Results 51 to 60 of about 19,047,843 (335)

From synthesis to device: comparative study of Bi2Te3 alloys prepared by direct melt and ball milling for printed thermoelectrics [PDF]

open access: yesEnergy Advances
The synthesis route of thermoelectric (TE) materials strongly influences their microstructure and transport properties. However, few studies compare different synthesis processes of Bi2Te3-based alloys and their impact on the microstructure and ...
Swathi Krishna Subhash   +4 more
doaj   +1 more source

Robust Electrocaloric Performance Enabled by Highly‐Polar Frustrated Nanodomains in NaNbO3‐Based Ferrodistortive Relaxor

open access: yesAdvanced Functional Materials, EarlyView.
P4bm framework in NaNbO3‐Ba(Ti, Hf)O3 ferrodistortive relaxor entails short‐range and highly‐polar ferrodistortive orders. The abundant highly‐polar orders facilitate to increase entropy change, and robust octahedral oxygen tilt enables to impede thermal perturbations.
Feng Li   +11 more
wiley   +1 more source

Characterization of titanium powders processed in n-hexane by high-energy ball milling

open access: yes, 2021
The effect of speed and milling time on the morphology, crystallite size, and phase composition of Ti Cp powders processed in n-hexane by high-energy ball milling (HEBM) using a E-max Retsch equipment was studied by scanning electron microscopy (SEM), X ...
Arango F.   +8 more
core   +1 more source

Preparation of nanocrystalline quartz via high energy ball milling

open access: yesمجلة جامعة الزيتونة, 2021
The preparation of Nanocrystalline powder via high energy ball milling is drawing a considerable attention at the present time for its simplicity and relatively low cost.
Jihan Eldaour
doaj  

Support‐Controlled Reaction Pathways via Dynamic Sulfur‐Mediated Interfaces for Selective Urea Electrolysis

open access: yesAdvanced Functional Materials, EarlyView.
Sulfur‐doped graphitized carbon nanofibers act as adaptive catalyst–support platforms, enabling dynamic sulfur‐mediated reconstruction and strong metal–support interactions. This unique behavior enhances catalyst stability and controls reaction pathways, achieving highly selective urea oxidation (∼92% N2) coupled with efficient hydrogen evolution ...
Melanie Guillén‐Soler   +4 more
wiley   +1 more source

Strong Lead‐Free Bioinspired Piezoceramics for Durable Energy Transducers

open access: yesAdvanced Functional Materials, EarlyView.
We fabricated brick‐and‐mortar lead‐free piezoceramics with Bi0.5Na0.5TiO3 monocrystal platelets as bricks and amorphous silica as mortar. The alignment of the bricks and the presence of the amorphous silica led to anisotropic residual stresses. These residual stresses increase the samples toughness, strength and durability while the brick alignment ...
Ruxue Yang   +12 more
wiley   +1 more source

Structural Modification and Electromagnetic Response of Ball-Milled Nd-Fe-C Alloys

open access: yesMagnetochemistry
With the rapid development of communication technologies, electromagnetic pollution has become increasingly serious, driving the urgent demand for high-performance low-frequency microwave absorbers.
Ziqiang Qiao, Juan Liu, Zhenzhong Wang
doaj   +1 more source

Effect of ZrC Nanopowders on Enhancing the Hydro/Dehydrogenation Kinetics of MgH2 Powders

open access: yesMolecules, 2021
Hydrogen has been receiving great attention as an energy carrier for potential green energy applications. Hydrogen storage is one of the most crucial factors controlling the hydrogen economy and its future applications.
Mohamed Sherif El-Eskandarany   +3 more
doaj   +1 more source

2D Co‐Assembly of Solid Acids Enables Stable Superprotonic Conduction Above 260°C

open access: yesAdvanced Functional Materials, EarlyView.
A two‐dimensional co‐assembly strategy integrates antimony phosphate and phosphotungstic acid nanosheets into free‐standing inorganic lamellar membranes with confined acid–acid interfaces. The resulting interfacial hydrogen‐bond network enables anhydrous proton conductivity exceeding 0.1 S cm−1 at 260°C and supports stable high‐temperature fuel‐cell ...
Qiuning Li   +8 more
wiley   +1 more source

CNTs/Al5083 Composites of High-performance Uniform and Dispersion Fabricated by High-energy Ball-milling

open access: yesCailiao gongcheng, 2017
Carbon nanotubes (CNTs, mass fraction of 0%-2%) reinforced Al5083 composites were fabricated by horizontal high-energy ball milling. The effects of ball milling time and CNTs contents on the properties of composite materials were studied.
GUO Li   +6 more
doaj   +1 more source

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