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Artículo
Microestructura de AI2O3/TZP codopado con Fe2O3 y TiO2 fabricado por reacción (RBAO)
(2003)
Se han fabricado compuestos de 80% vol. Al2 O3/TZP (ZrO2 estabilizada con 2% mol Y2 O3) codopados con 1% vol. Fe2 O3 y 1% vol. TiO2 mediante la tecnología RBAO (“Reaction Bonding of Aluminum Oxide”), que se han sinterizado ...
Artículo
Hyperfine fields and magnetoelastic surface effects in Fe72Cu1.5Nb4Si13.5B9 nanocrystalline alloy
(Institute of Nuclear Chemistry and Technology, 2003)
In this work hyperfine fields of two-phase nanocrystalline Fe72Cu1.5Nb4Si13.5B9 alloys were studied in order to verify the existence of surface effects. To obtain a series of nanocrystalline samples with small grains of ...
Artículo
The order parameter–entropy relation in some universal classes: experimental evidence
(IOP Publishing, 2003)
The asymptotic behaviour near phase transitions can be suitably characterized by the scaling of $\Delta s/Q^2$ with $\epsilon=1-T/T_c$, where $\Delta s$ is the excess entropy and $Q$ is the order parameter. As $\Delta s$ ...
Artículo
Comportamiento plástico a alta temperatura de Al2O3 codopado con CuO y TiO2 fabricado por reacción
(2003)
Se ha estudiado el comportamiento plástico a alta temperatura de alúmina codopada con cantidades equimolares de óxidos de cobre (CuO) y titanio (TiO2) fabricada por reacción mediante el empleo de ensayos de fluencia y de ...
Artículo
Soft magnetic properties of high-temperature nanocrystalline alloys: Permeability and magnetoimpedance.
(AIP Publishing, 2003)
The technological applicability of FeCoNbBCu alloys is suggested in terms of measurements of room temperature magnetoimpedance and temperature dependence of magnetic permeability m r . Results for ...
Artículo
Model of high-temperature plastic deformation of nanocrystalline materials: Application to yttria tetragonal zirconia
(2003)
The possibility of the influence of segregation-induced local electric fields in the bulk diffusion of the species controlling the plastic deformation of nanocrystalline materials has been pointed out. Until now, there is ...
Artículo
Creep of (La0.55Sr0.45)0.99Mn1-yGayO3
(2003)
Steady-state compressive creep was measured in (La0.55Sr0.45)0.99Mn1−yGayO3 at temperatures from 1200 to 1270 °C in air at stresses (σ) from 13 to 40 MPa. The Ga concentration was y = 0, 0.05, and 0.10. Strains to 0.14 ...
Artículo
Universal restrictions to the conversion of heat into work derived from the analysis of the Nernst theorem as a uniform limit
(IOP Publishing, 2003-07-08)
The relationship between the Nernst theorem and the Kelvin-Planck statement of the second law is revisited. We put forward the fact that the exchange of entropy is uniformly vanishing as the temperature goes to zero. The ...
Artículo
Cellular automaton model for the simulation of laser dynamics
(American Physical Society, 2003)
The classical modeling approach for laser study relies on the differential equations. In this paper, a cellular automaton model is proposed as an alternative for the simulation of population dynamics. Even though the model ...