Results 91 to 100 of about 4,525 (206)

Electrochemical determination of the Gibbs energy of formation of MgAl2O4

open access: yes, 1998
The standard Gibbs energy of formation of the spinel MgAl2O4 from component oxides, MgO and α-Al2O3, has been determined in the temperature range 900 to 1250 K using a solid-state cell incorporating single-crystal CaF2 as the solid electrolyte.
Jayadevan, Kampurath P   +2 more
core   +1 more source

STRUCTURAL AND PHOTOLUMINESCENCE CHARACTERIZATION OF MgAl2O4:Eu PHOSPHOR SYNTHESIZED BY COMBUSTION METHOD.

open access: yes, 2017
The MgAl2O4 spinel doped with Eu2+ ions powder phosphor was prepared at temperature as low as 500 oC using the combustion route. A structural property of the powder was characterized by X-ray diffraction (XRD).
Jain, U. K., Dongre, J. K.
core   +3 more sources

Effect of Rare Earth on Inclusions and Fatigue Properties of 20CrMnTi Gear Steel [PDF]

open access: yesTeshugang
To deeply investigate the effect of rare earth (La/Ce) on inclusions and fatigue properties of 20CrMnTi gear steel, the inclusions in 20CrMnTi and 20CrMnTi-RE gear steel treated with 0.002 7% rare earth were analyzed and characterized by various ...
Wang Li, Liu Chengbao, Li Haoqiu, Wang Yi, Sun Zonghui, Liu Chunwei, Yang Chaoyun, Fu Zhihao
doaj   +1 more source

Combustion Synthesis of NbB2–Spinel MgAl2O4 Composites from MgO-Added Thermite-Based Reactants with Excess Boron

open access: yes, 2020
The formation of NbB2–MgAl2O4 composites from the MgO-added thermite-based reaction systems was investigated by self-propagating high-temperature synthesis (SHS). Two thermite mixtures, Nb2O5/B2O3/Al and Nb2O5/Al, were, respectively, adopted in Reactions
Chun-Liang Yeh, Yin-Chien Chen
core   +1 more source

Crystal structure and chemical bonding of the high-pressure phase of MgAl2O4 from first-principles calculations

open access: yes, 2002
First-principles calcns. using d. functional theory and the pseudopotential method were performed for the crystal structure and phase relation of MgAl2O4 and the binary components (MgO and a-Al2O3). Calcns.
With, de, G.   +2 more
core   +1 more source

An Antenna with Good Electrical Properties and Artistic Shape for Lampshade

open access: yesE3S Web of Conferences, 2018
An improved transparent antenna based on transparent ceramic MgAl2O4 with artistic shape which can be used as lampshade is presented in this paper. A great peak gain and good pattern can be achieved by choosing the property shape and optimizing location ...
Zhou Chang, Yu Yang, Ji Chen
doaj   +1 more source

Raman scattering in hexagonal GaN epitaxial layer grown on MgAl2O4 substrate

open access: yes, 1999
The room temperature Raman spectra of the hexagonal GaN epilayer grown on [111]- oriented MgAl2O4 substrate were measured in various backscattering and right angle scattering geometries.
Zhang W   +5 more
core  

NOVEL SELF-ASSEMBLY OF CRYSTALLINE MgAl2O4 NANOSTRUCTURES PROMOTED BY ANNEALING A GOLD OVERLAYER ON A (111) MgAl2O4 SUBSTRATE [PDF]

open access: yes, 2015
The solid state dewetting characteristics of thin gold films sputtered onto (111) MgAl2O4 substrates were investigated. Prior research done on this system reported discovering the self-assembly of intricately shaped nanostructures, consisting of a ...
Majdi, Tahereh
core   +1 more source

Effect of Eu3+ concentration on the structure and photoluminescence properties of the BaAl2O4/MgAl2O4/BaCO3:x% Eu3+ (0 ≤ x ≤ 1.5) mixed phases synthesized by citrate sol-gel method

open access: yesResults in Materials
We report the structural, morphological and photoluminescence properties of BaAl2O4/MgAl2O4/BaCO3:x% Eu3+ (0 ≤ x ≤ 1.5) mixed phases (hereafter called BMB:x% Eu3+) synthesized by a citrate sol–gel method.
A. Bele   +5 more
doaj   +1 more source

Evolution of MgAl2O4 crystals in Al-Mg-SiO2 composites

open access: yes, 2008
The present study analyzes the morphological transformations of reaction products i.e., MgO, MgAl2O4 occurring during the reaction between SiO2 and Al-Mg alloy in Al-Mg-SiO2 composite processed by the liquid metallurgy technique.
B Pai (13749952)   +3 more
core  

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