Results 91 to 100 of about 18,093 (183)

Multifaceted Behavior and Functional Versatility of Ferritic Stainless Steels, Part I: Applications and Processing, a Review

steel research international, EarlyView.
This review investigates the processing‐microstructure‐property relationships in ferritic stainless steels (FSSs). It highlights advances in deformation behavior, heat treatments, surface modifications, and alloying effects. Theoretical models, including Johnson‐Mehl‐Avrami‐Kolmogorov, Arrhenius, nucleation theory, and diffusion theories, are discussed
Shahab Bazri, Carlo Mapelli, Silvia Barella, Andrea Gruttadauria, Davide Mombelli   +4 more
wiley   +1 more source

High reliability sheathed, beryllia insulated, tungsten-rhenium alloy thermocouple assemblies; their fabrication and EMF stability [PDF]

Tantalum sheathed, BeO insulated, W-3% Re/W-25% Re thermocouple assemblies were fabricated and their emf drift determined during 2059 hours of exposure at 2073 K in a gaseous helium environment.
Burns, G. W., Hurst, W. S., Scroger, M. G.   +2 more
core   +1 more source

Nanostructuring Copper Tungstate Photoanodes: Performance Enhancement and Fundamental Limitations

Small Structures, EarlyView.
Nanostructuring of CuWO4 photoanodes yields a ~ tenfold photocurrent enhancement compared to dense films, reaching 0.6 mA cm−2 at 1.23 V versus reversible hydrogen electrode, among the best values reported for this material. Yet, performance remains far below the theoretical limit due to severe bulk recombination and poor electron transport ...
Oliver Mendoza Reyes, Dariusz Mitoraj, Joachim Bansmann, Radim Beranek   +3 more
wiley   +1 more source

BaIr2Si9: A Hybrid Structure Bridging Sodalite, Clathrate, and Skutterudite Patterns

Zeitschrift für anorganische und allgemeine Chemie, EarlyView.
BaIr2Si9 is a p‐type semiconductor combining structural features of the solalithe, clathrate, and skutterudite type of structure. The cage compound BaIr2Si9 adopts the BaRh2Si9 structure type with space group C2/c (Pearson symbol mC48, a = 6.230(1) Å, b = 21.409(3) Å, c = 6.232(1) Å, β = 90.30(1)°).
Walter Jung, Xian‐Juan Feng, Alim Ormeci, Mitja Krnel, Hong Duong Nguyen, Raúl Cardoso‐Gil, Marcus Schmidt, Michael Baitinger, Ulrich Schwarz, Yuri Grin   +9 more
wiley   +1 more source

Threshold Currents of Vacuum Arcs With Tungsten and Copper Cathodes

High Voltage, EarlyView.
ABSTRACT This paper presents the results of an experimental study aimed at determining the threshold current for triggering a vacuum arc discharge, the probability of arc ignition and the average arc operation time depending on the current for tungsten and copper electrodes.
P. S. Mikhailov, I. L. Muzyukin, I. V. Uimanov, D. L. Shmelev, S. A. Barengolts   +4 more
wiley   +1 more source

Impurity transport and its modification by MHD in tokamak plasmas, with application to tungsten in WEST

, 2019
Neoclassical impurity transport & poloidal asymmetry-Can be determined analytically in a self-consistent way-Natural asymmetry (no torque) has already a large impact A magnetic island suppresses thermal screening above a critical size-Verified numerically on a typical WEST plasma equilibrium-When impurity transport is predominantly turbulent (as on ...
Maget, P., Frank, J, Agullo, O., Garbet, X., Lütjens, H.   +4 more
openaire   +1 more source

Selected Ion Flow‐Tube Mass Spectrometry (SIFT‐MS) of Mo(CO)6 and W(CO)6 Vapours With Positive and Negative Reagent Ions

Journal of Mass Spectrometry, Volume 61, Issue 3, March 2026.
ABSTRACT Selected ion flow‐tube mass spectrometry (SIFT‐MS) was used to characterise the gas‐phase ion–molecule reactions of the eight standard reagent ions H3O+, NO+, O2+˙, OH−, O−˙, O2−˙, NO2− and NO3− with molybdenum and tungsten hexacarbonyls, Mo(CO)6 and W(CO)6.
Kseniya Dryahina, Patrik Španěl, Stanislav Musil, Miroslav Polášek   +3 more
wiley   +1 more source

Ion Chemistry in Dielectric Barrier Discharge Ionization: Recent Advances in Direct Gas Phase Analyses

Mass Spectrometry Reviews, Volume 45, Issue 2, Page 193-217, March/April 2026.
ABSTRACT Dielectric barrier discharge ionization (DBDI) sources, employing low‐temperature plasma, have emerged as sensitive and efficient ionization tools with various atmospheric pressure ionization processes. In this review, we summarize a historical overview of the development of DBDI, highlighting key principles of gas‐phase ion chemistry and the ...
Kseniya Dryahina, Miroslav Polášek, Juraj Jašík, Kristýna Sovová, Patrik Španěl   +4 more
wiley   +1 more source

Global modelling of tungsten impurity transport based on the drift-kinetic equation

Global modelling of tungsten impurity transport based on the drift-kinetic equation
A global kinetic simulation model of collisional impurity transport is developed for evaluating the radial particle flux of tungsten impurity in the edge region of a tokamak plasma. Here, the plasma including the impurity and the background ion is presupposed to be quasi-steady.
openaire  

Impact of E × B drift on tungsten impurity transport and analysis of its instantaneous response: a particle Monte Carlo simulation

Nuclear Fusion
Abstract Tungsten (W), as the primary plasma-facing material in tokamaks, is incompatible with the core plasma. Even extremely low concentrations of W impurities can contaminate the plasma. Therefore, the transport and core accumulation of W impurities are among the key challenges in the fusion community.
Yihan Wu, Chaofeng Sang, Yilin Wang, Chen Zhang, Qingrui Zhou, Yudie He, Dezhen Wang   +6 more
openaire   +1 more source