Results 111 to 120 of about 502,111 (300)

High performance alloy electroforming [PDF]

Electroformed copper and nickel are used in structural applications for advanced propellant combustion chambers. An improved process has been developed by Bell Aerospace Textron, Inc. wherein electroformed nickel-manganese alloy has demonstrated superior
Malone, G. A., Winkelman, D. M.
core   +1 more source

Magnetic Transformations in the Organic Conductor kappa-(BETS)2Mn[N(CN)2]3 at the Metal-Insulator Transition

, 2010
A complex study of magnetic properties including dc magnetization, 1H NMR and magnetic torque measurements has been performed for the organic conductor kappa-(BETS)2Mn[N(CN)2]3 which undergoes a metal-insulator transition at T_MI~25K.
A. H. Morrish, E. B. Yagubskii, L. Ouahab, L. V. Zorina, M. V. Kartsovnik, N. D. Kushch, O. M. Vyaselev, T. Ishiguro, W. Biberacher   +8 more
core   +1 more source

EBSD Study of Creep‐Induced Lattice Misorientation in MgO‐Particle‐Reinforced Austenitic Steel Composites

Advanced Engineering Materials, EarlyView.
Creep experiments at 900°C on coarse‐grained steel‐ceramic composites containing recycled magnesia reveal that higher ceramic volume fractions significantly enhance the creep resistance. Detailed EBSD investigations identify subgrain formation in the steel matrix as the dominant deformation mechanism.
Moritz Müller, Amaya Compart, Mahnaz Mehdizadehlima, Serhii Yaroshevskyi, Christos G. Aneziris, Horst Biermann, Anja Weidner   +6 more
wiley   +1 more source

Determination of oxygen vacancy limit in Mn substituted YSZ ceramics

, 2017
The series of Mnx(Y0.148Zr0.852)1-xO2-{\delta} ceramics was systematically studied by means of X-ray absorption and emission spectroscopy and DC magnetic susceptibility.
Bućko, Mirosław M., Kapusta, Czesław, Pomykalska, Daria, Sikora, Marcin, Stępień, Joanna   +4 more
core   +1 more source

Reduction of Oxide Inclusions During the High‐Frequency Welding of Steel via a Nonthermal Ar/H2 Plasma Jet

Advanced Engineering Materials, EarlyView.
High‐frequency (HF) welding of steel is limited by oxide inclusions that degrade weld quality. This study demonstrates, for the first time, the integration of a nonthermal Ar/H2 dielectric barrier discharge (DBD) plasma jet into HF welding. Local plasma treatment provides effective shielding and in‐situ oxide reduction, resulting in markedly fewer and ...
Viktor Udachin, Lienhard Wegewitz, René Gustus, Henning Wiche, Wolfgang Maus‐Friedrichs   +4 more
wiley   +1 more source

Neurological outcomes associated with low-level manganese exposure in an inception cohort of asymptomatic welding trainees

Scandinavian Journal of Work, Environment & Health, 2015
OBJECTIVE: Long-term, high-level exposure to manganese (Mn) is associated with impaired central nervous system (CNS) function. We quantitatively explored relations between low-level Mn exposure and selected neurological outcomes in a longitudinal ...
Marissa G Baker, Susan R Criswell, Brad A Racette, Christopher D Simpson, Lianne Sheppard, Harvey Checkoway, Noah S Seixas   +6 more
doaj   +1 more source

Electron Correlation and Jahn-Teller Interaction in Manganese Oxides

, 1997
The interplay between the electron repulsion $U$ and the Jahn-Teller electron-phonon interation $E_{LR}$ is studied with a large $d$ model for the ferromagnetic state of the manganese oxides. These two interactions collaborate to induce the local isospin
A. Georges, A. J. Millis, A. J. Millis, A. J. Millis, A. Urushibara, B. F. Woodfield, C. C. Yu, C. Zener, D. D. Sarma, D. R. Hamann, Guo-meng Zhao, H. Y. Hwang, Hyun Cheol Lee, J. Kanamori, K. Chahara, K. I. Kugel’, M. C. Martin, N. Furukawa, Naoto Nagaosa, P. W. Anderson, P. W. Anderson, P.-G. de Gennes, R. M. Kusters, R. von Helmolt, S. Ishihara, S. Jim, Shuichi Murakami, Y. Okimoto, Y. Tokura   +28 more
core   +1 more source

Enhancing Strength and Electrical Conductivity in Al–Zr–Sc Conductor Alloys Through Sn and Sr Microalloying and Two‐Step Aging Treatment

Advanced Engineering Materials, EarlyView.
Trace additions of Sn and Sr combined with a two‐step aging treatment are shown to enhance the microstructure and performance of Al–Zr–Sc conductor alloys. Strength and electrical conductivity increase concurrently through accelerated precipitation of fine Al3(Sc, Zr) precipitates and improved dislocation resistance, offering a cost‐effective pathway ...
Quan Shao, Emad M. Elgallad, Alexandre Maltais, X.‐Grant Chen   +3 more
wiley   +1 more source

Application of Raman and Photoluminescence Spectroscopy to MgO‐C Refractories

Advanced Engineering Materials, EarlyView.
Visible to near infrared luminescence of MgO is studied on MgO‐C bricks and nominally pure MgO powder, with focus on two similar sharp high‐intensity signals, at 699 and 871 nm, each surrounded by symmetrical sidebands. The nature of these sidebands is investigated by temperature‐dependent spectroscopic measurements, confirming phonon involvement by ...
Julia Richter, Felix Drechsler, Till M. J. Stadtmüller, Cameliu Himcinschi, Christos G. Aneziris, Jens Kortus   +5 more
wiley   +1 more source

Substitutional 4d and 5d Impurities in Graphene

, 2016
We describe the structural and electronic properties of graphene doped with substitutional impurities of 4d and 5d transition metals. The binding energy and distances for 4d and 5d metals in graphene show similar trends for the later groups in the ...
Aguilera-Granja, Faustino, Alonso-Lanza, Tomás, Ayuela, Andrés   +2 more
core   +1 more source