Results 41 to 50 of about 1,653 (221)

Self‐Activating Electrocatalysts for Water Splitting: Advancing Structure–Performance Understanding and Beyond

Advanced Energy Materials, EarlyView.
Self‐activating electrocatalysts offer strong potential for advanced water splitting, enabled by their dynamic compositional and structural evolution during operation. This review highlights recent advances in self‐activating OER and HER catalysts, emphasizing the driving forces and mechanisms underlying their adaptive behavior. A conceptual network of
Christean Nickel, Bahareh Feizi Mohazzab, Kiarash Torabi, David Leander Troglauer, Guillermo Corea, Shikang Han, Dandan Gao   +6 more
wiley   +1 more source

Highly Fast Response of Pd/Ta₂O₅/SiC and Pd/Ta₂O₅/Si Schottky Diode-Based Hydrogen Sensors

Sensors, 2021
Herein, the fabrication of a novel highly sensitive and fast hydrogen (H2) gas sensor, based on the Ta2O5 Schottky diode, is described. First, Ta2O5 thin films are deposited on silicon carbide (SiC) and silicon (Si) substrates via a radio frequency (RF ...
Muhammad Hussain, Woonyoung Jeong, Il-Suk Kang, Kyeong-Keun Choi, Syed Hassan Abbas Jaffery, Asif Ali, Tassawar Hussain, Muhammad Ayaz, Sajjad Hussain, Jongwan Jung   +9 more
doaj   +1 more source

The Damhus Hoard: New Insights Into Some of the Earliest Viking Silver Coinage

Archaeometry, EarlyView.
ABSTRACT In 2018, a hoard totalling 266 silver Viking Age coins was discovered near Damhus, south of Ribe (Denmark). The coins belong to the early ninth‐century ‘KG 4’ series, with the vast majority, 262 coins, identified as having Face/Forward Looking Deer on the obverse/reverse.
Thomas Birch, Helle Horsnæs, Rasmus Andreasen, Claus Feveile, Stephen Merkel, Jane Kershaw, Guillaume Sarah, Rory Naismith, Jens Christian Moesgaard   +8 more
wiley   +1 more source

Hot-Pressing of Tantalum Carbide (I)

Journal of the Japan Society of Powder and Powder Metallurgy, 1970
Carbides of Groups IVb, Vb, and VIb metals have high melting point, high hardness, and good electrical conductivity as well as good thermionic emissivity. Moreover, they exhibit high mechanical strength at elevated temperatures.Among these, ZrC, HfC, TaC and their solid solutions are important as high temperature materials because of their high melting
Shigetomo Matsuo, Michihiko Horie, Yoshio Jumi   +2 more
openaire   +3 more sources

Extraction replica method from thinned transmission electron microscopy samples without floating off carbon films: A case study on reduced activation steel

Journal of Microscopy, EarlyView.
Abstract A recipe for producing carbon extraction replicas from twin‐jet electropolished disks is described. This technique allows tracking the analysed region with respect to the bulk sample. An example use of the method as applied to a reduced activation ferritic martensitic (RAFM) steel, ‘UK‐RAFM’, is reported.
Jack Haley, Alex Dickinson‐Lomas, Qianyi Sun, David Bowden   +3 more
wiley   +1 more source

High-temperature toughening in ternary medium-entropy (Ta1/3Ti1/3Zr1/3)C carbide consolidated using spark-plasma sintering

Journal of Asian Ceramic Societies, 2020
We report for the first time the effect of temperature on the mechanical properties of (Ta1/3Ti1/3Zr1/3)C carbide. Flexural strength and fracture toughness were investigated using the three-point bending technique in argon.
D. Demirskyi, T. Nishimura, T.S. Suzuki, Y. Sakka, O. Vasylkiv, K. Yoshimi   +5 more
doaj   +1 more source

Estimates of Spawning Stream Contributions to an Imperilled Bull Trout Metapopulation Utilizing Otolith Geochemistry and Redd Counts

Ecology of Freshwater Fish, Volume 35, Issue 3, July 2026.
ABSTRACT Migratory fish species have experienced substantial declines throughout aquatic habitats, but actions to manage and conserve migratory species require a better understanding of the relative contributions of local populations to the metapopulation.
Samuel L. Bourret, Jill M. Janak, Timothy J. Linley, Geoffrey A. McMichael   +3 more
wiley   +1 more source

Unraveling Mechanisms and Engineering Strategies for Superior Photocarrier Dynamics Toward Efficient Photocatalysis

EcoEnergy, Volume 4, Issue 3, June 2026.
Despite its potential, photocatalysis is limited by inefficient charge carrier separation and transport. This article reviews the mechanisms, characterization methods, and strategies for improvement, concluding with future challenges in the field. ABSTRACT Photocatalysis offers a promising solution to environmental and renewable energy issues. However,
Leqi Cheng, Xin Wang, Yishen Zhang, Xinrong Zhang, Jung‐Ho Yun, Songcan Wang   +5 more
wiley   +1 more source

Wear behavior of aluminum LM4 reinforced with WC and TA/NbC hybrid nano-composites fabricated through powder metallurgy technique [PDF]

FME Transactions, 2019
The present investigation aims to understand the wear behavior of aluminum LM4 matrix reinforced with the different weight percentage of tungsten carbide and tantalum-niobium carbide (0.5, 1.0, 1.5 and 2wt %) hard particles.
Sačit T.S., Mohan N.
doaj  

Preparation of tantalum carbide layers on carbon using the metalliding process [PDF]

, 2009
This work concerns the preparation of tantalum carbide films on carbon based substrates using the metalliding process in LiF-NaF molten medium (60-40% mol.), containing tantalum heptafluorotantalate ions TaF72-, in the 800-900 °C temperature range.
Winterton, Peter, Massot, Laurent, Taxil, Pierre, Chamelot, Pierre   +3 more
core   +1 more source