Results 81 to 90 of about 148,672 (304)

A Review of Studies on the Influence of Rare-Earth Elements on the Microstructures and Properties of Copper and Copper Alloys and Relevant Applications

Metals
The rapid advancements in electronics, electric vehicles, and green technologies have imposed increasingly stringent demands on copper-based materials.
Jin-Song Liu, Wen-Xin Yu, Da-Yong Chen, Song-Wei Wang, Hong-Wu Song, Shi-Hong Zhang   +5 more
doaj   +1 more source

Solidification of Al alloys under electromagnetic pulses and characterization of the 3D microstructures under synchrotron x-ray tomography [PDF]

, 2015
A novel programmable electromagnetic pulse device was developed and used to study the solidification of Al-15 pct Cu and Al-35 pct Cu alloys. The pulsed magnetic fluxes and Lorentz forces generated inside the solidifying melts were simulated using finite
Andrew J. Bodey, C. Song, C.Y. Ho, Christoph Rau, D. Bernard, E. Basham, E.G. Bakhoum, E.O. Hall, G.I. Eskin, G.N. Ramachandran, G.P. Jones, J.A. Dantzig, J.A. Wert, Jiawei Mi, L. Li, M. Garnier, M. Guo, M. Johnsson, M.C. Flemings, M.J. Li, N. Pei, N.Y. Konstantinova, P. Koltun, Peter Lobo Kazinczi, Q. Li, S. Asai, S. Bartkevičius, S. Dan, S. Eckert, S. Tamirisakandala, S. Titarenko, S.D. Pawar, S.H. Hanhn, T. Campanella, Theerapatt Manuwong, W. Dai, Wei Zhang, X. Li, Y. Du, Y. Plevachuk, Y.J. Zhang, Z. Shu-cai, Z.X. Yin   +42 more
core   +1 more source

Oxide‐Free Titanium Coatings by Wire Arc Spraying in a Silane‐Doped Inert Atmosphere

Advanced Engineering Materials, EarlyView.
A silane‐doped argon atmosphere enables the production of oxide‐free titanium coatings via twin‐wire arc spraying at ambient pressure. This innovative approach eliminates residual oxygen, creating process conditions that prevent oxidation and nitride formation.
Manuel Rodriguez Diaz, Maik Szafarska, René Gustus, Kai Möhwald, Hans Jürgen Maier   +4 more
wiley   +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

Microstructure and chemical composition of Roman orichalcum coins emitted after the monetary reform of Augustus (23 B.C.) [PDF]

, 2019
A collection of ancient Roman orichalcum coins, i.e., a copper-zinc alloy, minted under the reigns from Caesar to Domitianus, have been characterised using scanning electron microscopy (SEM-EDS) and electron microprobe analysis (EMPA).
Catalli F., De Vito C., Di Fazio M., Felici A. C.   +3 more
core   +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

Braze alloy holds bonding strength over wide temperature range [PDF]

, 1966
Copper-based quaternary alloys of the solid solution type is used for vacuum furnace brazing of large stainless steel components at a maximum temperature of 1975 deg F.

core   +1 more source

Tailored Hierarchical Porous Copper Architectures via Three Dimensional Printing and Pressure‐less Sintering for Next‐Generation Lithium‐Metal Batteries

Advanced Engineering Materials, EarlyView.
A hierarchical porous copper current collector is fabricated via three‐dimensional printing combined with pressureless sintering to stabilize lithium metal anodes. The interconnected architecture lowers local current density, guides uniform Li deposition within pores, and suppresses dendrite growth.
Alok Kumar Mishra, Mukul Shukla
wiley   +1 more source

Performance Improvement of Tin-Based Babbitt Alloy Through Control of Microstructure

Alloys
Babbitt alloys are among the most commonly used materials for sliding bearings. However, with the high speeds and heavy loads of modern machinery, as well as the demands of extreme working conditions, the temperature resistance, strength, and hardness of
Zhang Wei, Honglin Shu, Gaixiao Qiao, Qunfeng Zeng, Guoping Wang, Qian Jia   +5 more
doaj   +1 more source

Friction and wear of selected metals and alloys in sliding contact with AISI 440 C stainless steel in liquid methane and in liquid natural gas [PDF]

Aluminum, titanium, beryllium, nickel, iron, copper, and several copper alloys were run in sliding contact with AISI 440C in liquid methane and natural gas.
Wisander, D. W.
core   +1 more source