Results 61 to 70 of about 86,200 (263)

Al–Cu Composite Casting of Laser‐Deoxidized Copper: Bonding, Interfacial Chemistry, and Thermal Conductivity

Advanced Engineering Materials, EarlyView.
This study investigates laser‐based oxide removal of Cu inserts in oxygen‐free conditions and examines long‐term oxidation kinetics and surface chemistry under different atmospheres via X‐ray photoelectron spectroscopy. Al–Cu compound casting with differently oxidized surfaces is performed, and intermetallic phase formation, morphology, and thermal ...
Timon Steinhoff, Finn‐Lennard Janthur, Sascha Zimmermann, Sarah Seffer, Jörg Hermsdorf, René Gustus, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Christian Klose   +9 more
wiley   +1 more source

Assessing Altered Coating Adhesion on Plasma‐Deoxidized Surfaces Under Oxygen‐Free Conditions

Advanced Engineering Materials, EarlyView.
This study demonstrates the effectiveness of atmospheric pressure plasma pretreatment in modifying silicon and stainless steel surfaces to improve adhesion. Argon‐hydrogen plasma increases surface roughness and improves adhesion strength, whereas pure argon results in smoother surfaces and structural changes.
Selina Raumel, Lara Kuhr, Khemais Barienti, Sebastian Herbst, Florian Nürnberger, Hans Jürgen Maier, Marc C. Wurz   +6 more
wiley   +1 more source

Investigation and optimization of a PEM fuel cell’s electrical and mechanical behavior [PDF]

Hydrogen, Fuel Cell & Energy Storage, 2016
Effect of clamping pressure on electrical resistance between Gas diffusion layer (GDL) and bipolar plate is a very important parameter in Proton exchange membrane (PEM) fuel cells.
Mostafa Habibnia, Mohsen Shakeri, Salman Nourouzi, Peyman Ghasemi Tamami   +3 more
doaj   +1 more source

Reduction in Fabrication Costs of Gas Diffusion Layers [PDF]

, 2012
Ballard Material Products (BMP) performed a pre-design technical and cost analysis of state of the art production technologies feasible for high volume GDL manufacturing. Based upon criteria that also included environmental health and safety, customer quality requirements, and future needs, BMP selected technologies that can be integrated into its ...
Morgan, Jason, Connors, Donald, Hickner, Michael   +2 more
openaire   +2 more sources

Nonthermal Plasma Reduction of Nickel Oxide Layers by Atmospheric Pressure Dielectric Barrier Discharge in Argon/Hydrogen

Advanced Engineering Materials, EarlyView.
This work explores the reduction of nickel oxide layers using dielectric barrier discharge plasma in an argon–hydrogen atmosphere. The results reveal a strong temperature dependence, enabling complete reduction of thick oxide layers at 200°C within seconds.
Maria Argirusi, Viktor Udachin, Sascha Jan Zimmermann, Alexander Tillmanns, Lienhard Wegewitz, Wolfgang Maus‐Friedrichs   +5 more
wiley   +1 more source

Productivity‐Driven Optimization of Laser Powder Bed Fusion Parameters for IN718 Superalloy: Process Control, Microstructure, and Mechanical Properties

Advanced Engineering Materials, EarlyView.
This study demonstrates how optimizing laser power, scanning speed, and hatching distance in laser powder bed fusion can boost the productivity of Inconel 718 manufacturing by up to 29% while maintaining mechanical integrity. The work delivers a validated process window and cost–time analysis, offering industry‐ready guidelines for efficient additive ...
Amir Behjat, Guido Barale, John Stavridis, Ehsan Norouzi, Jin‐Yoo Suh, Dong‐Ik Kim, Luca Iuliano, Abdollah Saboori   +7 more
wiley   +1 more source

Impact of gas diffusion layer architecture on the performances of Cu-based electrodes for CO2 electroreduction to ethylene in flow reactors

Journal of CO2 Utilization
Electrocatalytic CO2 reduction reaction (CO2RR) is a promising strategy to convert CO2 into fuels and building blocks for chemicals, exploiting renewable energy sources.
Marco Etzi, Julien Dangbegnon, Angelica Chiodoni, Candido F. Pirri   +3 more
doaj   +1 more source

Development of portable DMFC system with low water crossover MEA

Nihon Kikai Gakkai ronbunshu, 2014
This paper describes inner-water circulation DMFC (Direct Methanol Fuel Cell) system with low water cross-over MEA (Membrane Electrode Assembly). Water permeation controlled layer which has lower permeability (K~10 -14 m 2) than conventional micro porous
Ryosuke YAGI, Yuusuke SATO, Masato AKITA, Takuya HONGO, Norihiro TOMIMATSU   +4 more
doaj   +1 more source

Depth profiling analysis of the nitriding layer formed by gas nitriding of Ti13Nb13Zr alloy

Materials Research Express, 2023
The gas nitriding of Ti13Nb13Zr alloy was performed in a pure nitrogen atmosphere at 1200 °C with different holding times. The variations in the phase constituents, microstructure, and mechanical properties of the nitriding layer with depth were ...
Xiaolei Sun, Hanke Song, Yong Luo
doaj   +1 more source

Resistance Rapid Heating of Aluminum Coatings in an Extreme High Vacuum–Adequate Atmosphere for Hot Stamping

Advanced Engineering Materials, EarlyView.
The subject of this work is the development of a corrosion‐protective coating on steel sheets for form hardening. Rapid heating in an extreme high vacuum (XHV)‐adequate atmosphere is a useful method to prevent oxidation during alloying of 22MnB5 and aluminum to obtain a metallurgical bonding.
Lorenz Albracht, Alexander Schnettger, Ulrich Holländer, Sven Hübner, Bernd‐Arno Behrens, Hans Jürgen Maier   +5 more
wiley   +1 more source