Results 41 to 50 of about 17,299 (256)

LabEx RESSOURCES21, strategic metals of the XXIst century

, 2023
LabEx RESSOURCES21 is a research projects funded in 2011 by the Agence National de la Recherche (ANR) with several Integrated project on Lithium, on Nickel, on Rare Earth Elements, Environment and Mining -special focus on French Guiana And more Education and ...
Chagnes, Alexandre, Cathelineau, Michel, Villiéras, Frédéric, Chernoburova, Olga, Abildtrup, Isabelle   +4 more
openaire   +1 more source

Laser Powder Bed Fusion of Alumina: Effects of Scanning Strategies on External and Internal Defects

Advanced Engineering Materials, EarlyView.
This study investigates how scanning strategies affect pure alumina in laser powder bed fusion. Linear 45° scanning yields uniform surfaces but high porosity, while the island‐concentric strategy provides higher density with through‐holes favorable for infiltration. Findings highlight pathways toward optimizing defect‐free alumina parts.
Mohamed Abdelmoula, Gökhan Küçüktürk, Duran Kaya, David Grossin, Christophe Tenailleau, Benjamin Duployer, Enrique Juste, Fabrice Petit   +7 more
wiley   +1 more source

Low‐Cost, Large‐Scale Nanoporous Metals by Mechanical Alloying, Oxide Reduction, and Dealloying of Powders

Advanced Engineering Materials, EarlyView.
Powder metal processing provides scalable advantages in nanoporous (np) metal development. Mechanical alloying is used to produce unique precursors for hybrid nanopore formation by oxide reduction and dealloying. As demonstrated in np Ag, this approach improves process efficiency while promoting smaller ligaments and larger pores, both of which are ...
Mark A. Atwater, Oliver A. Fowler
wiley   +1 more source

Strategic role of rare-earth metals in the knowledge-based economy [PDF]

, 2014
W artykule omawiana jest kwestia wykorzystania metali ziem rzadkich w różnych nowatorskich zastosowaniach i związane z tym strategiczne znaczenie tych pierwiastków dla dalszego rozwoju gospodarki opartej na wiedzy (GOW).
Burchard-Dziubińska, Małgorzata
core  

Planar Solid‐State Nanopores Toward Scalable Nanofluidic Integration Based on CMOS Technology

Advanced Engineering Materials, EarlyView.
We present a scalable silicon‐based fabrication strategy for planar solid‐state nanopores to enable their integration with complex nanofluidic systems. Prototype devices demonstrate normal voltage‐current characteristics, good noise performance, and appreciable streaming currents. Our CMOS‐compatible fabrication process offers precise geometric control
Ngan Hoang Pham, Chenyu Wen, Mohammad Hadi Khaksaran, Won‐Yong Lee, Javier Cruz, Klas Hjort, Dongping Wu, Shi‐Li Zhang   +7 more
wiley   +1 more source

Utilization of waste materials for extraction of strategic metals : a biogeochemical approach

, 2017
Worldwide the modern society produces vast amounts of waste materials containing strategic and valuable metals. Some of them are of substantial economic or environmental significance if controlled recovery of metals can be performed or if uncontrolled ...
Allard, Bert,, Karlsson, Stefan,, Ekberg, Christian,, Bäckström, Mattias,, Sjöberg, Viktor,   +4 more
core  

Critical metals and minerals of Kazakhstan and other central Asian countries: institutional barriers and strategic export policy

Relevance. Central Asia holds vast reserves of critical metals and minerals such as lithium, nickel, aluminum, copper, uranium, and rare earth elements, offering strong potential for integration into global value chains.
Zhanbozova, Aksaule B., Kopbossynova, Alua N., Duisen, Galymzhan M., Panzabekova, Aksana Zh.   +3 more
core   +1 more source

Bacteria immobilisation on hydroxyapatite surface for heavy metals removal

, 2013
Selected bacterial strains were immobilised on the surface of hydroxyapatite (Ca-10(PO4)(6)(OH)(2) - HAp) of natural origin (fish bones). The capacity of the material, alone and in combination with the bacterial strains to act as heavy metal removers ...
Castro, P. M. L., Pintado, M. E., Piccirillo, C., Pullar, R. C., Pereira, S. I. A., Marques, A. P. G. C., Tobaldi, D. M.   +6 more
core   +1 more source

On the Lightweight Potential of Laser Additive Manufactured NiTi Triply Periodic Minimal Sheet Lattices

Advanced Engineering Materials, EarlyView.
This study explores the lightweight potential of laser additive‐manufactured NiTi triply periodic minimal surface sheet lattices. It systematically investigates the effects of relative density and unit cell size on surface quality, deformation recovery, compression behavior, and energy absorption.
Haoming Mo, Shuo Qu, Shiming Gao, Xu Song   +3 more
wiley   +1 more source

Characterization of Aluminized Layers on Inconel‐738 Alloy: Microstructure, Modeling of Aluminizing Kinetics, and Thermal Behavior

Advanced Engineering Materials, EarlyView.
This study explored how effective nickel aluminide coatings are obtained in providing oxidation resistance applied to the Inconel 738 alloy, modeling with diffusion models. In the present study, kinetics and thermal behavior of the Inconel 738 alloy were studied by the low‐temperature thermoreactive aluminizing process, which was carried out at 625°C ...
Gozde Celebi Efe, Tuba Yener, Suayb Cagri Yener, Mourad Keddam, Cuma Bindal   +4 more
wiley   +1 more source