Results 61 to 70 of about 19,047,843 (335)

Engineering Local Polar Frustration in Lead‐Free Dielectric Ceramics for Ultrahigh Normalized Energy Storage Performance

Advanced Functional Materials, EarlyView.
Local polar frustration is engineered to stabilize an ergodic relaxer through nanoscale multiphase coexistence, suppressing long‐range ferroelectric order while preserving high polarization. This strategy delivers ultrahigh low‐field normalized energy density (Wa >0.020 mC cm−2), exceptional thermal stability, and a transferable design principle for ...
Hareem Zubairi, Muhammad Wasim, Songhao Fu, Xiaojiao Liu, Annette K Kleppe, Zhilun Lu, Antonio Feteira, Diming Xu, Joseph C.A. Prentice, Ge Wang   +9 more
wiley   +1 more source

Metal cutting modelling SPH approach [PDF]

, 2011
The purpose of this work is to evaluate the use of the smoothed particle hydrodynamics (SPH) method within the framework of high speed cutting modelling. First, a 2D SPH based model is carried out using the LS-DYNA® software.
J. Limido, Salaün, Michel, J.L. Lacome, R. Chieragatti, Lacome, Jean-Luc, M. Salaun, Chieragatti, Rémy, Mabru, Catherine, C. Espinosa, Espinosa, Christine, Limido, Jérôme, C. Mabru   +11 more
core   +1 more source

Phase Transformation of Silicon and Silica During Ball Milling

Journal of Advanced Materials in Engineering, 2010
In the present study phase transformation of silicon and silica during milling in different atmospheres was investigated. The silicon powder was subjected to high energy ball milling in ammonia (25%) atmosphere.
M. Babashahi, M.H.Enayati, M. Salehi, A. Monshi   +3 more
doaj  

Investigation of dehydrogenation performance and air stability of MgH2–PMMA nanostructured composite prepared by direct high-energy ball-milling

Materials for Renewable and Sustainable Energy, 2020
Mechanical milling and a gas-selective polymer were used to protect MgH2 from oxidation and improve its dehydrogenation properties. MgH2 and poly(methyl methacrylate) (PMMA) were simultaneously ball-milled for 5 and 20 h, respectively, to prepare an air ...
Mahsa Rafatnejad, S. Raygan, Mohammad Sefidmooy Azar   +2 more
semanticscholar   +1 more source

CO2‐to‐CO Conversion in a Gas‐Fed, Zero‐Gap, PEM Electrolyzer Enabled by Polycations and Nitrogen‐Doped Carbon‐Supported Cobalt Nanoparticles

Advanced Functional Materials, EarlyView.
A gas‐fed, zero‐gap, PEM CO2 electrolyzer is realized by incorporating PDDA+ ions onto the carbonaceous Co/N‐C electrocatalyst, with gaseous H2 and CO2 fed into the anode and cathode, respectively. Operating without an aqueous electrolyte, the system sustains a peak FECO of 65.1% at 100 mA cm−2. ABSTRACT Electrochemical carbon dioxide reduction (ECO2R)
Yuen Leong Chow, Hsi‐Wen Wu, Aimin Li, Yalou Guo, Duhong Chen, Jie Zhang, Paul A. Webley   +6 more
wiley   +1 more source

Effect of HPGR on platinum bearing ores and the flotation response as compared to the conventional ball mill [PDF]

, 2011
Includes abstract.Includes bibliographical references.This thesis focuses on the application of the high pressure grinding rolls (HPGR) on platinum bearing ores Merensky, UG2 and Platreef.
Solomon, Nomonde
core   +1 more source

Enhancing strength and ductility synergy through heterogeneous structure design in nanoscale Al2O3 particulate reinforced Al composites

Materials & Design, 2019
Nanoparticle reinforced aluminum matrix composites fabricated by a high energy ball milling method showed significantly improved strength, however, their ductility was relative lower.
Y.N. Zan, Y.T. Zhou, Z.Y. Liu, G.N. Ma, D. Wang, Q.Z. Wang, W.G. Wang, B.L. Xiao, Z.Y. Ma   +8 more
doaj   +1 more source

Modelling of High Energy Impacted Ball Milling and Ball Motion by Finite Element Analysis

, 2016
SPEX (R) 8000 Mixer/Mill is a high-energy ball mill which is used mostly for laboratory scale processes. This study deals with an investigation on reactor and ball velocities of SPEX (R) 8000 Mixer/Mill by finite element method for different shaft frequencies.
AKTAŞ, Ali Rıza, AKTAŞ, Gülsün, GÜRÜ, Metin   +2 more
openaire   +4 more sources

Magnetic properties and crystal structure of elemental cobalt powder modified by high-energy ball milling

Journal of Materials Research and Technology, 2019
Elemental cobalt powder was modified by high-energy ball milling for 0–15 h, and the results obtained by X-ray diffraction (XRD) revealed a phase transformation.
J. A. Betancourt-Cantera, F. S. Jesús, A. Bolarín-Miró, G. Torres-Villaseñor, L. G. Betancourt-Cantera   +4 more
semanticscholar   +1 more source

Spatially Regulated Silicon Clusters in Trimodal Composite Anodes for High‐Energy Lithium‐Ion Batteries

Advanced Functional Materials, EarlyView.
A trimodal anode architecture spatially regulates silicon clusters within confined interstitial environments formed by graphite and contorted hexabenzocoronene. This confinement suppresses silicon aggregation and localized stress while enabling efficient Li‐ion transport, achieving high‐capacity, stable lithium‐ion batteries.
Jeongmi Joo, Minsung Kang, Seung Hak Oh, Jee Ho Ha, Hyunji Cha, Jimin Han, Ji‐Su Lim, Dae Hyeon Kwon, Won‐Jin Kwak, Sang Kyu Kwak, Seokhoon Ahn, Seok Ju Kang   +11 more
wiley   +1 more source