Results 141 to 150 of about 538,837 (382)

Internal wire guide for GTAW welding [PDF]

, 1989
A welding torch for gas tungsten arc welding apparatus has a filler metal wire guide positioned within the torch, and within the shielding gas nozzle. The wire guide is adjacent to the tungsten electrode and has a ceramic liner through which the wire is ...
Dyer, Gerald E., Morgan, Gene E.
core   +1 more source

Physics basis for the first ITER tungsten divertor

Nuclear Materials and Energy, 2019
R. Pitts, X. Bonnin, F. Escourbiac, H. Frerichs, J. Gunn, T. Hirai, A. Kukushkin, E. Kaveeva, M. Miller, D. Moulton, V. Rozhansky, I. Senichenkov, E. Sytova, O. Schmitz, P. Stangeby, G. D. Temmerman, I. Veselova, S. Wiesen   +17 more
semanticscholar   +1 more source

Real‐Time 3D Ultrasound Imaging with an Ultra‐Sparse, Low Power Architecture

Advanced Healthcare Materials, EarlyView.
This article presents a novel, ultra‐sparse ultrasound architecture that paves the way for wearable real‐time 3D imaging. By integrating a unique convolutional array with chirped data acquisition, the system achieves high‐resolution volumetric scans at a fraction of the power and hardware complexity.
Colin Marcus, Md Osman Goni Nayeem, Aastha Shah, Jason Hou, Shrihari Viswanath, Maya Eusebio, David Sadat, Anantha P. Chandrakasan, Tolga Ozmen, Canan Dagdeviren   +9 more
wiley   +1 more source

Wire-arc directed energy deposition of steel onto tungsten substrate: fabricability and mechanical performance of synergistic structures

Virtual and Physical Prototyping
This study investigates the fabricability, microstructures, and mechanical properties of multi-material structures composed of W7Ni3Fe tungsten alloy and SS316L stainless steel using a wire-arc directed energy deposition process.
Md Abdul Karim, Saiful Islam, Gazi Tanvir, Sainand Jadhav, Young-Min Kim, Yongho Jeon, Duck Bong Kim   +6 more
doaj   +1 more source

The Promise of Solid Lubricants for a Sustainable Future

Advanced Materials, EarlyView.
Lubricants are vital for technology, saving energy and resources. The industry seeks sustainable solutions beyond fossil fuels. Solid lubricants offer extremely low friction and reduce environmental impact, especially in harsh conditions. Can these solids truly replace liquid lubricants, or are they limited to extreme applications?
Philipp G. Grützmacher, Andrey A. Voevodin, András Korényi‐Both, Maria Clelia Righi, Christopher DellaCorte, Nazlim Bagcivan, Ali Erdemir, Carsten Gachot   +7 more
wiley   +1 more source

Rapid Fabrication of Self‐Propelled and Steerable Magnetic Microcatheters for Precision Medicine

Advanced Materials, EarlyView.
A rapid Joule heating fabrication method for the production of self‐propelling, adaptive microcatheters, with tunable stiffness and integrated microfluidic channels is presented. Demonstrated through three microrobotic designs, including a steerable guiding catheter, an untethered wave‐crawling TubeBot, and a distal‐end propelled microcatheter, it was ...
Zhi Chen, Boris Rivkin, David Castellanos‐Robles, Ivan Soldatov, Lukas Beyer, Mariana Medina‐Sánchez   +5 more
wiley   +1 more source

The preparation and evaluation of high-purity, fine-grained tungsten and tungsten alloy castings summary report [PDF]

High purity, cylindrical castings of high melting point materials such as tungsten and tungsten ...
Foster, E. L., Jr., Nelson, S. G.
core   +1 more source

Transient Charging of Mixed Ionic‐Electronic Conductors by Anomalous Diffusion

Advanced Materials, EarlyView.
This article explores charge transport in mixed ionic‐electronic conductors (MIECs) through electrochemical impedance spectroscopy and transient current analysis. Focusing on PEDOT:PSS, WO3, and n‐doped PBDF, it uncovers the impact of anomalous diffusion via fractional modeling. The study reveals key correlations that deepen understanding and guide the
Heyi Zhang, Gonzalo Rivera‐Sierra, Shirin Siahjani‐Gultekin, Jenifer Rubio‐Magnieto, Anis Allagui, Ignacio Sanjuán, David Franco, Antonio Guerrero, Enrique H. Balaguera, Juan Bisquert   +9 more
wiley   +1 more source

Modes of occurrence and origin of tungsten in the M3 coal seam of Neogene from the Puyang Coal Mine

Meitan xuebao
Critical minerals in coal deposits have attracted much attention in recent years because of their potential economic significance. However, these critical minerals are becoming scarce and expensive as their resources in conventional ores are exhausted ...
Xingxing GUO, Xiaomei WANG, Haijian CHENG, Haoran YANG, Sidong PAN   +4 more
doaj   +1 more source

Spin and Charge Control of Topological End States in Chiral Graphene Nanoribbons on a 2D Ferromagnet

Advanced Materials, EarlyView.
Chiral graphene nanoribbons on a ferromagnetic gadolinium‐gold surface alloy display tunable spin and charge states at their termini. Atomic work function variations and exchange fields enabe transitions between singlet, doublet, and triplet configurations.
Leonard Edens, Francisco Romero‐Lara, Trisha Sai, Kalyan Biswas, Manuel Vilas‐Varela, Thomas Frederiksen, Diego Peña, Fabian Schulz, Jose Ignacio Pascual   +8 more
wiley   +1 more source