Results 41 to 50 of about 21,323 (161)

Nanoparticles (NPs) of WO3-x Compounds by Polyol Route with Enhanced Photochromic Properties

open access: yesNanomaterials, 2019
Tungsten trioxide (WO3) is well-known as one of the most promising chromogenic compounds. It has a drastic change of coloration induced from different external stimuli and so its applications are developed as gas sensors, electrochromic panels or ...
Marie Bourdin   +6 more
doaj   +1 more source

Complex chemistry with complex compounds

open access: yesEPJ Web of Conferences, 2016
In recent years gas-phase chemical studies assisted by physical pre-separation allowed for the investigation of fragile single molecular species by gas-phase chromatography.
Eichler Robert   +51 more
doaj   +1 more source

The use of sodium polytungstate as an X-ray contrast agent to reduce the beam hardening artifact in hydrological laboratory experiments

open access: yesJournal of Hydrology and Hydromechanics, 2013
Iodine is conventionally used as a contrast agent in hydrological laboratory experiments using polychromatic X-ray computed tomography (CT) to monitor two-phase Darcy flow in porous geological media.
Nakashima Yoshito
doaj   +1 more source

RECEIVING OF MOLYBDENUM AND TUNGSTEN POWDERS WITH ALUMINOTHERMY, THEIR COMPOUNDS IN THE ALLOY OF SODIUM CHLORIDE

open access: yesЛитьë и металлургия, 2012
This work studies the conditions for obtaining finely dispersed powders of molybdenum and tungsten by restoration of their oxygen compounds by aluminum in molten sodium chloride.
V. V. Gostishchev   +7 more
doaj  

Fabrication and mechanical properties of gradient-structured W–Ni–Fe–Mo/Co tungsten heavy alloys

open access: yesFenmo yejin jishu
Gradient-structured tungsten heavy alloys with spatially graded mechanical properties can effectively resolve the strength-ductility trade-off in conventional homogeneous tungsten alloys. The high-strength 93W–Ni–Fe–Mo alloys and high-ductility 90W–Ni–Fe–
MENG Ziqi   +6 more
doaj   +1 more source

Enrichment of W2B5 from WO3 and B2O3 by Double SHS Method

open access: yesMedžiagotyra, 2018
A second self-propagating high-temperature synthesis (SHS) was carried out to enrich the W2B5 content in the SHS product containing a mixture of various tungsten boride compounds.
Bora DERIN, Sertac YAZICI
doaj   +1 more source

A Study of certain Tungsten Compounds.

open access: yes, 1876
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +1 more source

Effects of Grain Boundary Microconstituents on Heat-Affected Zone Cracks in a Mar-M004 Weldment

open access: yesMetals, 2018
Repair-welding of a cast Mar-M004 superalloy by gas tungsten arc welding was performed. Liquation cracks of the heat-affected zone (HAZ) in a Mar-M004 weldment were closely related to the presence of low-melting constituents along the solidified ...
Tai-Cheng Chen   +3 more
doaj   +1 more source

Low-Valent Tungsten Catalyzed Carbonylative Synthesis of Benzoates from Aryl Iodides and Alcohols

open access: yesMolecules
Non-noble metals catalyzed carbonylative reactions serve as straightforward and sustainable methods for the synthesis of functionalized carbonyl-containing compounds.
Feihua Ye   +6 more
doaj   +1 more source

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