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Showing 61-80 of 137 results
  1. 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....

    Article 01 March 2015
  2. 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...

    A. Durairajan, D. Thangaraju, ... S. Moorthy Babu in Journal of Electronic Materials
    Article 03 September 2015
  3. 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...

    Zhe Chen, Wu Wang, Kaigui Zhu in Acta Metallurgica Sinica (English Letters)
    Article 27 September 2014
  4. 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...
    Chapter 2015
  5. 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...

    Cong-Cong Wang, Cheng-Chang Jia, ... Yu-Fen Yang in Rare Metals
    Article 07 September 2014
  6. 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...

    Wei Chen, Guangchuan Wang, Ruikang Tang in Nano Research
    Article 03 September 2014
  7. 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...

    Mazher Ahmed Yar, Sverker Wahlberg, ... Mamoun Muhammed in Journal of Materials Science
    Article 15 May 2014
  8. 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...

    Jie Dang, Guo-hua Zhang, ... Kuo-chih Chou in International Journal of Minerals, Metallurgy, and Materials
    Article 14 December 2013
  9. 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...

    Khachatur V. Manukyan, Albert A. Voskanyan, ... Suren L. Kharatyan in Journal of Materials Research
    Article 01 September 2013
  10. 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...

    D. S. Sofronov, E. M. Sofronova, ... S. N. Lavrynenko in Journal of Materials Engineering and Performance
    Article 09 March 2012
  11. 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...

    CAO LIN, CAO JIEXIN, ... ALEX A VOLINSKY in Bulletin of Materials Science
    Article 25 October 2012
  12. 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...

    S. Vidya, Sam Solomon, J.K. Thomas in Journal of Electronic Materials
    Article 08 November 2012
  13. 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...

    **aobin Li, Jianpu Li, ... Tiangui Qi in Metallurgical and Materials Transactions B
    Article 10 December 2011
  14. 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,...

    D. Thangaraju, S. Moorthy Babu, ... Y. Hayakawa in Journal of Sol-Gel Science and Technology
    Article 28 January 2011
  15. 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,...

    Article 01 June 2011
  16. 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...

    Prasanta Kumar Sahoo, Sarika Srinivas, ... Bojja Sreedhar in Journal of Materials Research
    Article 01 March 2011
  17. 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...

    Taegong Ryu, H. Y. Sohn, ... Miguel Olivas-Martinez in Journal of Nanoparticle Research
    Article 10 February 2010
  18. 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...

    J. L. Contreras, G. A. Fuentes, ... B. Zeifert in MRS Online Proceedings Library
    Article 01 December 2010
  19. 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....

    L. M. Plyasova, I. Yu. Molina, ... A. N. Gavrilov in Journal of Surface Investigation. X-ray, Synchrotron and Neutron Techniques
    Article 16 December 2009
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