CIEFMA - Centre d'Integritat Estructural i Fiabilitat dels Materials: Recent submissions
Now showing items 1-12 of 285
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Implementation of advanced characterization techniques for assessment of grinding effects on the surface integrity of WC-Co cemented carbides
(2018-02-21)
Article
Restricted access - publisher's policyGrinding is a key step on the manufacturing process of WC–Co cemented carbides (hardmetals). In this work, an investigation of grinding effects on the surface integrity of hardmetals is conducted. It is done by combining ... -
Laser surface texturing of a WC-CoNi cemented carbide grade: surface topography design for honing application
(2018-06)
Article
Open AccessAbrasive effectiveness of composite-like honing stones is related to the intrinsic surface topography resulting from the cubic boron nitride (CBN) grains protruding out of the metallic matrix. Within this framework, Laser ... -
Low temperature degradation of laser patterned 3Y-TZP: enhancement of resistance after thermal treatment
(Elsevier, 2018-04)
Article
Open AccessThe aim of this study is to characterize the resistance to low temperature degradation (LTD) of the surface of dental-grade zirconia (3Y-TZP) patterned with a Nd:YAG laser (532. nm harmonic and pulse duration of 10. ns) ... -
Scale effect in mechanical characterization of WC-Co composites
(2018-04-01)
Article
Restricted access - publisher's policy© 2017 Elsevier LtdThe study of mechanical response of materials at small length scales has gained importance due to the recent advances in micro- and nano-fabrication as well as testing systems. However, most of the ... -
Evaluation of damage in front of starting notches induced by ultra-short pulsed laser ablation for the determination of fracture toughness in zirconia
(Elsevier, 2017-12-01)
Article
Open AccessMachining a very sharp notch on the surface of ceramics for fracture toughness testing has been a critical issue during many years. In this work, we explore a novel method capable of inducing sharp features with negligible ... -
Human primary osteoblast behaviour on microrough zirconia-toughened alumina and on selectively etched microrough zirconia-toughened alumina
(Elsevier, 2018-03-01)
Article
Restricted access - publisher's policyHip arthroplasty cementless acetabular components require excellent mechanical properties, biocompatibility, low friction and good osseointegration with surrounding bone tissue. Zirconia-toughened alumina (ZTA) fulfils ... -
Effect of calcia co-doping on ceria-stabilized zirconia
(Elsevier, 2018-01-01)
Article
Restricted access - publisher's policy© 2018 Elsevier Ltd. Ceria-stabilized zirconia ceramics are characterised by excellent hydrothermal stability and high fracture toughness, but the fracture strength and hardness are lower than that of conventional 3Y-TZP, ... -
Strength and reliability of WC-Co cemented carbides: understanding microstructural effects on the basis of R-curve behavior and fractography
(2018-02)
Article
Open AccessStrength and reliability of WC-Co cemented carbides (hardmetals) are dependent on effective fracture toughness as well as on nature, size and distribution of processing flaws. Regarding toughness, they exhibit a crack ... -
Femtosecond laser multi-patterning of zirconia for screening of cell-surface interactions
(Elsevier, 2018-03)
Article
Restricted access - publisher's policyYttria-stabilised tetragonal zirconia polycrystals (3Y-TZP) bioinert ceramics combine excellent strength and toughness, good aesthetics, high resistance to corrosion and absence of allergic reaction. However, improved ... -
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 ... -
Grinding-induced metallurgical alterations in the binder phase of WC-Co cemented carbides
(2017-12)
Article
Open AccessThe metallic binder phase dictates the toughening behavior of WC-Co cemented carbides (hardmetals), even though it occupies a relative small fraction of the composite. Studies on deformation and phase transformation of the ... -
Influence of temperature on the biaxial strength of cemented carbides with different microstructures
(2018-02)
Article
Open AccessThe effect of the temperature on the mechanical strength of WC-Co cemented carbides with different microstructures (grain size and binder content) was evaluated. Biaxial flexural tests were performed on three cemented ...
