Results 71 to 80 of about 3,718 (215)

MgAl2O4 형광체의 광학적 특성에 관한 연구 [PDF]

open access: yes, 2013
학위논문 (박사)-- 서울대학교 대학원 : 재료공학부, 2013. 2. 강신후.MgAl2O4 spinel은 흥미로운 전기적, 기계적, 자성적, 광학적 특성 때문에 여러 분야의 적용을 위해 연구되어 왔다. 더욱이 MgAl2O4 spinel은 광 소자를 위한 모체로도 널리 알려져 있다. 본 연구에서는 티타늄을 MgAl2O4 모체에 도핑하여 단결정 성장으로부터 얻은 청색 발광과는 달리 티타늄 도핑으로부터 백색 발광을 얻었다.
임재혁
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Investigation of Thermo‐Chemical Processes in Commercial MgO‐C Refractory Bricks With and Without MgO‐C Recyclate at Elevated Temperatures

open access: yesAdvanced Engineering Materials, Volume 28, Issue 10, 20 May 2026.
This study investigates thermo‐chemical processes during high‐temperature testing of two commercial MgO‐C brick grades, one containing 47.5 wt.% MgO‐C recyclate. Using ETV, DTA/TG‐MS, XRD, and SEM/EDS/EBSD, mechanisms such as carbothermal reduction of magnesia, impurity incorporation into the secondary MgO surface layer, and calcium‐rich phase ...
Alexander Schramm   +6 more
wiley   +1 more source

Material removal and deformation mechanism in multiple nanoscratches of single crystal MgAl2O4

open access: yesMaterials & Design
Single crystal MgAl2O4 requires ultra-precision machining to achieve dimensional accuracy and surface quality due to its high hardness and brittleness. To investigate the effect of multi-abrasive scratch sequences on the material removal and deformation ...
Jun Zhao   +6 more
doaj   +1 more source

Effect of Mg-Al insertion on magnetotransport properties in epitaxial Fe/sputter-deposited MgAl2O4/Fe(001) magnetic tunnel junctions

open access: yesAIP Advances, 2017
We investigated the effect of an Mg-Al layer insertion at the bottom interface of epitaxial Fe/MgAl2O4/Fe(001) magnetic tunnel junctions (MTJs) on their spin-dependent transport properties.
Mohamed Belmoubarik   +4 more
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

Interaction of MgO Recyclate‐Based Cermet Anode With KF‐AlF3‐Al2O3 at 800°C During Laboratory Scale Aluminum Molten Salt Electrolysis

open access: yesAdvanced Engineering Materials, Volume 28, Issue 10, 20 May 2026.
A carbon‐free, as‐sintered MgO–steel cermet anode, fabricated via cold isostatic pressing using MgO–C refractory recyclate, was evaluated under laboratory‐scale K‐cryolite electrolysis at 800°C. Operation at this reduced temperature, combined with the electrolyte's limited electrical conductivity, led to an increase in cell voltage.
Farhan Hossain   +7 more
wiley   +1 more source

Structural and magnetic anisotropy in the epitaxial FeV2O4 (110) spinel thin films

open access: yesAIP Advances, 2015
The epitaxial 200-nm-thick FeV2O4(110) films on (110)-oriented SrTiO3, LaAlO3 and MgAl2O4 substrates were fabricated for the first time by pulsed laser deposition, and the structural, magnetic, and magnetoresistance anisotropy were investigated ...
Xiaolan Shi   +5 more
doaj   +1 more source

Active and Stable MgAl2O4 and Ni(SA)/MgAl2O4 Catalysts for the Reverse Water Gas Shift Reaction

open access: yes, 2021
Reverse water gas shift reaction (RWGS) is an important process which plays a vital role in many CO2 utilization related reactions. Noble metals are the most active catalysts in RWGS, but the high price and low reserve strangled their applications.
Lingling Zhang   +8 more
openaire   +1 more source

Interaction of Ladle Slag With Varying SiO2 Content and Recyclate‐Based MgO–C Refractories

open access: yesAdvanced Engineering Materials, Volume 28, Issue 10, 20 May 2026.
Ladle slags (CaO/Al2O3 = 1) with 1–20 wt% SiO2 were investigated in contact with industrial MgO–C refractories fabricated from fresh magnesia and 50 wt% recyclate. The sessile drop method at 1600°C reveals intensive gas formation, delayed slag infiltration in recyclate‐based samples, and, under high‐SiO2 slag, formation of a dense MgAl2O4‐rich ...
Anton Yehorov   +6 more
wiley   +1 more source

The deposition of coke from methane on a Ni/MgAl2O4 catalyst

open access: yes, 2007
Temperature-programmed reaction techniques and Raman spectroscopy were used to characterize coke species deposited on a 5% Ni/MgAl2O4 catalyst for dry reforming of methane.
Guo JJ, Lou H, Zheng XM
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