Results 101 to 110 of about 447,422 (304)

Processes, microstructure and properties of vanadium microalloyed steels [PDF]

, 2009
Vanadium as an important alloying element in steels was initially associated with the properties achieved following tempering. Interest in the microstructure was stimulated by the advent of transmission electron microscopes with a resolution of ~1nm ...
Baker, T.N.
core   +1 more source

Influence of an Argon/Silane Atmosphere on the Temperature of a Thermal Plasma

Advanced Engineering Materials, EarlyView.
The influence of a silane‐doped argon atmosphere on the chemical composition and temperature of a thermal nontransferring argon plasma is investigated using optical emission spectroscopy. As a result of the high amount of free electrons resulting from the stepwise ionization and dissociation of the silane molecule, even a silane addition of 0.01 vol ...
Lena Kreie, David Kramer, Thomas Scheithauer, Hans Jürgen Maier, Thomas Hassel   +4 more
wiley   +1 more source

Multiscale understanding of tricalcium silicate hydration reactions [PDF]

, 2017
Tricalcium silicate, the main constituent of Portland cement, hydrates to produce crystalline calcium hydroxide and calcium-silicate-hydrates (C-S-H) nanocrystalline gel. This hydration reaction is poorly understood at the nanoscale.
Cuesta-García, Ana María, Dapiaggi, Monica, García-Aranda, Miguel Ángel, Gómez-de-la-Torre, María de los Ángeles, Londono-Zuluaga, Diana, Sanfélix, Susana G., Santacruz-Cruz, María Isabel, Vallcorba, Oriol, Zea-Garcia, Jesus D.   +8 more
core   +4 more sources

Handbook of Establishing and Maintaining Oxygen‐Free Atmospheres

Advanced Engineering Materials, EarlyView.
This study presents a practical framework for creating oxygen‐free atmospheres at ambient pressure using silane‐doped inert gases. The results show that ultra‐low oxygen levels and strongly reduced water content can be achieved through controlled silane dosing, drying systems, and sensor monitoring.
Sascha Jan Zimmermann, René Gustus, Lienhard Wegewitz, Wolfgang Maus‐Friedrichs   +3 more
wiley   +1 more source

Determination of maximum and minimum void ratios of sands and their influence factors

Yantu gongcheng xuebao, 2018
The mechanical behaviors of sand are heavily dependent on its relative density: the dense sand exhibits softening strength; on the contrary, the loose one displays hardening strength.
LI Shan-shan 1, LI Da-yong 2,1, GAO Yu-feng 3
doaj   +1 more source

Gas turbine performence based creep life estimation using soft computing technique [PDF]

, 2012
Accurate and simple prediction system has become an urgent need in most disciplines. Having the accurate prediction system for gas turbine components will allow the user to produce reliable creep life prediction.
Mohamed Zarti, Almehdi
core  

Oxide‐Free Titanium Coatings by Wire Arc Spraying in a Silane‐Doped Inert Atmosphere

Advanced Engineering Materials, EarlyView.
A silane‐doped argon atmosphere enables the production of oxide‐free titanium coatings via twin‐wire arc spraying at ambient pressure. This innovative approach eliminates residual oxygen, creating process conditions that prevent oxidation and nitride formation.
Manuel Rodriguez Diaz, Maik Szafarska, René Gustus, Kai Möhwald, Hans Jürgen Maier   +4 more
wiley   +1 more source

Distribution, analysis, and recovery of fine gold from alluvial deposits [PDF]

, 1973
The United States Bureau of Mines, in its Heavy Metals Program, desired to have research performed to determine the size-frequency distribution and possible economic value of gold particles in the fine size ranges of Alaskan placer deposits.
Cook, D.J., Rao, P.D.
core  

Enhancing Strength and Electrical Conductivity in Al–Zr–Sc Conductor Alloys Through Sn and Sr Microalloying and Two‐Step Aging Treatment

Advanced Engineering Materials, EarlyView.
Trace additions of Sn and Sr combined with a two‐step aging treatment are shown to enhance the microstructure and performance of Al–Zr–Sc conductor alloys. Strength and electrical conductivity increase concurrently through accelerated precipitation of fine Al3(Sc, Zr) precipitates and improved dislocation resistance, offering a cost‐effective pathway ...
Quan Shao, Emad M. Elgallad, Alexandre Maltais, X.‐Grant Chen   +3 more
wiley   +1 more source

Interface characteristics of geogrid and gravelly soil by pullout tests

Yantu gongcheng xuebao
In the field of roadbed engineering, the reinforced gravelly soil filling materials subjected to long-term upper loads are prone to phenomena such as intrusion of fine particles, leading to the deterioration of the mechanical properties at the ...
WANG Jiaquan 1, 2 , LIN Hong 1, 2, WEI Linyi 1, 2, TANG Yi 1, 2
doaj   +1 more source