Results 51 to 60 of about 20,982 (319)

Enhancing Strength and Electrical Conductivity in Al–Zr–Sc Conductor Alloys Through Sn and Sr Microalloying and Two‐Step Aging Treatment

Advanced Engineering Materials, EarlyView.
Trace additions of Sn and Sr combined with a two‐step aging treatment are shown to enhance the microstructure and performance of Al–Zr–Sc conductor alloys. Strength and electrical conductivity increase concurrently through accelerated precipitation of fine Al3(Sc, Zr) precipitates and improved dislocation resistance, offering a cost‐effective pathway ...
Quan Shao, Emad M. Elgallad, Alexandre Maltais, X.‐Grant Chen   +3 more
wiley   +1 more source

Facile Synthesis of N-Doped Graphene-Like Carbon Nanoflakes as Efficient and Stable Electrocatalysts for the Oxygen Reduction Reaction

Nano-Micro Letters, 2017
A series of N-doped carbon materials (NCs) were synthesized by using biomass citric acid and dicyandiamide as renewable raw materials via a facile one-step pyrolysis method.
Daguo Gu, Yao Zhou, Ruguang Ma, Fangfang Wang, Qian Liu, Jiacheng Wang   +5 more
doaj   +1 more source

Colossal Nernst power factor in topological semimetal NbSb2

Nature Communications, 2022
Today solid-state cooling technologies below 77 K are greatly limited. Here, the authors report the colossal Nernst power factor in NbSb2 single crystal, providing a high performance thermomagnetic material for solid-state cooling at low temperature.
Peng Li, Pengfei Qiu, Qing Xu, Jun Luo, Yifei Xiong, Jie Xiao, Niraj Aryal, Qiang Li, Lidong Chen, Xun Shi   +9 more
doaj   +1 more source

Macro and Microstructural Engineering of Piezoelectric Ceramics

Ferroelectrics, 2013
Dimension, shape and materials’ properties are the most basic characteristics of a piezoelectric ceramic transducer determining the device performance. In our studies better electromechanical performance was obtained from piezoelectric ceramic itself by creating designs based on built-in amplification mechanisms obtained through the shape and geometry ...
Alkoy, Sedat, Mensur-Alkoy, Ebru, Berksoy-Yavuz, Ayse, Dursun, Sinan, Olukkent, Recep, Ozeren, Yagiz   +5 more
openaire   +3 more sources

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

Advanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios, Anthony Gonzalez, Aleksander Aleman, Tyler Dolmetsch, Tanaji Paul, Arvind Agarwal   +5 more
wiley   +1 more source

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source

Near‐Field Electrospinning Micro‐Printhead Achieves Precise Control of Nanofiber Deposition

Advanced Engineering Materials, EarlyView.
A micro‐printhead for near‐field electrospinning enables reproducible deposition of polymer nanofibers with diameters below 50 nm. Systematic parameter studies uncover the mechanisms linking operating conditions to fiber morphology, paving the way for precise and low‐cost nanoscale 3D manufacturing.As a high‐resolution, cost‐effective, and rapid ...
Han Xu, Dario Mager, Jan G. Korvink
wiley   +1 more source

Exploiting a high-performance magnesium-fluoride battery prototype enabled by anion-receptor-mediated electrolyte

Nature Communications
Rechargeable magnesium batteries have emerged as a competitive next-generation energy storage technology owing to their abundant resources and inherent safety. The development of Mg batteries, especially regarding specific energy, has been compromised by
Keyi Chen, Meng Lei, Tengfei Wang, Guyue Li, Chilin Li   +4 more
doaj   +1 more source

Effects of whisker surface modification on microstructures, mechanical and thermal properties of β-Si3N4 whiskers reinforced Al matrix composites

Materials & Design, 2018
In order to modify the interfacial bonding of β-Si3N4 whiskers (β-Si3N4w) reinforced Al matrix composites, the Ag-coated β-Si3N4w with varying Ag contents were incorporated into the Al matrix by a hot pressing method.
Chenxu Zhang, Dongxu Yao, Jinwei Yin, Kaihui Zuo, Yongfeng Xia, Hanqin Liang, Yu-Ping Zeng   +6 more
doaj   +1 more source

Combined Process‐ and Phase‐Field‐Simulation to Predict the Microstructure of Single‐Crystal Ni‐Based Superalloys

Advanced Engineering Materials, EarlyView.
A combined finite element and phase‐field approach predicts the evolution of microstructure during the directional solidification of Ni‐based superalloys. The model reveals how withdrawal rate, temperature gradient, and wall thickness control the dendrite spacing, highlighting the strong effect of surface regions in thin sections where dendrite growth ...
Sean Böhm, André B. Baldissera, Rainer Völkl, Uwe Glatzel   +3 more
wiley   +1 more source