Results 31 to 40 of about 1,828 (197)
Angewandte Chemie, EarlyView.A regio‐ and diastereoselective method for strain‐release pentafluorosulfanylation of carbonyl‐containing 1,3‐disubstituted [1.1.0]bicyclobutanes (BCBs) was developed that led to several fortuitous discoveries. For instance, the resultant SF5‐cyclobutanes (SF5‐CBs) exhibit close SF5⋯C═X contacts (X = C, N, O) and provide synthetic access to a new class
Alexander M. Stephens +9 more
wiley +2 more sources
, 1977 The first studies relevant to alkali metal borides were carried out in the nineteenh century as an incidental part of the effort to isolate element boron by reduction of several boron compounds...
Naslain, Roger +2 more
openaire +2 more sources
Impact of MgO Additions on the Oxidation Resistance and Compression Behavior of Vanadium Alloys
Advanced Engineering Materials, EarlyView.An increase in oxidation resistance at 600 °C is achieved for alloys containing more than 2.5 wt.% MgO. It has been established that, along with V2O5, MgO6V2, and Mg2O7V2 are formed, which are presumed to enhance oxidative stability. Furthermore, the possible transformation of Mg‐vanadates through reaction with CO2, which presumably occurs in this ...
Ievgen Solodkyi +5 more
wiley +1 more source
Short-Term Oxidation of HfB2-SiC Based UHTC in Supersonic Flow of Carbon Dioxide Plasma
PlasmaThe short-term (5 min) exposure to the supersonic flow of carbon dioxide plasma on ultrahigh-temperature ceramics of HfB2-30vol.%SiC composition has been studied.
Aleksey V. Chaplygin +14 more
doaj +1 more source
Characterizations and boron diffusion modelling on the AISI H13 steel [PDF]
Journal of Mining and Metallurgy. Section B: MetallurgyA kinetic approach accounting for the linearity of boron profiles through the boronized layers on AISI H13 steel was developed. It aims to track the temporal evolution of the thicknesses of the FeB and (FeB + Fe2B) layers by considering new expressions ...
Ortiz-Domínguez M. +2 more
doaj +1 more source
Успехи физики металлов, 2022 The results obtained in the last two decades in the development of functional tribological alloys for the castings working under severe abrasion, erosion, and erosion–corrosion conditions are reviewed.
Yu. G. Chabak, V. I. Zurnadzhy, M. A. Golinskyi, V. G. Efremenko, N. P. Zaichuk, I. Petryshynets, and S. P. Shymchuk
doaj +1 more source
Advanced Engineering Materials, EarlyView.Controlling the Field Assisted Sintering Technology (FAST) parameters, dwell temperature and cooling rate, significantly influences the microstructural evolution in titanium aluminide GE4822. Significant γ‐lamellar colonies develop only upon cooling through the α‐transus.
Jack Krohn, James Pepper, Martin Jackson
wiley +1 more source
High-T c 2D ambient BCS superconductors in hydrogenated transition-metal borides
npj 2D Materials and ApplicationsThe discovery of MgB2, with T c of 39 K, has inspired intensive studies on various metal (di)-borides to identify other potential conventional high-temperature superconductors.
Jakkapat Seeyangnok +2 more
doaj +1 more source
Nuclear Materials and Energy, 2020 Reactive Sintered Borides (RSBs) are novel borocarbide materials derived from FeCr-based cemented tungsten (FeCr-cWCs) show considerable promise as compact radiation armour for proposed spherical tokamak (Humphry-Baker, 2007 [1], [2], [3], [4], [5].
J.M. Marshall, D. Walker, P.A. Thomas
doaj +1 more source
Advanced Science, EarlyView.This review critically examines thermal transport and radiative properties of ultra‐high temperature ceramics for hypersonic flight, advanced nuclear systems, and next‐generation energy conversion devices. It explores phonon–photon–electron interactions, microstructural engineering, thermoelectric conversion, and machine learning‐accelerated multiscale
Zhipeng Pei +8 more
wiley +1 more source