Browsing by Author "Roa Rovira, Joan Josep"
Now showing items 1-20 of 187
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3D FIB/FESEM tomography of grinding-induced damage in WC-Co cemented carbides
(Elsevier, 2020)
Article
Open AccessWC-Co cemented carbides (hardmetals) represent the backbone materials for the tooling industry. In order to achieve particular tool geometries, diamond wheel grinding is a well-established method for machining hardmetals. ... -
A review of doped lanthanum gallates as electrolytes for intermediate temperature solid oxides fuel cells: From materials processing to electrical and thermo-mechanical properties
(Elsevier, 2016)
Article
Open AccessThe present review is focused on SrO- and MgO-doped lanthanum gallates (LSGMs), specifically in those key aspects related to their implementation as electrolyte for Intermediate Temperature Solid Oxide Fuel Cells. After a ... -
A review of surface topographical modification strategies of 3Y-TZP: Effect in the physicochemical properties, microstructure, mechanical reliability, and biological response
(Elsevier, 2023-07-01)
Article
Open AccessThe development of zirconia dental implants has become increasingly popular over the last years due to the outstanding mechanical properties, superior aesthetic appearance and high biocompatibility of this material. However, ... -
AFM as an alternative for Young's modulus determination in ceramic materials at elastic deformation regime
(2011-09-08)
Article
Restricted access - publisher's policyA novel alternative to the conventional nanoindentation technique for hard materials is presented. An atomic force microscopy probe is used as an indenter, applying loads in the nN range and producing elastic deformations ... -
Análise de Transiçao Resistiva e da irreversibilidade magnètica no superconductor YBACUO texturizado
(2012)
Conference report
Open AccessOs supercondutores de alta temperatura crítica, em especial os granulares, apresentam uma transição resistiva que ocorre em duas etapas: a uma temperatura acima da temperatura crítica de transição Tc0, chamada de ... -
Anisotropy effect of bioinspired ceramic/ceramic composites: Can the platelet orientation enhance the mechanical properties at micro- and submicrometric length scale?
(Elsevier, 2021-04-01)
Article
Open AccessIn advanced ceramics, improving toughness usually relies on the introduction of a soft metallic or polymeric ductile phase, which decreases the mechanical properties. Some natural materials are strong, stiff and tough due ... -
Annealing aged zirconia: study of surface mechanical properties at the micrometric length scale
(Elsevier, 2015-03-01)
Article
Open AccessThe 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- ... -
Anode-supported SOFC Operated Under Single-chamber Conditions at Intermediate Temperatures
(2011-02-02)
Article
Restricted access - publisher's policyAnode-supported SOFC was fabricated using gadolinia doped ceria (GDC) as the electrolyte (15 lm of thickness), Ni-GDC as the anode and La0.5Sr0.5CoO3 – d-GDC as the cathode. Catalytic activities of the electrodes and ... -
Assessment of corrosion-induced changes on the mechanical integrity of cemented carbides at small length scales
(2019-11-01)
Article
Open AccessIn this work, the effect of corrosion-induced damage on the mechanical response of hardmetals was evaluated at small length-scale by means of nanoindentation and nanoscratch techniques. Damage was introduced in a controlled ... -
Assessment of mechanical properties at microstructural length scale of Ti(C,N)–FeNi ceramic-metal composites by means of massive nanoindentation and statistical analysis
(2019-01-01)
Article
Open AccessIt is well known the interest of the scientific community in substituting the traditional cemented carbides (WC–Co) by alternative ceramic-metal systems. In this regard, Ti(C,N)-based cermets arise as excellent candidates ... -
Berkovich nanoindentation and deformation mechanisms in a hardmetal binder-like cobalt alloy
(2014-11)
Article
Restricted access - publisher's policyA 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; ... -
Caracterización mecánica a escala picométrica de YBa1.75Sr0.25Cu3O7-d monocristalino mediante la técnica de autoflujo
(Universidad de Cantabria, 2009)
Conference lecture
Open AccessSe implementa un método para indentar superficies rígidas a niveles nanométricos utilizando un microscopio de fuerzas atómicas (Atomic Force Microscopy-AFM), empleando el modo de espectroscopia de fuerzas (Force ... -
Carbon addition effects on microstructure and small-scale hardness for Ti(C,N)-FeNi cermets
(2019-12-01)
Article
Open AccessThe current study investigates the influence of carbon addition on the microstructural and micromechanical properties of Ti(C,N)-FeNi cermets with different ceramic/metal phase ratios. Evaluation of small-scale hardness ... -
Cemented carbide end-mill edge preparation using dry-electropolishing
(Multidisciplinary Digital Publishing Institute (MDPI), 2024-02-03)
Article
Open AccessPrecision edge preparation techniques for cemented carbides enable optimization of the geometry of tools’ cutting edges. These techniques are frequently used in high-stress environments, resulting in substantial improvements ... -
Characterization of interfaces between TiCN and iron-base binders
(2017-02-01)
Article
Open AccessThis 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 ... -
Characterization study of an oxide film layer produced under CO2/steam atmospheres on two different maraging steel grades
(Multidisciplinary Digital Publishing Institute (MDPI), 2021-05-01)
Article
Open AccessCurrently, surface treatments lead to inducing a superficial layer of several nanometers up to micrometer, which in some cases can be protective. In this experimental work, an oxide layer was generated under different ... -
Chemical and nanoindentation study of diffusion during sintering of 12Ce-ZrO2/3Y-ZrO2 powder layers
(2018-02-01)
Article
Restricted access - publisher's policyTetragonal zirconia polycrystals doped with 3% mol of yttria (3Y-ZrO2) exhibit excellent mechanical properties and biocompatibility. However, under humid environments, their surface structural integrity is degraded by aging ... -
Chemical introduced disorder effects on the critical current density and pinning mechanisms of YBa2-XSrXCu3O7-¿
(2016)
Article
Open AccessWe report on isotherm ( T = 77.5 K) DC magnetization hysteresis loops of a series of YBa 2 -x Sr x Cu 3 O 7 - ¿ (x = 0, 0.02, 0.1, 0.25 and 0.37) single crystals with the purpose of studying the influence of chemically ... -
Chemical milling effect on the low cycle fatigue properties of cast Ti-6Al-2Sn-4Zr-2Mo alloy
(2016-11-01)
Article
Open AccessThe 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 ... -
Chemical segregation in a 12Ce-ZrO2/3Y-ZrO2 ceramic composite
(2017-10-01)
Article
Restricted access - publisher's policyIn 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, ...
