Results 31 to 40 of about 1,808 (225)
The effect of white etching layer patches on a larger rail defect [PDF]
, 2017 Manufacturing defects such as porosity that formed in the rail could result in catastrophic failure if it remain in service. In this study, a crack that initiated from a large void was modelled using boundary element model to investigate the effect of ...
Cannon +8 more
core +3 more sources
Evidence of cross-cutting and redox reaction in Khatyrka meteorite reveals metallic-Al minerals formed in outer space [PDF]
, 2017 We report on a fragment of the quasicrystal-bearing CV3 carbonaceous chondrite Khatyrka recovered from fine-grained, clay-rich sediments in the Koryak Mountains, Chukotka (Russia).
Andronicos, Christopher L. +6 more
core +2 more sources
Aluminothermic Reduction of Titanium Oxide
Materials Transactions, JIM, 1993 Titanium is produced conventionally by a chloride based technique, the Kroll method, but chlorination in this production process is complicated and costly. Hence, in order to find a much simpler and less costly method, the possibility of developing a less expensive means of producing titanium has been examined using a combination of aluminothermic ...
Masafumi Maeda +3 more
openaire +2 more sources
Formation of silicon layer through aluminothermic reduction of quartz substrates
Frontiers in Materials, 2022 Silicon (Si) films were obtained through aluminothermic reduction of the quartz (SiO2) substrates, where the surface of the quartz in contact with the deposited aluminum (Al) layer has been converted to film Si during high-temperature annealing following
Muhammad Monirul Islam +4 more
doaj +1 more source
CrystalsAluminothermic reduction is gaining renewed interest as an alternative processing route for the circular economy. A unique Na2O-fluxed MnO2 ore formulation with a small quantity of carbon reductant was applied to ensure rapid pre-reduction to MnO.
Theresa Coetsee, Frederik De Bruin
doaj +1 more source
Nanotechnology Reviews, 2023 CuW composite fabricated by powder metallurgy using ultrafine metal powders as raw materials has the disadvantages such as uneven microstructure and low compactness.
Cheng Chu +8 more
doaj +1 more source
Nanoenergetic Materials for MEMS: A Review [PDF]
, 2007 New energetic materials (EMs) are the key to great advances in microscale energy-demanding systems as actuation part, igniter, propulsion unit, and power.
Alphonse, Pierre +5 more
core +2 more sources
Mab Phase-Alumina Composite Formation Via Aluminothermic Exchange Reactions
Materials Letters, 2023 The formation of MAB phase-alumina composites through aluminothermic exchange reactions using M-element (Fe, Mn, Cr, Mo, W) oxides has been investigated for the MAB phases Fe2AlB2, Mn2AlB2, Cr2AlB2, MoAlB, and WAlB for the first time. With the exception of WAlB, all systems formed MAB phase and alumina as major phases, with binary M-element borides ...
Jessica Merz +2 more
openaire +1 more source
Mokslas: Lietuvos Ateitis, 2013 This article is about the aluminothermic welding quality ofrail joints, using different parameters. The thermit portion andpreheat time estimated for quality of welded joints as well asthe mechanical characteristics of aluminothermic welds in railshave ...
Mindaugas Rauduvė, Vitalijus Rudzinskas
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Mokslas: Lietuvos Ateitis, 2012 The article describes inherent defects to aluminothermic welds, the origin of reasons and the ways of avoidance. The paper presents visual surface and fracture testing of rail joint R65 applying the method of aluminothermic welded joints. Santrauka
Aistė Šimonėlytė +2 more
doaj +1 more source