Results 111 to 120 of about 221,530 (305)

Corrosion and Process Analysis of a Preoxidized MgO Recyclate‐Based Cermet Anode in Laboratory‐Scale Na‐Cryolite Molten Salt Electrolysis of Aluminum at 1000°C

Advanced Engineering Materials, EarlyView.
EDX elemental map of the pre‐oxidized MgO–steel cermet anode cross section after electrolysis. The development of inert anodes for aluminum electrolysis remains challenging due to the high corrosivity of cryolite‐based melts at 950°C–1000°C. This study investigates the corrosion and process behavior of a carbon‐free MgO–steel cermet anode derived from ...
Alexander Adamczyk, Farhan Hossain, Felipe A. Garcia Paz, Serhii Yaroshevskyi, Felix Drechsler, Daniel Vogt, Christos G. Aneziris, Alexandros Charitos   +7 more
wiley   +1 more source

A‐Site Doping Enables Stabilization and Migration of Oxygen Vacancies in Langasite Frameworks

Small Structures
Open‐framework oxides are promising oxide‐ion conducting candidates for next‐generation solid oxide fuel cells (SOFCs) owing to their ability to accommodate and transport oxygen defects.
Yang Chen, Zhaoji Luo, Xiaohui Li, Cheng Li, Sihao Deng, Lunhua He, Qiang Li, Xianran Xing, Xiaojun Kuang   +8 more
doaj   +1 more source

Concentration polarization and ionic conductivity of nanocomposite thermoelectric materials K0.01Cu1.94S, K0.02Cu1.94S, K0.03Cu1.94S

Eurasian Journal of Physics and Functional Materials
The paper presents experimental results of concentration polarization and ionic conductivity of nanocomposite thermoelectric materials K0.01Cu1.94S , K0.02Cu1.94S , K0.03Cu1.94S . According to X-ray phase analysis, the synthesized samples are monoclinic
M. M. Kubenova, M. Kh. Balapanov, K. A. Kuterbekov, B. Akhmetgaliev, R. Kh. Ishembetov   +4 more
doaj   +1 more source

Differences in nature of electrical conductions among Bi4Ti3O12-based ferroelectric polycrystalline ceramics

Scientific Reports, 2017
Bismuth titanate Bi4Ti3O12 (BiT), was one of the most promising lead-free high-temperature piezoelectric materials, due to high Curie temperature (675 °C) and large spontaneous polarization (50 µC/cm2); however, extensive studies had revealed that high ...
Changbai Long, Qi Chang, Huiqing Fan
doaj   +1 more source

High-performance oxygen permeation membranes: Cobalt-free Ba0.975La0.025Fe1-xCuxO3-δ ceramics

Journal of Materiomics, 2019
A new group of cobalt-free perovskite oxides, Ba0.975La0.025Fe1-xCuxO3-δ (BLFC, x = 0.05–0.15), was designed, characterized and applied as oxygen permeation membranes.
Zilu Liu, Kui Li, Hailei Zhao, Konrad Świerczek   +3 more
doaj   +1 more source

Raman Spectroscopic Identification of Oxide Phases in a Corroded MgO–Steel Composite Anode Used in Aluminum Molten Salt Electrolysis

Advanced Engineering Materials, EarlyView.
Micro‐Raman spectroscopy is applied to characterize corrosion products in a recycled‐based MgO–316L steel composite anode after molten salt electrolysis. A depth‐dependent Fe–O/Fe–Al–O layer sequence of magnetite, hercynite, and an Al‐doped magnetite transition zone is identified.
Felix Drechsler, Serhii Yaroshevskyi, Alexander Adamczyk, Mahnaz Mehdizadehlima, Julia Richter, Cameliu Himcinschi, David Rafaja, Alexandros Charitos, Christos G. Aneziris, Jens Kortus   +9 more
wiley   +1 more source

Dielectric Barrier Discharge Plasma Deoxidation of Natively Oxide Layer of Copper Powders in a Fluidized Bed

Advanced Engineering Materials, EarlyView.
This paper presents a novel approach to reducing oxide layers on metal powders using low‐temperature hydrogen dielectric barrier discharge plasmas at atmospheric pressure. Unlike conventional hydrogen‐plasma reductions, the powders do not contact the plasma directly.
Shukang Zhang, Annett Wollmann, Thomas Gimpel, Alfred P. Weber   +3 more
wiley   +1 more source

Experimental analysis of potential origin of p-type conductivity in LiGa5O8

APL Materials
Recently, LiGa5O8, with a bandgap of ∼5.4 eV, has been demonstrated as a p-type semiconductor, which can be used to form a pn junction with β-Ga2O3. However, the occurrence of the p-type conductivity remains undetermined.
Kaitian Zhang, Vijay Gopal Thirupakuzi Vangipuram, Hongping Zhao   +2 more
doaj   +1 more source

Development of Sustainable MgO–C Refractories Using MgO–C Recyclates and a Novel Eco‐Friendly Fructose–Tannin Binder Crosslinked With Citric Acid

Advanced Engineering Materials, EarlyView.
This study develops sustainable MgO–C refractories using recycled materials and eco‐friendly fructose–tannin binders. The enhanced performance of citric acid as a cross‐linker and functional additives on mechanical and thermomechanical properties was examined. Characterization included strength tests, immersion trials, and microstructural and inclusion
Dinesh K. Gunasekar, Jana Hubálková, Steffen Dudczig, Gert Schmidt, Florian Kerber, Thomas Schemmel, Patrick Gehre, Christos G. Aneziris   +7 more
wiley   +1 more source

Reversible carrier-type transition in gas-sensing oxides and nanostructures

, 2010
Despite many important applications of a-Fe2O3 and Fe doped SnO2 in semiconductors, catalysis, sensors, clinical diagnosis and treatments, one fundamental issue that is crucial to these applications remains theoretically equivocal- the reversible carrier-
Arulsamy, Andrew Das, Cvelbar, Uros, Elersic, Kristina, Modic, Martina, Mozetic, Miran   +4 more
core   +1 more source