Results 31 to 40 of about 3,531,769 (312)

TEM study of the effect of high-temperature thermal cycles on the stability of the Y-Al-O oxides in MA956 ODS steel [PDF]

, 2019
MA956, a commercial ferritic grade of Oxide Dispersion-Strengthened (ODS) steel, was investigated using transmission electron microscopy (TEM) to evaluate the influence of high-temperature thermal cycles on the nanometric dispersed oxides.
Arzt, Betz, Bhadeshia, Capdevila, Chao, Chen, Chen, Czyrska-Filemonowicz, Czyrska-Filemonowicz, Dubiel, Dubiel, Hsiung, Kasada, Klueh, Krautwasser, Lee, Noh, Noh, Noh, Oka, Oka, Ratti, Rösler, Schaffer, Sittel, Toloczko, Wasilkowska, Wolski, Zakine, Zhang   +29 more
core   +2 more sources

Structure, Phase Composition and Properties of Surface Layers of the Titanium after Electroexplosive Doping with Yttrium and Electron-Beam Processing

Успехи физики металлов, 2015
Modification of surface layer of technically pure titanium is carried out by the combined method combining electroexplosive doping with yttrium and subsequent irradiation by high-intensity electron beam with parameters as follow: energy density of ...
V. E. Gromov, K. V. Sosnin, Yu. F. Ivanov, O. A. Semina
doaj   +1 more source

Beneficial Effect of Pt and of Pre-Oxidation on the Oxidation Behaviour of an NiCoCrAlYTa Bond-Coating for Thermal Barrier Coating Systems [PDF]

, 2011
The oxidation behaviour of a thermal barrier coating (TBC) system is a major concern as the growth of the thermally grown oxide (TGO) layer on the bondcoating creates stresses that greatly favour the thermal barrier spallation.
Monceau, Daniel, Oquab, Djar, Péré, Eve, Raffaitin, Aymeric, Vande Put, Aurélie   +4 more
core   +3 more sources

A Comprehensive Review on Two-Step Thermochemical Water Splitting for Hydrogen Production in a Redox Cycle

Energies, 2022
The interest in and need for carbon-free fuels that do not rely on fossil fuels are constantly growing from both environmental and energetic perspectives. Green hydrogen production is at the core of the transition away from conventional fuels. Along with
Daphne Oudejans, Michele Offidani, Achilleas Constantinou, Stefania Albonetti, Nikolaos Dimitratos, Atul Bansode   +5 more
doaj   +1 more source

Densification and preservation of ceramic nanocrystalline character by spark plasma sintering [PDF]

, 2012
Spark plasma sintering is a hot pressing technique where rapid heating by dc electric pulses is used simultaneously with applied pressure. Thus, spark plasma sintering is highly suitable for rapid densification of ceramic nanoparticles and preservation ...
C Estournés, Liu L, R Chaim, R Marder, Schatt W, Schatt W, Tobi Even-Tzur O, Z Shen   +7 more
core   +2 more sources

Catalysis AI Agent Guides Discovering the Universal Design Principle of Cu‐Based Single‐Atom Alloy Catalysts for CO2 Electroreduction

Angewandte Chemie, EarlyView.
Artificial intelligence (AI) enables the systematic analysis and comparative evaluation of experimental and theoretical data, optimizes the catalytic reaction research workflow, and accelerates the discovery of high‐performance electrocatalysts. ABSTRACT Copper (Cu)‐based single‐atom alloys (SAAs) represent a promising strategy for optimizing the ...
Xuning Wang, Zhong Li, Di Zhang, Hao Li, Haoxiang Xu, Daojian Cheng   +5 more
wiley   +2 more sources

Ni/CeO2 Nanoparticles Promoted by Yttrium Doping as Catalysts for CO2 Methanation

, 2020
Ni (5 wt %) catalysts over yttrium-modified CeO2 oxides synthesized by the hydrothermal method were prepared. For comparison, Ni was supported over pure CeO2 and Y2O3.
Chao Sun, P. Beaunier, V. La Parola, L. Liotta, P. Da Costa   +4 more
semanticscholar   +1 more source

On the effect of yttrium promotion on Ni-layered double hydroxides-derived catalysts for hydrogenation of CO2 to methane

, 2020
Ni-containing mixed oxides derived from layered double hydroxides with various amounts of yttrium were synthesized by a co-precipitation method at constant pH and then obtained by thermal decomposition.
Chao Sun, Katarzyna Świrk, D. Wierzbicki, M. Motak, T. Grzybek, P. Da Costa   +5 more
semanticscholar   +1 more source

Navigating Nitration Chemistry: A Practical Guide to Reagents, Mechanisms, and Selectivity

Angewandte Chemie, EarlyView.
This review highlights key contributions of modern nitration chemistry, emphasizing sustainable mechanistic platforms and comparing the performance of both organic and inorganic reagents across aromatic, ipso‐, olefin, alkyne, and heteroatom nitration. It provides the community with a clearer, unified perspective on current advances and facilitates the
Harry Lecomte, Anthony J. Fernandes, Dmitry Katayev   +2 more
wiley   +2 more sources

Enhancing strength and ductility of Nb alloy via Y addition by vacuum electromagnetic levitation melting under oxygen carrier route

Journal of Materials Research and Technology
Niobium (Nb) is considered as candidate material for heat pipe in space nuclear reactors due to high melting point, low density, excellent compatibility with alkali liquid metals, irradiation resistance, workability and welding performance, but low ...
Zhaokun Song, Xiaoxin Zhang, Mingyu Shao, Yanchang Liu, Bin Liang, Zhangjun Bai, Qingzhi Yan   +6 more
doaj   +1 more source