Results 71 to 80 of about 327,860 (265)

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

Oscillations of Higher Order Neutral Differential Equations

Rocky Mountain Journal of Mathematics, 1995
Consider linear neutral differential equations of odd order in the form \[ [x(t)- P(t) x(t-\tau)]^{(n)}+ Q(t) x(t-\sigma(t))= 0,\tag{1} \] where \(n\geq 1\), \(\tau> 0\), \(P\), \(Q\), \(\sigma\in C([t_0, \infty),\mathbb{R}^+)\) and \(\lim_{t\to \infty} (t- \sigma(t))= \infty\).
Zhang, B.G., Yu, J.S., Wang, Z.C.
openaire   +3 more sources

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

Some Oscillatory Results of Nonlinear Neutral Differential Equation

Ibn Al-Haitham Journal for Pure and Applied Sciences
In the last decades, functional differential equations have attracted the attention of many researchers; they were interested in the theory and its applications.
Zahrah Abdul abbas Hussein , Aqeel Falih Jaddoa   +1 more
doaj   +1 more source

Investigation of Oxygen‐Free Wetting Behavior of Aluminum on Copper via Molecular Dynamics Simulations and Experiments

Advanced Engineering Materials, EarlyView.
The wettability of aluminum droplets (Al) on different copper substrates (Cu), where liquid Al spreads on solid Cu surfaces to form a liquid–solid interface, is studied numerically and experimentally. The experimental and numerical results show good agreement in the fast‐spreading regime.
Shan Lyu, Timon Steinhoff, Finn‐Lennard Janthur, Sarah Seffer, Jörg Hermsdorf, Christian Klose, Ludger Overmeyer, Hans‐Jürgen Maier, Nina Merkert   +8 more
wiley   +1 more source

Existence of non-oscillatory solutions to higher-order mixed difference equations

Electronic Journal of Differential Equations, 2007
In this paper, we consider the higher order neutral nonlinear difference equation$$displaylines{ Delta^{m}(x(n)+p(n)x(au(n)))+f_1(n,x(sigma_{1}(n))) -f_2(n,x(sigma_{2}(n)))=0, cr Delta^{m}(x(n)+p(n)x(au(n)))+f_1(n,x(sigma_{1}(n))) -f_2(n,x(sigma_{2}(n)))=
Qiaoluan Li, Haiyan Liang, Wenlei Dong, Zhenguo Zhang   +3 more
doaj  

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

Oscillation Theorems for Forced Neutral Difference Equations

Journal of Mathematical Analysis and Applications, 1994
The present paper deals with the oscillation of solutions for forced neutral difference equations of the form \[ \Delta (x_ n + px_{n + \delta k}) - q_ n f(x_{\tau_ n}) = F_ n \tag{1} \] and \[ \Delta^ 2(x_ n+px_{n+\delta k})+q_ nf(x_{\tau_ n})=F_ n, \tag{2} \] where \(\delta=\pm 1\), \(p\) is a nonnegative real number, \(k\in\mathbb{N}\) and \(\Delta ...
Grace, S.R., Lalli, B.S.
openaire   +2 more sources

Resistance Rapid Heating of Aluminum Coatings in an Extreme High Vacuum–Adequate Atmosphere for Hot Stamping

Advanced Engineering Materials, EarlyView.
The subject of this work is the development of a corrosion‐protective coating on steel sheets for form hardening. Rapid heating in an extreme high vacuum (XHV)‐adequate atmosphere is a useful method to prevent oxidation during alloying of 22MnB5 and aluminum to obtain a metallurgical bonding.
Lorenz Albracht, Alexander Schnettger, Ulrich Holländer, Sven Hübner, Bernd‐Arno Behrens, Hans Jürgen Maier   +5 more
wiley   +1 more source

Bounded Oscillation of a Forced Nonlinear Neutral Differential Equation

Abstract and Applied Analysis, 2012
This paper is concerned with the nth-order forced nonlinear neutral differential equation [x(t)-p(t)x(τ(t))](n)+∑i=1mqi(t)fi(x(σi1(t)),x(σi2(t)),…,x(σiki(t)))=g(t),  t≥t0.
Zeqing Liu, Yuguang Xu, Shin Min Kang, Young Chel Kwun   +3 more
doaj   +1 more source