Results 81 to 90 of about 240,163 (350)
Electrooxidation of Anhydrous Glycerol: Kinetics and Selectivity
ChemElectroChem, EarlyView.This work investigates glycerol electrooxidation in anhydrous conditions to narrow down the range of possible products. Preferential oxidation of glycerol to glyceraldehyde was achieved via homogeneous but not heterogeneous catalytic pathways. Further improvements in the redox mediator and catalyst design are needed to improve the performance.As a by ...
Laela Ezra +4 more
wiley +1 more source
Optimization of a Welding Procedure for Making Critical Aluminum Welds on the LBNF Absorber Core Block [PDF]
JACoW IPAC2024 (2024) TUPS43The LBNF Absorber consists of thirteen 6061-T6 aluminum core blocks. The core blocks are water cooled with de-ionized (DI) water which becomes radioactive during beam operations. The cooling water flows through gun-drilled channels in the core blocks.
arxiv +1 more source
Precipitate stability and recrystallisation in the weld nuggets of friction stir welded Al-Mg-Si and Al-Mg-Sc alloys [PDF]
Materials Science and Engineering A 491 (2008) 364, 2008 Two different precipitate hardening aluminium alloys processed by friction stir welding were investigated. The microstructure and the hardness of the as delivered materials were compared to that of the weld nugget. Transmission electron microscopy observations combined with three-dimensional atom probe analyses clearly show that \beta;" precipitates ...
arxiv +1 more source
Welding torch gas cup extension [PDF]
, 1988 The invention relates to a gas shielded electric arc welding torch having a detachable gas cup extension which may be of any desired configuration or length. The gas cup extension assembly is mounted on a standard electric welding torch gas cup to enable
Gordon, Stephen S.
core +1 more source
Novel Microwave Plasma Source for Plasma Chemistry in Gases
Chemie Ingenieur Technik, EarlyView.A new microwave plasma source for plasma gas chemistry is introduced. Microwave energy is specifically coupled into defined gas volumes to activate chemically internal compounds such as N2, CO2 or H2O. The activation of N2 and the conversion of CO2 to CO are given as examples.
Andreas Schulz +6 more
wiley +1 more source
Environmental Health Insights, 2014 A group of stainless steel arc welding processes was compared for emission rates of fume and hexavalent chromium, and costs per meter length of weld.
Michael J. Keane
doaj +1 more source
Advancing aqueous zinc‐ion batteries with carbon dots: A comprehensive review
EcoEnergy, EarlyView.Carbon dots (CDs), with their distinctive structure and superior electrochemical properties, represent an innovative class of carbon‐based materials with broad potential applications for optimizing aqueous zinc‐ion batteries (AZIBs) performance. This comprehensive review highlights the potential application of CDs in AZIBs.
Mingying Chen +7 more
wiley +1 more source
A Testbed for Investigation of Selective Laser Melting at Elevated Atmospheric Pressure [PDF]
arXiv, 2021 Metal additive manufacturing (AM) by laser powder bed fusion (L-PBF) builds upon fundamentals established in the field of laser welding which include the influence of gas and plume dynamics on weld depth and quality. L-PBF demands a thorough investigation of the complex thermophysical phenomena that occur where the laser interacts with the metal powder
arxiv
EFFECT OF WELDING PROCESS PARAMETERS ON TENSILE OF LOW CARBON STEEL 283 G.C
Journal of Engineering and Sustainable Development, 2022 In this study, three welding methods are used. The purpose to investigation the effects of SMAW, SAW, and gas tungsten arc welding (GTAW) on the tensile stress of low carbon steel conforming to ASTM 283 c.
Hussain Hayyal, Nadhim M. Faleh
doaj +1 more source
GMAW metal transfer mode identification from welding sound [PDF]
, 2019 © 2019 Australian Acoustical Society Annual Conference, AAS 2018. All rights reserved. Gas Metal Arc Welding (GMAW) is an arc welding process that forms an electric arc between a consumable electrode and the base metal with a shielding gas to protect the
Burnett, I +4 more
core