Now showing items 1-20 of 98

    • A comparative study of the contact fatigue behavior and associated damage micromechanisms of TiN- and WC:H-coated cold-work tool steel 

      Ramírez Sandoval, Giselle; Jiménez Piqué, Emilio; Mestra Rodríguez, Álvaro Miguel; Vilaseca Vallvé, M. Mercedes; Casellas Padró, Daniel; Llanes Pitarch, Luis Miguel (2015-08-01)
      Article
      Open Access
      In this study the contact fatigue behavior of two coated tool steel is compared. They differ in the chemical nature of the coatings as well as on the deposition route used: a conventional TiN coating prepared by cathodic ...
    • A parametric study of laser interference surface patterning of dental zirconia: Effects of laser parameters on topography and surface quality 

      Roitero, Erica; Lasserre, F.; Anglada Gomila, Marcos Juan; Mücklich, Frank; Jiménez Piqué, Emilio (2017-01)
      Article
      Open Access
      The aim of this work is to generate micrometric linear patterns with different topography on dental grade zirconia by means of UV laser interference and to assess the quality of the produced surface, both in term of the ...
    • Aluminum protection by using green zirconium oxide layer and organic coating: An efficient and adherent dual system 

      Bonamigo Moreira, Vitor; Meneguzzi, Alvaro; Jiménez Piqué, Emilio; Alemán Llansó, Carlos; Armelín Diggroc, Elaine Aparecida (2021-09-01)
      Article
      Open Access
      In this work, the use of ZrO2 nanocoating in aluminum substrates, generated by controlled electrochemical chronoamperometry in hexafluorozirconic acid solutions (H2ZrF6·5H2O), resulted in a lower porous films than that ...
    • Anodic oxidation of titanium for implants and prothesis: processing characterization and potential improvement of osteointegration 

      Anglada Gomila, Marcos Juan; Pavon, Juan José; Galvis, Oscar; Echevarria, F; Castaño, J; Echeverry, M; Robledo, S; Jiménez Piqué, Emilio; Mestra Rodríguez, Álvaro Miguel (2011)
      Conference report
      Open Access
      Among all biomaterials used for bone replacement, it is recognized that both commercially pure titanium (Ti c.p.) and Ti6Al4V alloy are the materials that show the best in vivo performance due to their excellent balance ...
    • Berkovich nanoindentation and deformation mechanisms in a hardmetal binder-like cobalt alloy 

      Roa Rovira, Joan Josep; Jiménez Piqué, Emilio; Tarragó Cifre, Jose María; Zivcec, Maria; Broeckmann, C.; Llanes Pitarch, Luis Miguel (2014-11)
      Article
      Restricted access - publisher's policy
      A cobalt-base solid solution is the most used binder for hardmetals (WC–Co cemented carbides) in a wide range of industrial applications. In the composite material such cobalt alloy is surrounded by hard carbides grains; ...
    • Characterization of interfaces between TiCN and iron-base binders 

      Alvaredo, P; Roa Rovira, Joan Josep; Jiménez Piqué, Emilio; Llanes Pitarch, Luis Miguel; Gordo Odériz, Elena (2017-02-01)
      Article
      Open Access
      This work includes a study of the interface between matrix and reinforcement in Fe-Ti(C,N) systems. A study of wettability and solubility between metal and ceramic phases is first performed. It combines wetting experiments ...
    • Chemical and mechanical properties of anodized cp-titanium in NH4 H2PO4/NH4F media for biomedical applications 

      Aloia Games, Lucas; Gomez Sanchez, Andrea; Jiménez Piqué, Emilio; Schreiner, Wido H.; Ceré, Silvia M.; Ballarre, Josefina (2012-07-15)
      Article
      Restricted access - publisher's policy
      Potentiostatic anodizing of commercially pure titanium, using ammonium phosphate and ammonium fluoride solution as electrolyte is studied. The objective is to generate titanium oxides on the surface and phosphor compounds ...
    • Compositionally-tailored steel-based materials manufactured by electron beam melting using blended pre-alloyed powders 

      Koptyug, Andrey; Popov Jr., Vladimir V.; Botero Vega, Carlos Alberto; Jiménez Piqué, Emilio (2020-01-13)
      Article
      Restricted access - publisher's policy
      The paper presents the prospects of additive manufacturing (AM) in metal, using the powder bed fusion (PBF) method Electron Beam Melting (EBM) in fabrication specific steel-based alloys for different applications. The ...
    • Contact damage and fracture micromechanism of multilayered TiN/CrN coatings at micro- and nano-length scales 

      Roa Rovira, Joan Josep; Jiménez Piqué, Emilio; Martínez, R; Ramírez Sandoval, Giselle; Tarragó, Josep Maria; Rodríguez, R; Llanes Pitarch, Luis Miguel (2014)
      Article
      Restricted access - publisher's policy
      In this study, systematic nanomechanical andmicromechanical studies have been conducted in threemultilayer TiN/CrN systems with different bilayer periods (8, 19 and 25 nm). Additionally, experimental work has been ...
    • Contact Damage and Residual Strength in Cemented Carbides 

      Goez, Alexey; Reig, Blanca; Nordenström, Henrik; Tarres, Elena; Jiménez Piqué, Emilio; Llanes Pitarch, Luis Miguel (2009)
      Conference report
      Restricted access - publisher's policy
    • Contact damage in artificially aged 3Y-TZP 

      Armas Sancho, Zamir de; Jiménez Piqué, Emilio; Mestra Rodríguez, Álvaro Miguel; Anglada Gomila, Marcos Juan (2010)
      Article
      Restricted access - publisher's policy
      The behaviour of hydrothermal degraded 3 % molar yttria stabilised zirconia under monotonic spherical indentation has been studied. The investigation is focused mainly on analysing the response under spherical indentation ...
    • Contact damage in artificially aged 3Y-TZP 

      Armas Sancho, Zamir de; Mestra Rodríguez, Álvaro Miguel; Jiménez Piqué, Emilio; Anglada Gomila, Marcos Juan (2010)
      Article
      Open Access
      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 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
      Restricted access - publisher's policy
      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 damage of monolayer and bilayer ceramic coatings deposited on cemented carbides 

      Mateo García, Antonio Manuel; Llanes Pitarch, Luis Miguel; Jiménez Piqué, Emilio (2012)
      Article
      Open Access
      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)
      Conference report
      Open Access
      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
      Open Access
      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
      Restricted access - publisher's policy
      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)
      Conference report
      Open Access
      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
      Restricted access - publisher's policy
      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
      Open Access
      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) ...