Results 41 to 50 of about 93,113 (262)

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

Advanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios, Anthony Gonzalez, Aleksander Aleman, Tyler Dolmetsch, Tanaji Paul, Arvind Agarwal   +5 more
wiley   +1 more source

Estimation of Binary Infinite Dilute Diffusion Coefficient Using Artificial Neural Network

Journal of Chemical and Petroleum Engineering, 2014
In this study, the use of the three-layer feed forward neural network has been investigated for estimating of infinite dilute diffusion coefficient ( D12 ) of supercritical fluid (SCF), liquid and gas binary systems. Infinite dilute diffusion coefficient
Majid Mohadesi, Gholamreza Morad, Hosnie-Sadat Mousavi   +2 more
doaj   +1 more source

Measurement Technique of Oxygen Diffusion Resistance through Gas Diffusion Layer [PDF]

ECS Transactions, 2013
It is important to measure the oxygen diffusion resistance of both gas diffusion layers (GDLs) and catalyst layers (CLs) to improve the performance of polymer electrolyte fuel cells. In this study, we develop a technique to measure oxygen diffusion resistance with high precision. The technique uses an oxygen sensor and zinc-air batteries, which enhance
Hironori Ohira, Katsuhide Kikuchi, Atsushi Ida, Joji Tomiyasu, Atsushi Yamamoto   +4 more
openaire   +1 more source

Electrochemical Behavior of Flame‐Sprayed Sc‐Doped AlCoCrFeMo High‐Entropy Alloy Coatings in 3.5% Sodium Chloride Solution

Advanced Engineering Materials, EarlyView.
Scandium (Sc)‐doped AlCoCrFeMo HEA coatings are fabricated via flame spraying with 0.1, 0.3, and 0.5 wt% Sc additions. Among these, the HEA‐Sc0.3 coating exhibits the highest corrosion resistance, indicated by a more positive corrosion potential and lower current density.
Pankaj Kumar, Akash Vyas, Mohammad Aatif Qazi, Nashit Jalal, Maria Ophelia Jarligo, Mostafa Yakout, Jing Liu, André McDonald   +7 more
wiley   +1 more source

Numerical investigation of heat and mass transfer processes in a spherical layer of viscous incompressible liquid with free boundaries

MATEC Web of Conferences, 2016
The results of mathematical modelling of the dynamics of a mixture of the viscous incompressible liquid and gas, which fills a spherical layer with free boundaries and contains a gas bubble within itself, are presented in this paper.
Zakurdaeva Alia
doaj   +1 more source

Inverse Identification of Energy‐Dependent Laser Absorptivity in NiTi Laser Powder‐Bed Fusion via Calibrated Melt Pool Simulation

Advanced Engineering Materials, EarlyView.
A combined experimental–computational framework identifies energy‐dependent laser absorptivity for NiTi in laser powder‐bed fusion, applicable to conduction and transition modes. Single‐track experiments and thermofluid smoothed particle hydrodynamics simulations are coupled through inverse analysis of melt pool geometry.
Mohamadreza Afrasiabi, Hadi Moutablaleh, Ignatius A. Setiawan, Mehrshad Mehrpouya   +3 more
wiley   +1 more source

Measuring Gas Diffusivity of Partially Water-Saturated Gas Diffusion Layers

Journal of The Electrochemical Society
At high current densities, proton exchange membrane fuel cells produce more water, increasing the saturation level of the gas diffusion layer (GDL) and hence lowering reactant gas diffusivity. Few studies have measured the gas diffusivity of partially water-saturated GDLs due to the complexity of controlling saturation levels.
Amin Mohammadi, Claire McCague, Esmaeil N. Alvar, Pascal Kim, Majid Bahrami   +4 more
openaire   +1 more source

Influence of Scan Strategies in Electron Beam Powder Bed Fusion on Solidification, Microstructure, and High‐Temperature Compressive Properties of γ′‐Strengthened Inconel 738LC

Advanced Engineering Materials, EarlyView.
Experiments and thermophysical simulations were conducted to investigate the electron beam powder bed fusion electron beam (PBF‐EB/M) process for the γ′‐strengthened nickel‐based superalloy Inconel 738LC. The results demonstrate the impact of process‐induced microstructural variations on high‐temperature mechanical behavior, providing a basis for ...
Jan Niklas Petenati, Karthik Kumar Banku, Prasanth Bondi, Ivan Zhirnov, Yangyiwei Yang, Gordon Schmidt, Jürgen Christen, Georg Hasemann, Manja Krüger, Bai‐Xiang Xu, Bilal Gökce, Silja‐Katharina Rittinghaus   +11 more
wiley   +1 more source

Method to Study Water Diffusion into Polymers

Proceedings, 2018
We designed and realized a low cost relative humidity (RH) capacitive sensor having an interdigitated transducer coated with a cheap sensing material working at room temperature (polyimide).
Jamila Boudaden, Matthias Steinmaßl, Hanns-Erik Endres, Peter Müller-Buschbaum   +3 more
doaj   +1 more source

Study on Flow Model and Flow Equation of Shale Gas Based on Microflow Mechanism

Geofluids, 2022
Shale gas storage and permeability space is between nanometers and micrometers and has strong multiscale characteristics, resulting in highly complicated shale gas flow.
Huaxun Liu, Shusheng Gao, Feifei Fang, Chunyan Jiao, Liyou Ye, Jie Zhang, Weiguo An   +6 more
doaj   +1 more source