Results 81 to 90 of about 447,549 (300)
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 +3 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.High‐temperature interactions between low‐sulfur Al‐killed Mn–B steel and MgO–C refractories (0 and 50 wt% recyclates) are studied via finger immersion tests (1600 °C). Surface‐active elements influence infiltration. MgO/CaS layer forms, along with spinel and calcium silicate.
Matheus Roberto Bellé +5 more
wiley +1 more source
Отримання комплексних дифузійних шарів з використанням композиційних насичуючих середовищ [PDF]
, 2019 The process of obtaining aluminum, titanium, siliconized, nickel layers is an effective method to increase the reliability and durability of machine parts, tools by creating protective layers on the surface of workpieces with a unique set of physic ...
Goranskiy, Georgy Georgievich +2 more
core
Minimum Dust Abundances for Planetesimal Formation via Secular Gravitational Instabilities
, 2012 We estimate minimum dust abundances required for secular gravitational instability (SGI) to operate at the midplane dust layer of protoplanetary disks.
Ida, Shigeru, Takeuchi, Taku
core +1 more source
Advanced Engineering Materials, EarlyView.The thermal diffusivity of MgO‐C refractories is highly sensitive to sample preparation and processing procedures. In this article, the effects of coking sequence, machining conditions, structural inhomogeneity, and graphite coating application on measurements using laser flash apparatus are systematically investigated.
Luyao Pan +4 more
wiley +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 +4 more
doaj +1 more source
CVD aluminiding process for producing a modified platinum aluminide bond coat for improved high temperature performance [PDF]
, 2003 A method of depositing by chemical vapor deposition a modified platinum aluminide diffusion coating onto a superalloy substrate comprising the steps of applying a layer of a platinum group metal to the superalloy substrate; passing an externally ...
Nagaraj, Bangalore A. +1 more
core +1 more source
Advanced Engineering Materials, EarlyView.This study investigates the tribological response of 60NiTi alloy under dry, water‐lubricated and high‐temperature conditions. The alloy exhibits decreasing wear volume and friction with increasing temperature due to the formation of protective oxide layers. The work clarifies dominant wear mechanisms and demonstrates the suitability of 60NiTi for high‐
Anthony Onyebuchi Okoani +2 more
wiley +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
Through-plane water distribution in a polymer electrolyte fuel cell: Comparison of numerical prediction with neutron radiography data [PDF]
, 2010 A multidimensional mathematical model is presented for simulating the coupled phenomena of gaseous fuel/reactant flows, species (including liquid water) transport, heat transfer, hydrogen oxidation, and oxygen reduction reactions in a polymer electrolyte
Chen, KS, Wang, Y
core +1 more source