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Nanostructured Sintered WC–Co Hard Metals (Review)
Production processes for fine powders of tungsten, tungsten carbide, and WC–Co and sintering methods for nanosized WC–Co hard metals are reviewed....
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Structural, Morphological, Vibrational, and Photoluminescence Study of Sol–Gel-Synthesized Tm3+:NaGd(WO4)2 Blue Phosphors
The photoluminescence properties of sol–gel-derived NaGd 1− x Tm x (WO 4 ) 2 sub-micron powders were studied. Formation of a crystalline material with a...
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Controllable Synthesis of WO3 Nanowires by Electrospinning and Their Photocatalytic Properties Under Visible Light Irradiation
Large amounts of WO 3 nanowires were prepared on silicon substrates by electrospinning followed by appropriate calcinations in air using ammonium...
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Self-organized Anodic TiO2 Nanotubes: Functionalities and Applications Due to a Secondary Material
Among various nanostructures, either electrochemically prepared or electrochemically applicable, vertically oriented, highly ordered TiO2 nanotubular... -
Spherical modification of tungsten oxide powder and its mechanism analysis
Owing to its high production costs, complexity of equipment, and difficulty in controlling parameters, spherical or subglobose tungsten powder...
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Nanomodification of living organisms by biomimetic mineralization
In nature, a few living organisms such as diatoms, magnetotactic bacteria, and eggs have developed specific mineral structures, which can provide...
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Processing and sintering of yttrium-doped tungsten oxide nanopowders to tungsten-based composites
Innovative chemical methods are capable of fabricating nanoscale tungsten oxide compounds doped with various rare-earth elements with high purity and...
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Non-isothermal reduction kinetics of titanomagnetite by hydrogen
Reduction of titanomagnetite (TTM) powders by H 2 -Ar gas mixtures was investigated under a non-isothermal condition by using a thermogravimetric...
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W and two-dimensional WO3/W nanocrystals produced by controlled self-sustaining reduction of sodium tungstate
The influence of calcium fluoride (CaF 2 ) on combustion characteristics of Na 2 WO 4 + 3 Mg system and microstructure of the produced W and WO 3 /W...
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Microwave Synthesis of Cadmium and Zinc Tungstates
The possibility of zinc and cadmium tungstate synthesis by reaction of metal nitrates with ammonium paratungstate by microwave irradiation is...
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Anti-tumor activity of self-charged (Eu,Ca):WO3 and Eu:CaWO4 nanoparticles
Non-stoichiometric (Eu,Ca):WO 3 and Eu:CaWO 4 nanoparticles with anti-tumor activity are synthesized in a sol–gel method by adding excessive Eu 3 + and...
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Synthesis of Nanocrystalline CaWO4 as Low-Temperature Co-fired Ceramic Material: Processing, Structural and Physical Properties
Nanocrystalline scheelite CaWO 4 , a promising material for low-temperature co-fired ceramic (LTCC) applications, has been successfully synthesized...
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Direct Hydrothermal Precipitation of Pyrochlore-Type Tungsten Trioxide Hemihydrate from Alkaline Sodium Tungstate Solution
Pyrochlore-type tungsten trioxide hemihydrate (WO 3 ·0.5H 2 O) powder with the average particle size of 0.5 μ m was prepared successfully from the weak...
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Influence of pH and microwave calcination on the morphology of KGd(WO4)2 particles derived by Pechini Sol–Gel method
KGd(WO 4 ) 2 (KGW) particles were synthesized at 3.5, 5.5 and 7.5 pH values by Pechini polymeric complex sol–gel method using potassium nitrate,...
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Nanostructure and formation mechanism of Pt-WO3/C nanocatalyst by ethylene glycol method
Pt-WO 3 nanoparticles uniformly dispersed on Vulcan XC-72R carbon black were prepared by an ethylene glycol method. The morphology, composition,...
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Chemical, structural, and morphological characterization of tungsten nanoparticles synthesized by a facile chemical route
Tungsten nanoparticles (W-NPs) with average sizes ranging between 30 and 80 nm were prepared by thermolytic decomposition of tungsten hexacarbonyl in...
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Plasma synthesis of nanosized W–Co composite powder followed by carburization with a methane–hydrogen mixture
Nanosized tungsten carbide and cobalt composite powder was synthesized by a two-step reaction via a thermal plasma process. Ammonium paratungstate...
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Thermal Stability of Pt Nanoparticles Supported on WOx/Al2O3 for n-Heptane Hydroconversion
The thermal stabilization of γ-Al 2 O 3 using W +6 ions has been found useful to the synthesis of Pt/Al 2 O 3 catalysts. The sequential impregnation method...
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Formation of WO3 from various precursors
A comparative study of tungsten oxide formation from various precursors has been carried out using a complex of physicochemical methods....