Results 21 to 30 of about 1,916 (229)

Borated graphite cathodes for low-temperature aluminum electrolysis

open access: yesChimica Techno Acta, 2022
Electrochemical boriding of the graphite plates in the potassium cryolite based electrolytes was studied. The boriding were carried out in a cell with vertical electrodes. The procedure included 2 stages: 1) electrolysis in the KF–AlF3–KBF4 melt (CR=1.3)
A. V. Rudenko   +3 more
doaj   +1 more source

Characterization and wear performance of boride phases over tool steel substrates [PDF]

open access: yes, 2016
This research work was conducted to characterize boride phases, obtained from the powder-pack process, on AISI H13 and D2 steel substrates, and investigate their tribological behavior.
Bernal Ponce, J.L.   +6 more
core   +1 more source

Nanodispersed boriding of titanium alloy

open access: yesTrudy Odesskogo Politehničeskogo Universiteta, 2015
The problem of improving the operational reliability of machines is becoming increasingly important due to the increased mechanical, thermal and other loads on the details.
Kateryna O. Kostyk, Viktoriya O. Kostyk
doaj   +1 more source

Luminescent Donor‐Acceptor Radical With Propeller Chirality: Bright and Photostable Red Circularly Polarized Luminescence and Whispering Gallery Mode Resonance

open access: yesAngewandte Chemie, EarlyView.
A series of donor‐attached brominated chiral luminescent radicals (CzTTBrM, 2CzTTBrM, and 3CzTTBrM) was synthesized, showing red to near‐infrared (NIR) circularly polarized luminescence (CPL) with exceptionally high PLQY of up to 76% and markedly enhanced CPL brightness (BCPL). Doping into polystyrene microspheres further yields whispering gallery mode
Kazuhiro Nakamura   +14 more
wiley   +2 more sources

Effect of Antagonistic Binder–Catalyst Interactions on Catalytic Activity in Lithium–Sulfur Batteries

open access: yesAngewandte Chemie, EarlyView.
The binder is shown to interact antagonistically with the catalyst in a sulfur cathode, impeding Li2Sx adsorption onto catalytic active sites. This hinders electrochemical performance and prevents the effective deployment of catalysts. This study showcases catalyst‐binder compatibility as a key parameter for cathode design in lithium‐sulfur (Li‐S ...
Kameron Liao   +2 more
wiley   +2 more sources

Evaluation of Wear Resistance of AISI L6 and 5140 Steels after Surface Hardening with Boron and Copper

open access: yesLubricants, 2023
(1) Background: Boriding is one of the most common methods of thermal-chemical treatment due to its excellent hardness and wear resistance of the produced diffusion layers. However, it has limited application compared to carburizing and nitriding because
Stepan Lysykh   +4 more
doaj   +1 more source

Room‐Temperature Gas‐Phase CO2‐to‐C3 Coupling by a 4f‐Aromatic Cluster

open access: yesAngewandte Chemie, EarlyView.
We engineered a 4f metalla aromatic cluster, PrB2C2−, that enables efficient sequential C−C coupling with CO2 at room temperature, yielding a linear C3 backbone. This system provides a complete theoretical catalytic cycle and establishes a new design principle for lanthanide mediated CO2 activation.
Feng‐Xiang Zhang   +7 more
wiley   +2 more sources

Boriding kinetics of Fe2B layers formed on AISI 1045 steel [PDF]

open access: yesJournal of Mining and Metallurgy. Section B: Metallurgy, 2014
In the present work, a diffusion model was suggested to study the growth kinetics of Fe2B layers grown on the AISI 1045 steel by the pack-boriding treatment.
Zuno-Silva J.   +6 more
doaj   +1 more source

Alkali Metal Borides

open access: yes, 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

Principles and applications of CVD powder technology [PDF]

open access: yes, 2006
Chemical vapor deposition (CVD) is an important technique for surface modification of powders through either grafting or deposition of films and coatings.
Angelopoulos, George N.   +3 more
core   +3 more sources

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