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Flow characterization of macroporous W-4.8 vol. %ZrO2 alloy during hot deformation with improved constitutive equation and processing maps
In this work, isothermal compression experiments of macroporous W-4.8 vol.%ZrO 2 (W-4.8ZrO 2 ) at 1300–1600 °C and strain rate of 0.005–1 s −1 were...
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Study on hydrogen adsorption on WO3(001) surface by density functional theory calculation
Hydrogen reduction of tungsten oxide is currently the most widely used technology to produce metal tungsten for its simplicity and pollution-free...
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Tunable Emission and Energy Transfer of the Novel KY1−x(MoO4)2−y(WO4)y:xLn3+ (Ln3+ = Dy3+, Eu3+, and Tm3+) Single-phase White Luminescence Phosphor for White LEDs
The phosphors of KY 1− x (MoO 4 ) 2− y (WO 4 ) y : x Ln 3+ (Ln 3+ = Tm 3+ , Dy 3+ , Eu 3+ ) were synthesized by using a sol-gel method. Then, the crystal structure,...
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Preparation and tribological behavior of TiO2@WO3:Eu3+ powders as lubricant nano-additive for steel-steel contacts
Eu-doped WO 3 (WO 3 :Eu 3+ ) nanoparticles were prepared by the Pechini method. Tetrabutyl titanate (TBOT) was used to prepare TiO 2 -encapsulated WO 3 :Eu 3+ ...
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Preparation of Ultrafine W-10 Wt Pct Cu Composite Powders and Their Corresponding Sintered Compacts
We propose a process to produce ultrafine W-10 wt pct Cu composite powders by reducing the mixtures of copper tungstate (CuWO 4 ) and tungsten trioxide...
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Synthesis and characterization of WS2/SiO2 microfibers
AbstractTungsten disulfide polycrystalline microfibers were successfully synthesized by a process involving electrospinning, calcination, and...
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Properties and microstructure of oxide dispersion strengthened tungsten alloy prepared by liquid-phase method: a review
The addition of the second phase into tungsten can significantly refine the grain size of tungsten alloys, and also play a role in dispersion...
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Effect of pH on the Tribological Behavior of Eu-Doped WO3 Nanoparticle in Water-Based Fluid
AbstractEu-doped WO 3 (WO 3 :Eu 3+ ) nanoparticles were prepared by Pechini method under different pH values (pH 1, 3, 5, and 7). The prepared...
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Hydrometallurgy
Hydrometallurgy refers to the extraction of metals and production of inorganic substances from minerals through aqueous solutions. Although the...
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Purification of a Nigerian Wolframite Ore for Improved Industrial Applications
Increasing demands for pure wolframiteWolframite ore in the form of ammonium paratungstate (APT), tungsten oxide cannot be over emphasized. Thus,...
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Fundamental studies for high temperature processing of tungsten leaching residues for alloy formation
The first step in the production of tungsten is to enrich tungsten from two minerals wolframite ((Fe, Mn)WO 4 ) and scheelite (CaWO 4 ) through the...
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Wear-Resistant Carbon-Fiber-Reinforced Ti-Based Composite Obtained by Laser Metal Deposition
Carbon-fiber-reinforced metal-matrix composites (Ti6Al4V/CFs) were tailored by laser metal deposition. Ti6Al4V/CFs represents a Ti-based matrix,...
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Recovery of Tungsten from Spent V2O5–WO3/TiO2 Catalyst
Currently, spent V2O5–WO3/TiO2TiO catalysts contribute significant amounts of solid waste following increasing levels of global demand....
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Review: Oxygen-deficient tungsten oxides
AbstractOxygen-deficient/non-stoichiometric tungsten oxides are a distinct class between two only stoichiometric tungsten oxides, i.e., WO 3 and WO 2 ....
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Assembly of 1T-WSe2: Sn nanosheets/graphene by a modified hydrothermal process for water splitting
Transition metal dichalcogenides are one category of potential hydrogen evolution catalyst. Their metallic (1T) structure possesses peculiar...
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Microstructure evolutions of the W–TiC composite conducted by dual-effects from thermal shock and He-ion irradiation
Considering that tungsten (W) materials served as the plasma-facing material in the fusion reactor would be exposed to edge-localized modes...
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Ultra-fine W–Y2O3 composite powders prepared by an improved chemical co-precipitation method and its interface structure after spark plasma sintering
Y 2 O 3 -doped tungsten (W–Y 2 O 3 ) composite powders prepared by a traditional chemical co-precipitation method possess obvious bimodal distribution in...
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Enhanced mechanical properties in oxide-dispersion-strengthened alloys achieved via interface segregation of cation dopants
With significantly enhanced irradiation resistance, high-temperature strength, and creep resistance, oxide-dispersion-strengthened tungsten (ODS-W)...
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High Photocatalytic Activity Nanomaterials Based on Titanium Dioxide
Abstract —X-ray diffraction, optical spectroscopy, and electron paramagnetic resonance (EPR) have been used to study microspheres and...
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Synthesis and Characterization of Nanoscale Tungsten Particles with Hollow Superstructure Using Spray Drying Combined with Calcination Process
AbstractNanoscale tungsten (W) powder is used in some special materials. In this study, a hollow superstructure W powder consisting of nanoparticles...
