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Mostrando ítems 151-160 de 633
Artículo
High-temperature plastic behavior of TZP-Ni cermets
(Wiley-Blackwell, 2008-02)
The creep behavior of tetragonal zirconia TZP-Ni cermets with metal contents below, close to, and above the percolation limit has been studied. Compressive creep tests were performed on as-received materials and samples ...
Artículo
Microstructure and Magnetic Properties of Mo Containing Nanoperm-Type Alloys
(Russian Academy of Sciences, 2008)
The influence of composition changes on the devitrification process, microstructure and magnetic properties of (Fe,Co)MoB(Cu) alloys was investigated. Amorphous and nanocrystalline samples were studied by differential ...
Artículo
Non-Isothermal approach to isokinetic crystallization processes: application to the nanocrystallization of HITPERM alloys
(Elsevier, 2005)
A new approach is proposed for the study of crystallization processes under the hypothesis of isokinetic behavior. From a direct extension of the Avrami theory to non-isothermal regimes, an expression of the local Avrami ...
Artículo
Enhancing the electrical conductivity of in-situ reduced graphene oxide-zirconia composites through the control of the processing routine
(Elsevier, 2021)
Graphene oxide (GO) was mixed with 3 mol% yttria tetragonal zirconia polycrystal (3YTZP) using two powder processing routines: a colloidal method in an aqueous solution and a combination of ultrasonication with high-energy ...
Artículo
Comment on: Refractive and keratometric outcomes of supervised novice surgeon performed limbal relaxing incisions
(Wolters Kluwer Health, 2021)
Artículo
Influence of isochronal annealing on the microstructure and magnetic properties of Cu-free HITPERM Fe40.5Co40.5Nb7B12 alloy
(AIP Publishing, 2012-06-07)
Systematic study of the effect of isochronal annealing on the structure and magnetic properties of Cu-free HITPERM alloy (Fe40.5Co40.5Nb7B12) is described herein. Mo¨ssbauer spectroscopy (MS) and anomalous x-ray diffraction ...
Artículo
Elusive super-hard B6C accessible through the laser-floating zone method
(Nature, 2019)
Boron carbide is among the most promising ceramic materials nowadays: their mechanical properties are outstanding, and they open potential critical applications in near future. Since sinterability is the most critical ...
Artículo
Could the percent tissue altered (PTA) index be considered as a unique factor in ectasia risk assessment?
(Springer Nature, 2020-12)
Purpose: To evaluate the efficacy, safety, predictability and stability of the percent tissue altered (PTA) formula in post-LASIK (laser-assisted in situ keratomileusis) ectasia risk assessment. Methods: One hundred and ...
Artículo
Electrical conduction mechanisms in graphene nanoplatelet/yttria tetragonal zirconia composites
(Elsevier, 2018-08)
Yttria tetragonal zirconia polycrystalline (3YTZP) ceramic composites with 5, 10 and 20 vol% graphene nanoplatelets (GNPs) were prepared by spark plasma sintering (SPS) and their electrical conductivity as a function ...
Artículo
Mechanical alloying of Fe100−x−yNbxBy (x = 5, 10; y = 10, 15): from pure powder mixture to amorphous phase
(Elsevier, 2008)
The mechanical alloying process of Fe75Nb10B15 and Fe85Nb5B10 systems has been studied from an initial mixture of elemental powders. The amorphization process is monitored by X-ray diffraction and Mössbauer spectrometry. ...