Results 31 to 40 of about 8,806 (212)

Influence of Heat Treatment Temperature on Crevice and Pitting Corrosion of UNS S32205 Duplex Stainless Steel

open access: yessteel research international, EarlyView.
Heat treatments that alter the proportions of austenite and ferrite phases or induce the precipitation of phases such as sigma in duplex stainless steel UNS S32205 make it more susceptible to pitting and crevice corrosion. However, the effects of these treatments are not always evident when analyzed using the cyclic polarization technique.
Alba Regina Turin   +8 more
wiley   +1 more source

Synergistic Effects of Entropy Tuning in Niobium‐Based Oxide Anode for Fast‐Charging Lithium‐Ion Batteries

open access: yesAdvanced Functional Materials, Volume 36, Issue 5, 15 January 2026.
An entropy‐tuned niobium‐based oxide (ETNO) anode for fast‐charging lithium‐ion batteries are presented, engineered via multi‐cation doping. The synergistic effects of entropy tuning result in excellent rate capability and long‐term durability under ultrafast charging conditions.
Yoojin Ahn   +6 more
wiley   +1 more source

Algunas observaciones sobre la sinterización del acero austenítico 316L en atmósfera de argón

open access: yesRevista de Metalurgia, 1998
La utilización de acero inoxidable pulvimetalúrgico está limitada, entre otras razones, por la presencia de porosidad que pueda favorecer procesos corrosivos, así como a posibles pérdidas de cromo en la matriz durante los procesos de sinterización.
F. Gómez   +2 more
doaj   +1 more source

Understanding the Role of Nb Doping in Modulating Ionic Diffusion Kinetics and Particle Size in Spinel LiMn2O4

open access: yesBattery Energy, Volume 5, Issue 1, January 2026.
Niobium (Nb) incorporation into spinel LiMn2O4 achieves simultaneous enhancement of ionic diffusion kinetics and particle size. After Nb doping, the overall surface energy decreases, promoting particle growth. Despite the increased particle size, the introduction of niobium significantly improves the rate capability and effectively mitigates ...
Junda Li   +13 more
wiley   +1 more source

Aleaciones de Al-Cr-Zr para aplicaciones a altas temperaturas

open access: yesRevista de Metalurgia, 1998
Se ha revisado la bibliografía existente sobre las aleaciones Al-Cr-Zr para alta temperatura. Además de una breve reseña del desarrollo histórico y una descripción de los fundamentos de estas aleaciones de aluminio-metal de transición, se comentan los ...
T. Gerique   +3 more
doaj   +1 more source

Niobium‐Based Surface Engineering Enables High Rate and Cycling Stability of High‐Voltage LiNi0.5Mn1.5O4 Cathode

open access: yesChemElectroChem, Volume 13, Issue 2, January 2026.
A scalable sol–gel‐assisted strategy is developed to construct a uniform niobium‐based surface coating on high‐voltage LiNi0.5Mn1.5O4 (LNMO) cathodes. The conformal Nb‐rich layer acts as a chemically robust and ionically conductive interphase that suppresses electrolyte oxidation, mitigates Ni/Mn dissolution, and stabilizes the cathode‐electrolyte ...
Jiaqi Ke   +6 more
wiley   +1 more source

Polvos de Al-Al3Ti obtenidos mediante aleado mecánico y tratamiento térmico

open access: yesRevista de Metalurgia, 2005
Polvos mezclados de aluminio y titanio (10 % en peso) han sido aleados mecánicamente en un molino Attritor, obteniéndose una solución metaestable de titanio en la matriz de aluminio.
F. G. Cuevas   +3 more
doaj   +1 more source

Freeze‐cast porous alumina tubes for membrane applications: Role of niobium pentoxide in microstructure and gas transport properties

open access: yesJournal of the American Ceramic Society, Volume 109, Issue 1, January 2026.
Freeze‐cast alumina tubes doped with Nb2O5 exhibit aligned and hierarchical porosity, enabling high gas permeance. Nb2O5 promotes liquid‐phase sintering and formation of the AlNbO4 secondary phase, enhancing mechanical strength. The resulting porous supports are suitable for membrane‐based gas separation applications.
Priscila Cristh Fonseca Alves   +5 more
wiley   +1 more source

Perfeccionamiento metodológico de la asignatura Metalurgia General II

open access: yesCiencia & Futuro, 2011
En el trabajo se describe el diseño curricular de la asignatura Metalurgia General II perteneciente a la disciplina Tecnologías Metalúrgicas, de la Carrera Ingeniería en Metalurgia y Materiales, del segundo año.
Henry Rodríguez-García
doaj  

Caracterización de la metalurgia inicial gallega: una revisión

open access: yesTrabajos de Prehistoria, 1995
Ninguno de los varios intentos previos de establecer un marco cronológico para las primeras piezas metálicas gallegas ha resultado totalmente satisfactorio.
Beatriz Comendador Rey
doaj   +1 more source

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