Results 61 to 70 of about 29,057 (291)

Study of the formation of Cu-24at.% Al by reactive milling [PDF]

open access: yes, 2015
In this work, powders of Cu and Al were milled with a proportion equal to 24 atomic % Al, using low and medium energy mills. The initial, intermediate and final stages of the resulting powder are analyzed using scanning electron microscopy, X-ray ...
Esquivel, Marcelo Ricardo Oscar   +4 more
core   +1 more source

Dual‐Atom Dopants Activated Ruthenium Single‐Atom Alloy Boosting Hydrogen Evolution Electrocatalysis in Proton Exchange Membrane Water Electrolyzer

open access: yesAdvanced Functional Materials, EarlyView.
Ni1‐Bi1 dual‐atom dopants are achieved for activating Ru lattices without blocking noble atoms. This model exhibits an ultralow overpotential of 11.4 mV and superb stability at 10 mA cm−2 toward hydrogen evolution reaction, enabling a proton exchange membrane water electrolyzer that needs only 2.233 V to reach 3.0 A cm−2 and operates stably at 1.0 A cm−
Shuiping Luo   +17 more
wiley   +1 more source

Effect of laser power during laser powder bed fusion on microstructure of joining interface between Tungsten and AISI 316L steel

open access: yesAdditive Manufacturing Letters
This study investigates the deposition of tungsten (W) onto a 316L steel substrate by laser powder bed fusion (L-PBF), to optimize process parameters and analyze the interface between W and 316L.
Seung-Hoon Lee   +3 more
doaj   +1 more source

Tuning the Magnetocaloric Properties of the La(Fe,Si)13 Compounds by Chemical Substitution and Light Element Insertion

open access: yesMagnetochemistry, 2021
LaFe13−xSix compounds exhibit a giant magnetocaloric effect and they are considered as a good magnetocaloric working substance for an environmentally friendly cooling technique. Nevertheless as the Curie temperature TC is around 200 K, it is necessary to
Valérie Paul-Boncour, Lotfi Bessais
doaj   +1 more source

Conductive Bonding and System Architectures for High‐Performance Flexible Electronics

open access: yesAdvanced Functional Materials, EarlyView.
This review outlines bonding technologies and structural design strategies that support high‐performance flexible and stretchable electronics. Bonding approaches such as surface‐activated bonding and anisotropic conductive films, together with system‐level architectures including buffer layers and island‐bridge structures, possess distinct mechanical ...
Kazuma Nakajima, Kenjiro Fukuda
wiley   +1 more source

Microstructure and Mechanical Properties of Friction Stir Welded Joints Between Commercially Pure Copper and Al 6351 Alloy

open access: yesArchives of Metallurgy and Materials, 2017
In the present study, the effect of tool rotational speed on microstructure and mechanical properties of friction stir welded joints between commercially pure copper and 6351 Al alloy was carried out in the range of tool rotational speeds of 300-900 rpm ...
Sinha V.C., Kundu S., Chatterjee S.
doaj   +1 more source

Formation energy in \sigma-phase Fe-V alloys

open access: yes, 2012
Formation energy of the \sigma-phase in the Fe-V alloy system, \Delta E, was computed in the full compositional range of its occurrence (34 < x < 60) using the electronic band structure calculations by means of the KKR method.
Cieslak, J., Dubiel, S. M., Tobola, J.
core   +1 more source

Nanolayer‐Encapsulated Stretchable Liquid‐Metal Sheets for Thermal Management

open access: yesAdvanced Functional Materials, EarlyView.
A stretchable liquid metal sheet with both high thermal conductivity and mechanical flexibility is developed. Its trilayer structure, comprising copper‐particle‐dispersed gallium liquid metal encapsulated by styrene‐butadiene‐styrene nanosheets, shows 40.4 W m−1 K−1 conductivity, elongation exceeding 200%, and retention of 96% of its initial ...
Daisuke Kuse   +16 more
wiley   +1 more source

Frontier Advances of Emerging High‐Entropy Anodes in Alkali Metal‐Ion Batteries

open access: yesAdvanced Functional Materials, EarlyView.
Recent advances in microscopic morphology control of high‐entropy anode materials for alkali metal‐ion batteries. Abstract With the growing demand for sustainable energy, portable energy storage systems have become increasingly critical. Among them, the development of rechargeable batteries is primarily driven by breakthroughs in electrode materials ...
Liang Du   +14 more
wiley   +1 more source

Degradation and biocompatibility of Mg-Dy-Zn alloys containing the LPSO and γʹ phases under physiological conditions

open access: yesJournal of Magnesium and Alloys
Previous work indicated that long-period stacking ordered (LPSO) phase and/or γʹ in rare earth containing Mg biomaterials had contradictory mechanisms responsible for their degradation in less complex or standard salt media, such as 0.9 % NaCl solution ...
Genzhi Jiang   +8 more
doaj   +1 more source

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