Results 81 to 90 of about 547,292 (342)

Effect of CeO2 and MgO promoters on the performance of a Ni/Al2O3 catalyst in the steam reforming of biomass pyrolysis volatiles

, 2020
A Ni/Al2O3 catalyst has been modified incorporating CeO2 and MgO promoters in order to improve its performance in the steam reforming of biomass pyrolysis volatiles.
L. Santamaria, M. Artetxe, G. Lopez, M. Cortazar, M. Amutio, J. Bilbao, M. Olazar   +6 more
semanticscholar   +1 more source

Characterization of a Recyclate‐Based MgO‐Steel Composite As‐Sintered Inert Anode Candidate After Exposure to Cryolite Electrolysis

Advanced Engineering Materials, EarlyView.
Carbon‐free inert anodes are essential for decarbonizing aluminum electrolysis. This study investigates a recyclate‐based MgO‐316L steel composite anode tested under galvanostatic Hall–Héroult conditions in cryolite at 1000°C. Microstructural analysis reveals selective MgO fluorination, spinel and oxide layer formation, electrolyte infiltration, and ...
Serhii Yaroshevskyi, Alexander Adamczyk, Nora Brachhold, Gert Schmidt, Jana Hubálková, R. Gumeniuk, Alexandros Charitos, Christos G. Aneziris   +7 more
wiley   +1 more source

Temperature dependent dynamic and static magnetic response in magnetic tunnel junctions with Permalloy layers

, 2008
Ferromagnetic resonance and static magnetic properties of CoFe/Al2O3/CoFe/Py and CoFe/Al2O3/CoFeB/Py magnetic tunnel junctions and of 25nm thick single-layer Permalloy(Py) films have been studied as a function of temperature down to 2K.
Aliev, F. G., Garcia-Hernandez, M., Metlushko, V., Pryadun, V. V., Russek, S. E., Sierra, J. F., Snoeck, E.   +6 more
core   +1 more source

Síntese e caracterização do compósito Al2O3 -YAG e do Al2O3-YAG e Al2O3 aditivados com Nb2O5 Synthesis and characterization of Al2O3 -YAG composite and Al2O3-YAG and Al2O3 with Nb2O5 additives

Cerâmica, 2012
O compósito Al2O3-YAG possui alta resistência à corrosão e à fluência em ambientes agressivos, o que permite vislumbrar aplicações bastante atrativas, tais como aletas de motores a jato e de turbinas a gás. Este compósito também apresenta elevada dureza e alta resistência à abrasão possibilitando o seu emprego em blindagens balísticas.
R. F. Cabral, L. H. L. Louro, M. H. Prado da Silva, J. B. Campos, E. S. Lima   +4 more
openaire   +2 more sources

Population of Nonmetallic Inclusions in Liquid High‐Silicon Electrical Steel in Contact With MgO–C Refractories Based on Recyclates and Environmentally Friendly Binders

Advanced Engineering Materials, EarlyView.
The formation of nonmetallic inclusions (NMIs) was investigated in this study, carrying out immersion tests for 30 min at a temperature of 1600°C with liquid high‐silicon electrical steel (Si ≈ 3 mass‐%) and different MgO–C refractories. Conventional MgO–C refractories were considered, as well as MgO–C refractories containing MgO–C recyclate and ...
Lukas Neubert, Matheus Roberto Bellé, Florian Kerber, Dinesh Kumar Gunasekar, Hans‐Jörn Weddige, Christos G. Aneziris, Olena Volkova   +6 more
wiley   +1 more source

Metallic liquid hydrogen and likely Al2O3 metallic glass

, 2011
Dynamic compression has been used to synthesize liquid metallic hydrogen at 140 GPa (1.4 million bar) and experimental data and theory predict Al2O3 might be a metallic glass at ~300 GPa.
D.E. Hare, D.G. Hicks, F. Hensel, G.I. Kanel, K. Umemoto, L.V. Altshuler, M. Bastea, P.A. Urtiew, R. Chau, R.F. Trunin, S. Ono, S.T. Weir, S.T. Weir, T. Mashimo, T.T. Chen, V.E. Fortov, W. J. Nellis, W.J. Nellis, W.J. Nellis, W.J. Nellis, W.J. Nellis, W.J. Nellis, W.J. Nellis, W.J. Nellis, Y. Wang   +24 more
core   +1 more source

On the predominant mechanisms active during the high power diode laser modification of the wettability characteristics of an SiO2/Al2O3-based ceramic material [PDF]

, 2002
The mechanisms responsible for modifications to the wettability characteristics of a SiO2/Al2O3-based ceramic material in terms of a test liquid set comprising of human blood, human blood plasma, glycerol and 4-octonol after high power diode laser (HPDL)
Bahners T., Bourell D. L., Heitz J., Henari F., J. Lawrence, Li J. G., Neumann A. W., Song Q., Song Q., Song Q., Watanabe H., Zhou X. B., Zhou X. B.   +12 more
core   +1 more source

Al–Cu Composite Casting of Laser‐Deoxidized Copper: Bonding, Interfacial Chemistry, and Thermal Conductivity

Advanced Engineering Materials, EarlyView.
This study investigates laser‐based oxide removal of Cu inserts in oxygen‐free conditions and examines long‐term oxidation kinetics and surface chemistry under different atmospheres via X‐ray photoelectron spectroscopy. Al–Cu compound casting with differently oxidized surfaces is performed, and intermetallic phase formation, morphology, and thermal ...
Timon Steinhoff, Finn‐Lennard Janthur, Sascha Zimmermann, Sarah Seffer, Jörg Hermsdorf, René Gustus, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Christian Klose   +9 more
wiley   +1 more source

Nano reinforcement technique as a tool for enhancement the mechanical and fatigue properties

Curved and Layered Structures, 2022
For the past three decades, AA7075 based metal matrix composite materials showed more attraction due to their enhanced mechanical and fatigue properties.
AL-Mushehdany Abdulwahab, Yahya Mazin Mahmood, Ibrahim Esraa Kadhim, Alalkawi Hussain Jasim M.   +3 more
doaj   +1 more source

Determination of energy barrier profiles for high-k dielectric materials utilizing bias-dependent internal photoemission [PDF]

, 2004
We utilize bias-dependent internal photoemission spectroscopy to determine the metal/dielectric/silicon energy barrier profiles for Au/HfO2/Si and Au/Al2O3/Si structures. The results indicate that the applied voltage plays a large role in determining the
Atwater, Harry A., Bell, L. Douglas, Brewer, Julie Casperson, Farmer, Damon B., Gordon, Roy G., Walters, Robert J.   +5 more
core   +1 more source