Results 61 to 70 of about 1,808 (225)

A Reliability Study of Phased Array Ultrasonic Inspections Applied to Aluminothermic Welds in Rails [PDF]

, 2017
Nowadays, long welded railway rails are achieved by means of aluminothermic and flush-butt welding processes. Compared to bolted joints, welds proved to be effective in terms of reduced wheel damage, ride comfort and maintenance.
Carboni, M., Gianneo, A.
core  

Application possibility of arc welding processes for long butt joint of 75Mn steel plates without preheating

The Journal of Engineering, Volume 2025, Issue 1, January/December 2025.
An arc welding process for long butt joint of high carbon −75Mn steel plates without preheating was selected, assuring quality of weld and productivity. Abstract In order to ensure the stability of the track mechanical device, this paper solves the problem of attaching the lock flange to the side of the rail.
Yong‐Il Jon, Won‐Chol Son, Hyon‐Jong Kim, Yong‐Gwang Jong   +3 more
wiley   +1 more source

Thermodynamic Assessment of Reactions in the Sodium-Oxide Fluxed Aluminothermic Reduction of Manganese Ore with Si, Cr, and Cu Collector Metals

Crystals
This study investigates the reaction thermodynamics of the sodium oxide-fluxed aluminothermic reduction of pyrolusite-based manganese ore under self-propagating high-temperature synthesis (SHS) conditions, using Si, Cr, and Cu as collector metals.
Theresa Coetsee, Frederik De Bruin
doaj   +1 more source

Study of the aluminothermic reduction of niobium pentoxide through thermal analysis experiments and high energy milling processing

Materials Research, 2007
Aluminothermic reduction of niobium pentoxide was studied through thermal analysis techniques such as differential thermal analysis (DTA) and thermogravimetry (TG) as well as through high energy milling processing.
Claudio Parra De Lazzari, Danielle Goya Simões, José Deodoro Trani Capocchi   +2 more
doaj   +1 more source

Noble‐Metal‐Free Modified TiO2 Nanotube Arrays (TNTAs) for Efficient Photocatalytic Reduction of CO2 to CO Under Visible Light

ChemistrySelect, Volume 9, Issue 44, November 25, 2024.
Three noble‐metal‐free materials of graphitic carbon nitrides, metal–organic framework, and reduced graphene oxide were used for modifying pure TiO2 nanotube arrays (TNTAs). The modified TNTAs were tested for photocatalytic CO2 reduction to CO. TNTAs modified with graphitic carbon nitrides displayed the highest results.
Riyadh Ramadhan Ikreedeegh, Md. Arif Hossen, Muhammad Tahir   +2 more
wiley   +1 more source

Novel Approach to Prepare Magnesium and Mg-Al Alloy from Magnesia by Using the Closed Microwave Aluminothermic Method

Metals, 2023
Herein, we report a novel approach to obtaining magnesium and nanocrystal Mg-Al alloy from magnesia using a closed microwave aluminothermic method in order to solve the problems of high energy consumption, high pollution, and low productivity in the ...
Teng Zhang, Miao Wang, Libin Niu, Jumei Zhang, Huihui Zhang, Mengchun Zhang   +5 more
doaj   +1 more source

Synthesis and physical properties of (Zr1−x,Tix)3AlC2MAX phases [PDF]

, 2017
MAX phase solid solutions physical and mechanical properties may be tuned via changes in composition, giving them a range of possible technical applications.
Ali, Anasori, Barsoum, Barsoum, Barsoum, Barsoum, Bei, Bragg-Sitton, Cabioc'h, Dubois, Gao, Glazov, Gou, Gua, Hadi, Han, Hoffman, Horlait, Horlait, Horlait, Jackson, Jiao, Lapauw, Lapauw, Lapauw, Lin, Liu, Meng, Middleburgh, Monkhorst, Mulliken, Murphy, Nowotny, Perdew, Pfrommer, Roisnel, Sanchez-Portal, Segall, Szymański, Tallman, Tromas, Tzenov, Vanderbilt, Vegard, Wang, Westbrook, Xu, Yeh, Yeh, Yu, Zapata-Solvas, Zhou, Zhou, Zhu   +53 more
core   +2 more sources

Solar Cells on Multicrystalline Silicon Thin Films Converted from Low‐Cost Soda‐Lime Glass

Advanced Materials Interfaces, Volume 11, Issue 28, October 4, 2024.
Multicrystalline silicon thin films from synthesized low‐cost soda‐lime glass (SLG) using aluminothermic reduction at 600 – 650 °C show moderate p‐type doping of ≈1 × 1017 cm−3. Heterojunction solar cells exhibit an open‐circuit voltage of 426 mV, a short‐circuit current density of 7.29 mA cm−2, a fill factor of 52.3%, and a conversion efficiency of 1 ...
Ingrid Schall, Guobin Jia, Uwe Brückner, Annett Gawlik, Christian Strelow, Jan Krügener, Ditian Tan, Michael Fahrbach, Stefan G. Ebbinghaus, Jonathan Plentz, Erwin Peiner   +10 more
wiley   +1 more source

Teaching-learning methodologies: use of blended learning in chemistry laboratory [PDF]

, 2014
For a proper teaching-learning environment in the European Higher Education Area (EHEA) it is mandatory to follow an integral educational program that considers the presential and non-presential activities as a whole, in the understanding of the utmost ...
Molina Jordá, José Miguel, Sánchez-Adsuar, María Salvadora   +1 more
core  

Structural and electronic properties of the graphene/Al/Ni(111) intercalation-like system

, 2011
Decoupling of the graphene layer from the ferromagnetic substrate via intercalation of sp metal has recently been proposed as an effective way to realize single-layer graphene-based spin-filter.
Boettcher, S., Dedkov, Yu. S., Generalov, A., Horn, K., Voloshina, E. N., Weser, M.   +5 more
core   +1 more source