Fabrication of ultrafine tungsten-based alloy powders by novel soda reduction process

Journal Article · Mon Mar 15 00:00:00 EDT 2010 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2009.12.005· OSTI ID:22202566

Lee, Dong-Won ^[1]; Turaev, Farkhod ^[1]; Kim, Ju-Hyeong ^[1]; Yang, Mingchuan ^[2]

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1. Powder Technology Research Group, Korea Institute of Materials Science (KIMS), Changwon, Kyungnam, 641-010 (Korea, Republic of)
2. W-base Heavy Alloy Research Group, Institute of Metal Research (IMR), 72 Wenhua-road, Shenyang, 110016 (China)

A novel reduction method has been developed to fabricate ultrafine tungsten heavy alloy powders, with ammonium metatungstate (AMT), iron(II) chloride tetrahydrate (FeCl{sub 2}.4H{sub 2}O), nickel(II) chloride hexahydrate (NiCl{sub 2}.6H{sub 2}O) as source materials and sodium tungstate dihydrate (Na{sub 2}WO{sub 4}.2H{sub 2}O) as a reductant. In the preparation of mixtures the amounts of the source components were chosen so as to obtain alloy of 93W-5Ni-2Fe composition (wt.%). The obtained powders were characterized by X-ray diffraction, XPS, field-emission scanning microscope (FESEM), and chemical composition was analyzed by EDX.

• OSTI ID: 22202566
• Journal Information: Materials Research Bulletin, Vol. 45, Issue 3; Conference: AFM 2009: Workshop on advances in functional materials, Beijing (China), 8-12 Jun 2008, ISFM 2009: 3. international symposium on functional materials, Beijing (China), 8-12 Jun 2008; Other Information: Copyright (c) 2009 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALLOYS
CHEMICAL COMPOSITION
CRYSTAL STRUCTURE
ELECTRON MICROSCOPY
FABRICATION
FIELD EMISSION
IRON CHLORIDES
NICKEL
NICKEL CHLORIDES
POWDERS
SODIUM TUNGSTATES
TUNGSTEN
X-RAY DIFFRACTION
X-RAY PHOTOELECTRON SPECTROSCOPY