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Ara es mostren els items 24-43 de 177

    • 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 damage resistance of TiN-coated hardmetals: Beneficial effects associated with substrate grinding 

      Yang, Jing; García Marro, Fernando; Todorov Trifonov, Trifon; Odén, Magnus; Johansson Joesaar, M.P; Llanes Pitarch, Luis Miguel (2015-08-15)
      Article
      Accés obert
      Contact loading is a common service condition for coated hardmetal tools and components. Substrate grinding represents a key step within the manufacturing chain of these coated systems. Within this context, the influence ...

    • Contact fatigue behavior of a-Al2O3-Ti(C,N) CVD coated WC-Co under dry and wet conditions 

      Sosa, Amadeo Daniel; Collado Ciprés, Verónica; García, José; Escalada, Lisandro; Roa Rovira, Joan Josep; Soldera, Flavio; Brühl, Elisabeth; Llanes Pitarch, Luis Miguel; Simison, Sílvia Noemí (2021-02-01)
      Article
      Accés obert
      The response to cycling contact fatigue load of a WC-6%Co carbide coated with a Ti(C,N)/a-Al2O3 CVD multilayer was investigated in dry and wet conditions. Imprints in dry conditions were characterized by small thin cracks ...

    • Contact Fatigue Behavior of PVD-Coated Steel 

      Ramírez, Giselle; Tarres, Elena; Casas Aguirregomezcorta, Begoña; Valls, Isaac; Martínez Martínez, María del Rosario; Llanes Pitarch, Luis Miguel (2009)
      Article
      Accés restringit per política de l'editorial
      In this study, the contact fatigue behavior of a PVD TiN coating deposited onto DIN 1.2379 coldwork tool steel is assessed by cyclic spherical indentation. Experimental characterization focuses on the evaluation of ...

    • 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 behaviour of tin film deposited onto cold-work tool steels 

      Ramírez, Giselle; Casas Aguirregomezcorta, Begoña; Valls, Isaac; Martinez, Rosario; Bueno, Rebeca; Llanes Pitarch, Luis Miguel (2009)
      Text en actes de congrés
      Accés restringit per política de l'editorial

    • 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 WC-6%wtCo cemented carbides: Influence of corrosion-induced changes on emergence and evolution of damage 

      Fargas Ribas, Gemma; Lavigne, Olivier; Llanes Pitarch, Luis Miguel (2022-02)
      Article
      Accés obert
      The effect of corrosion-induced changes on the contact fatigue response and associated damage in a medium-grained WC-6%wtCo hardmetal grade is investigated. Cyclic contact loading tests are conducted by means of Hertzian ...

    • 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 effects on hertzian contact fatigue behavior of a WC-Co cemented carbide 

      Fargas Ribas, Gemma; Llanes Pitarch, Luis Miguel (2021)
      Text en actes de congrés
      Accés obert
      The effect of corrosion on the damage induced under cyclic contact loading for a medium-grained WC-6%wtCo hardmetal grade is investigated. Contact fatigue tests are conducted by means of Hertzian indentation techniques. ...

    • Corrosion evaluation of austenitic and duplex stainless steels in molten carbonate salts at 600 °C for thermal energy storage 

      Morales Comas, Miguel; Cabezas Peñalva, Laura; Castro Alloca, Manuel; Fargas Ribas, Gemma; Llanes Pitarch, Luis Miguel; Mateo García, Antonio Manuel (Multidisciplinary Digital Publishing Institute (MDPI), 2022-12-19)
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      Accés obert
      Next-generation concentrated solar power (CSP) plants are required to operate at temperatures as high as possible to reach a better energy efficiency. This means significant challenges for the construction materials in ...

    • Corrosion-induced changes on Hertzian contact damage in cemented carbides 

      Zheng, Yafeng; Fargas Ribas, Gemma; Lavigne, Olivier; Roitero, Erica; Llanes Pitarch, Luis Miguel (2020-11-01)
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      Accés obert
      In this study, the influence of corrosion on the mechanical response and damage induced under Hertzian indentation is assessed for three cemented carbides with metallic binders of different chemical nature. Corrosion ...

    • Corrosion-induced damage and residual strength of WC-Co,Ni cemented carbides: influence of microstructure and corrosion medium 

      Zheng, Yafeng; Fargas Ribas, Gemma; Armelín Diggroc, Elaine Aparecida; Lavigne, Olivier; Llanes Pitarch, Luis Miguel (Multidisciplinary Digital Publishing Institute (MDPI), 2019-09-19)
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      Accés obert
      The corrosion behavior of cemented carbides with binders of different chemical nature (Co and Ni) and carbides with distinct mean grain size (ultrafine and coarse) was studied. The investigation also included corrosion ...

    • 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 assessment of two-dimensional methods for the microstructural characterization of cemented carbides 

      Fang, Shiqi; Salán Ballesteros, Maria Núria; Pauly, Christoph; Llanes Pitarch, Luis Miguel; Mücklich, Frank T. (Multidisciplinary Digital Publishing Institute (MDPI), 2022-11-03)
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      Accés obert
      Cemented carbides, or hard metals, are ceramic–metal composites usually consisting of tungsten carbide particles bound by a cobalt-based alloy. They are the backbone materials for the tooling industry, as a direct consequence ...

    • 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.

    • Design of alternative binders for hard materials 

      Nicolás, M. de; Besharatloo, Hossein; Alvaredo Olmos, Paula; Roa Rovira, Joan Josep; Llanes Pitarch, Luis Miguel; Gordo Odériz, Elena (2020-02-01)
      Article
      Accés obert
      In the last years, a special interest has emerged towards the total or partial substitution of traditional cemented carbides composing elements. In this study, a systematic methodology is presented and used to design ...