Results 71 to 80 of about 4,678 (231)

Unconventional synthesis of novel borides: interplay between crystal structures, magnetic and catalytic properties

open access: yes, 2022
Borides are technologically-important materials in various fields. However, the synthesis of novel alkali metal-transition metal-borides is challenging due to the enormous difference in reactivity and melting and boiling points of the precursor elements,
Bhaskar, Gourab
core   +2 more sources

Nanomaterials‐Decorated Biomass‐Derived Carbon for Overall Water Splitting: Interfacial Engineering, Mechanistic Insights, and Device Translation

open access: yesThe Chemical Record, EarlyView.
Biomass‐derived carbon provides a sustainable, porous, and conductive scaffold that stabilizes nanomaterials for bifunctional hydrogen evolution reaction/oxygen evolution reaction catalysis. This review summarizes design strategies (defects, heteroatom doping, heterostructures, single atoms), mechanistic/density functional theory insights, degradation ...
Paricha Jebin   +8 more
wiley   +1 more source

Spin polarized DFT calculations of metal borides

open access: yes, 2014
The metal borides, in particular the diborides and hexaborides, contain stoichiometric forms that include insulators, semiconductors and superconductors.
Mackinnon, Ian D. R.   +2 more
core  

Ablation Properties of HfC–SiC–WC Ultra‐High Temperature Ceramics Produced by Pressureless Sintering

open access: yesInternational Journal of Ceramic Engineering &Science, Volume 8, Issue 4, July 2026.
Schematic diagram highlighting the processes that occur during ablation testing of HfC–SiC and HfC–SiC–WC. ABSTRACT HfC–SiC is one of the leading thermal insulation ceramics that has the potential to perform well under high thermomechanical loads. In this study, we explore the use of pressureless sintering to produce this material at relatively low ...
C. Doolittle   +8 more
wiley   +1 more source

The role of autogenic halide gas in the production of metal borides

open access: yes, 2014
Synthesis of metal borides is typically undertaken at high temperature using direct combinations of elemental starting materials[1]. Techniques include carbothermal reduction using elemental carbon, metals, metal oxides and B2O3[2] or reaction between ...
Alarco, Jose   +2 more
core  

Effect of Boron Content and Cooling Rate on the Microstructure and Boride Formation of β-Solidifying γ-TiAl TNM Alloy

open access: yesMetals, 2020
Boron is a unique and popular grain refiner element in cast titanium aluminide (TiAl) alloys, as it helps to improve mechanical properties if properly alloyed.
Daniel Bernal   +3 more
doaj   +1 more source

Constructing Cu/Cu2O Heterogeneous Interface for Efficient Urea Electrosynthesis

open access: yesENERGY &ENVIRONMENTAL MATERIALS, Volume 9, Issue 4, July 2026.
In this study, a Cu/Cu2O heterogeneous interface with dual active sites is prepared for electrocatalytic CO2 and NO3− coupling to urea. The catalyst shows high yield rates of 1156.63 mmol g−1 h−1 and FE of 29.67% at −1.0 V (vs RHE), which is significantly higher than Cu and Cu2O, highlighting the advantages of heterogeneous interface synergistic ...
Jiani Liu   +7 more
wiley   +1 more source

Boride layers on high-carbon high-chromium tool steels: Microstructure-mechanical properties relationship

open access: yesJournal of Materials Research and Technology
High-carbon high-alloyed steels (Sleipner, K 190, Sverker 21, Sverker 3) were boronised at 1323 K for 10 h. The layers that developed were composed of FeB and Fe2B phases.
Peter Jurči   +4 more
doaj   +1 more source

Thermal and Photocatalytic Conversion of CO2 to Ethanol: Advances in Catalyst Design, Challenges, and Opportunities

open access: yesChemSusChem, Volume 19, Issue 12, 26 June 2026.
This review examines thermo‐ and photocatalytic routes for converting CO2 to ethanol and analyzes how metal alloying, promoters, supports, surface structure, and semiconductor design govern catalyst activity, selectivity, and stability. It integrates mechanistic insights from experimental and theoretical studies and identifies the main challenges and ...
Bryan Rocano‐Merchan   +7 more
wiley   +1 more source

Synthesis of TiB2 powders by borothermal and carbothermal reduction of TiO2 [PDF]

open access: yesProcessing and Application of Ceramics
Titanium diboride powders were synthesized from TiO2 following different reduction methods at temperatures range from 1000 to 1400°C for 1h under flowing argon gas.
Abdelgawad Mohamed Mahrous Hussein   +1 more
doaj   +1 more source

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