Results 41 to 50 of about 560,963 (375)

Tunnel magnetoresistance in alumina, magnesia and composite tunnel barrier magnetic tunnel junctions

, 2010
Using magnetron sputtering, we have prepared Co-Fe-B/tunnel barrier/Co-Fe-B magnetic tunnel junctions with tunnel barriers consisting of alumina, magnesia, and magnesia-alumina bilayer systems. The highest tunnel magnetoresistance ratios we found were 73%
Auge, Alexander, Drewello, Volker, Münzenberg, Markus, Reiss, Günter, Schebaum, Oliver, Schuhmann, Henning, Seibt, Michael, Thomas, Andy   +7 more
core   +1 more source

Synthesis of nano-alumina and their effect on structure, mechanical and thermal properties of geopolymer

Journal of Asian Ceramic Societies, 2019
This paper reports on a study of the effects of nano-alumina on the structural, mechanical and thermal properties of geopolymer matrices. Sample composites were produced by mixing metakaolin, an alkaline solution and nano-alumina (1%, 2% and 3%) with a ...
Z. Zidi, M. Ltifi, Z. Ben Ayadi, L. El Mir   +3 more
semanticscholar   +1 more source

Preparation and Characterization of High-Temperature Thermally Stable Alumina Composite Membrane [PDF]

, 1991
A crack- and pinhole-free composite membrane consisting of an α-alumina support and a modified γ-alumina top layer which is thermally stable up to 1100°C was prepared by the sol–gel method.
Burggraaf, A.J., Lin, Yue-Sheng
core   +3 more sources

Treatment effect on the adsorption capacity of alumina for removal fluoride

Nano Biomedicine and Engineering, 2010
Acid and base treated alumina particles were studied to assess their capacities for the adsorption of fluoride from aqueous solutions. The surface morphology of untreated alumina was analyzed by SEM and its crystal structure was checked by XRD, and was ...
Haixia Wu, Lin Chen, Guo Gao, Yan Zhang, Tingjie Wang, Shouwu Guo   +5 more
doaj   +1 more source

The effect of alumina nanofillers size and shape on mechanical behavior of PMMA matrix composite [PDF]

Journal of the Serbian Chemical Society, 2014
Composites with the addition of alumina nanofillers show improvement in mechanical properties. The PMMA polymer was used as a matrix and two different types of nanofillers, having extremely different shapes were added in the matrix to form the ...
Ben Hasan Somaya Ahmed, Dimitrijević Marija M., Kojović Aleksandar, Stojanović Dušica B., Obradović-Đuričić Kosovka, Jančić-Heinemann Radmila M., Aleksić Radoslav   +6 more
doaj   +1 more source

Understanding the Effect of Resistance Temperature Detector Temperature Controllers on Microstructural Alignment in Magnetic Freeze Casting

Advanced Engineering Materials, EarlyView.
The effect of temperature controllers that are commonly used in freeze‐casting is investigated in this work. Temperature controllers are observed to generate a voltage in the slurry. Microstructural alignment and ultimate compressive strength data show this voltage to interfere with the ability to align the microstructure using magnetic fields ...
Maddie A. Schmitz, Steven E. Naleway
wiley   +1 more source

The Effect of In-Situ Method Parameters in Size and Distribution of Particles for Aluminum Matrix Composites [PDF]

Engineering and Technology Journal, 2016
In this work, an in-situ (oxidation) method was used extensively to reinforce aluminum matrix composites with alumina particles. Multi parameters such as alumina particle size and its distribution were studied in details.
Ahmed Flayyih Hussein
doaj   +1 more source

Exploring Microstructure–Physical Property–Corrosion Response Relationship in Intermetallic Compounds of Al‐Cu Bimetallic Interfaces

Advanced Engineering Materials, EarlyView.
Al‐Cu intermetallic compounds (IMCs) have a significant influence on the properties of Al‐Cu bimetallic interfaces formed in compound casting. This article provides a deeper understanding of microstructure, crystallography, thermal properties, hardness, and corrosion response of Al‐Cu IMCs with the goal of facilitating the optimization of the ...
Alireza Nazarahari, Tatiana Blank, Christian Hinte, Huseyin Can Ozdemir, Khemais Barienti, Christian Klose, Dermican Canadinc, Hans Jürgen Maier   +7 more
wiley   +1 more source

Controlling the size and shape of Mg-MOF-74 crystals to optimise film synthesis on alumina substrates [PDF]

, 2017
Mg-MOF-74 is a metal organic framework with the highest CO2 adsorption capacity of any porous material. Therefore, it has been suggested for CO2 separations as both an adsorbent and incorporated into membranes.
Campbell, James, Tokay, Begum
core   +2 more sources

X‐Ray Tomography Analysis of Damage Mechanisms in Metal Matrix Syntactic Foams During Compression

Advanced Engineering Materials, EarlyView.
In situ synchrotron X‐ray tomography is used to investigate the internal damage mechanisms of AlSi12 metal matrix syntactic foam with ceramic hollow spheres during compressive loading. It is concluded that a homogeneous distribution of the second‐phase filler material results in a sequential collapse in a localized region; this leads to controlled and ...
Indrajeet Tambe, János Endre Maróti, Imre Norbert Orbulov, Zoltan Hegedűs, Markus Ziehmer, Carl E. Krill III, Håkan Hallberg, Pär A. T. Olsson, Johan Hektor   +8 more
wiley   +1 more source