC/C multilayer, is studied by means of indentation testing techniques. Spherical indentation ... -
FIB/FESEM experimental and analytical assessment of R-curve behavior of WC-Co cemented carbides
Tarragó Cifre, Jose María; Jiménez Piqué, Emilio; Schneider, Ludwig; Casellas Padró, Daniel; Torres, Y.; Llanes Pitarch, Luis Miguel (2015-10-01)
Article
Accés obertExceptional fracture toughness levels exhibited by WC-Co cemented carbides (hardmetals) are due mainly to toughening derived from plastic stretching of crack-bridging ductile enclaves. This takes place due to the development ... -
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 obertThe 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 ... -
Focused ion beam tomography of zirconia degraded under hydrothermal conditions
Jiménez Piqué, Emilio; Ramos, A.; Muñoz Tabares, José Alejandro; Hatton, A.; Soldera, Flavio; Mucklich, F.; Anglada Gomila, Marcos Juan (Elsevier, 2012-08)
Article
Accés restringit per política de l'editorialThree-dimensional tomography was performed on hydrothermal degraded zirconia by sequential focussed ion beam (FIB) sectioning and field emission scanning electron microscopy (FE-SEM) observation. By means of image analysis ... -
Formulation and screen printing of conductive silver inks onto zirconia ceramics for strain monitoring
Zhang, J.; Ahmadi, M.; Serra Fanals, Marc; Jiménez Piqué, Emilio; Llanes Pitarch, Luis Miguel; Fargas Ribas, Gemma (Universitat Politècnica de Catalunya, 2022-06-16)
Comunicació de congrés
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Fractura por contacto en recubrimientos feldespáticos sobre circona dental
Rueda Arango, Astrid Oasis; Anglada Gomila, Marcos Juan; Jiménez Piqué, Emilio (2011)
Text en actes de congrés
Accés restringit per política de l'editorialLas restauraciones dentales de circona con recubrimientos feldespáticos se están empleando de manera creciente en aplicaciones dentales debido a su estabilidad química, buena respuesta mecánica y apariencia externa. Sin ... -
Fracture and fatigue behavior of cement carbides:3D focused ion beam tomography of crack-microstructure interactions
Tarragó Cifre, Jose María; Jiménez Piqué, Emilio; Turón Viñas, Miquel; Rivero, Lorenzo; Al-Dawery, Ihsan; Schneider, Ludwig; Llanes Pitarch, Luis Miguel (2014-09-01)
Article
Accés obertThe fracture and fatigue phenomena in WC-cobalt cemented carbides (hard-metals) have been subjects extensively investigated in the last 30 years. From these studies, it is well established that the metallic binder phase ... -
Fracture mechanics analysis of hardmetals by using artificial small-scale flaws machined at the surface through short-pulse laser ablation
Ortiz Membrado, Laia; Cabezas i Peñalva, Laura; Jiménez Piqué, Emilio; Llanes Pitarch, Luis Miguel (2023-02)
Article
Accés obertLaser ablation has become an innovative treatment for cemented carbides, regarding edge rounding and surface modification, aiming to improve their tribomechanical performance. Meanwhile, the precision offered for this ... -
Fracture micromechanisms and mechanical behavior of YBCO bulk superconductors at 77 and 300 K
Konstantopoulou, K; Roa Rovira, Joan Josep; Jiménez Piqué, Emilio; Segarra Rubi, Merce; Pastor, J. Y. (2014-09-01)
Article
Accés restringit per política de l'editorialIn this study two YBa2Cu3O7-delta bulk superconductors were evaluated, with the aim of analyzing the influence of the processing method (TSMG and Bridgman) and the test temperature on their mechanical behavior. The ... -
Functionally graded ultra-high temperature ceramics: From thermo-elastic numerical analysis to damage tolerant composites
Silvestroni, Laura; Pavan, Diego; Melandri, Cesare; Sciti, Diletta; Gilli, Nicola; Ortiz Membrado, Laia; Jiménez Piqué, Emilio; Mattia Grande, Antonio (Elsevier, 2022-12-01)
Article
Accés obertTo maximize the toughening contributions due to fiber bridging and residual stresses upon layering, ultra-high temperature ceramics containing variable amounts of short carbon fiber in functionally graded stacking sequences ... -
Geometry of nanoindentation cube-corner cracks observed by FIB tomography: Implication for fracture resistance estimation
Cuadrado Lafoz, Nuria; Seuba, J.; Casellas Padró, Daniel; Anglada, M.; Jiménez Piqué, Emilio (Elsevier, 2015-09-01)
Article
Accés obertWhen indenting a brittle material with a sharp indenter, cracks can be generated at the corners of the imprint. From the length of these cracks, the fracture resistance can be estimated. This technique is simple and allows ... -
Green nanocoatings based on the deposition of zirconium oxide: the role of the substrate
Bonamigo Moreira, Vitor; Puiggalí Jou, Anna; Jiménez Piqué, Emilio; Armelín Diggroc, Elaine Aparecida; Alemán Llansó, Carlos; Meneguzzi, Alvaro (Multidisciplinary Digital Publishing Institute (MDPI), 2021-02-23)
Article
Accés obertHerein, the influence of the substrate in the formation of zirconium oxide monolayer, from an aqueous hexafluorozirconic acid solution, by chemical conversion and by electro-assisted deposition, has been approached. The ... -
Growth and thermal stability of TiN/ZrAlN: Effect of internal interfaces
Yalamanchili, Kumar; Wang, Fei; Aboulfadl, Hisham; Barrirero, Jenifer; Rogstrom, Lina; Jiménez Piqué, Emilio; Mücklich, F.; Tasnadi, Ferenc; Odén, Magnus; Ghafoor, N (2016-12-01)
Article
Accés obertWear resistant hard films comprised of cubic transition metal nitride (c-TMN) and metastable c-AlN with coherent interfaces have a confined operating envelope governed by the limited thermal stability of metastable phases. ... -
Hall-Petch strengthening of the constrained metallic binder in WC-Co cemented carbides: Experimental assessment by means of massive nanoindentation and statistical analysis
Roa Rovira, Joan Josep; Jiménez Piqué, Emilio; Salla Tarragó, José María; Mateo García, Antonio Manuel; Sandoval, Daniela A.; Fair, Jonathan; Llanes Pitarch, Luis Miguel (2016-10-31)
Article
Accés obertWC–Co cemented carbides are geometrically complex composites constituted for two interpenetrating networks of the constitutive ceramic and metal phases. Accordingly, assessment of microstructural effects on the local ... -
High hardness, low Young's modulus and low friction of nanocrystalline ZrW2 Laves phase and Zr1-xWx thin films
Horwat, David; Jiménez Piqué, Emilio; Pierson, J.F.; Migot, A.; Dehmas, M.; Anglada Gomila, Marcos Juan (2012-04)
Article
Accés restringit per política de l'editorialZr1−xWx nanocrystalline films of Zr-W solid solutions and ZrW2 Laves phase were synthesized by magnetron co-sputtering. Large values of the H/E ratio up to 0.09 are observed for grain sizes in the nanometer range along ... -
High hardness, low youngs modulus and low friction of nanocrystalline ZrW 2 laves phase and Zr 1-xW x thin films
Horwat, David; Jiménez Piqué, Emilio; Pierson, J.F.; Migot, S.; Dehmas, M.; Anglada Gomila, Marcos Juan (2012)
Article
Accés restringit per política de l'editorialZr1−xWx nanocrystalline films of Zr-W solid solutions and ZrW2 Laves phase were synthesized by magnetron co-sputtering. Large values of the H/E ratio up to 0.09 are observed for grain sizes in the nanometer range along ... -
High temperature mechanical properties of a multilayer Y-TZP processed by superplastic flow
Dominguez Rodriguez, Arturo; Jiménez Piqué, Emilio; Jiménez Melendo, Manuel (1998-06)
Article
Accés obertThe increasing applications of advanced materials in different areas including the fields of aerospace, energy, electronics, optics, biology, etc. . . often require not only tailored properties but also complex shapes ... -
Hydrogen-rich gas production by steam reforming and oxidative steam reforming of methanol over La0.6Sr0.4CoO3-d: effects of preparation, operation conditions, and Redox cycl
Morales Comas, Miguel; Laguna Bercero, Miguel Ángel; Jiménez Piqué, Emilio (American Chemical Society (ACS), 2023-07-25)
Article
Accés obertLa0.6Sr0.4CoO3-d (LSC) perovskite, as a potential catalyst precursor for hydrogen (H2)-rich production by steam reforming of methanol (SRM) and oxidative steam reforming of methanol (OSRM), was investigated. For this ... -
Improved adhesion of cathodic arc PVD AlCrSiN coating on ion-implanted WC-Co substrates
Ortiz Membrado, Laia; García González, Sandra; Òrrit Prat, Jordi; Bonet, Raul; Caro, Jaume; Fernández de Ara, Jonathan; Almandoz Sanchez, Eluxka; Llanes Pitarch, Luis Miguel; Jiménez Piqué, Emilio (Elsevier, 2023-06-01)
Article
Accés obertIon implantation has been shown to improve adhesion strength of AlCrSiN coatings due to a synergic enhancement on fracture toughness and load bearing capability of the substrate that can potentially increase the in-service ... -
Influence of carbide grain size on the corrosion behaviour of WC-Co cemented carbides: electrochemical measurements, residual strenght and 3D FIB/FESEM characterization of induced damage
Fargas Ribas, Gemma; Jiménez Piqué, Emilio; Llanes Pitarch, Luis Miguel (2016)
Text en actes de congrés
Accés restringit per política de l'editorialThe exposure of cemented carbides to corrosive environments is generally associated with a reduction of the performance and life - time of tools and components. The aim of this investigation is to evaluate the effects of ...