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Low Temperature Tungsten, Tungsten Carbide and Tantalum Carbide Film Growth
MRS Proceedings, 2000Abstract:Low temperature chemical vapor deposition of tungsten, tungsten carbide and tantalum carbide films on SiO2/Si(100) surfaces was studied by X-ray photoelectron spectroscopy (XPS) and electron microscopy. Tungsten carbide films were deposited using the W(CO)6precursor with and without ethylene over temperatures ranging from 250 to 500 °C.
Y.-M. Sun +6 more
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Nanocrystalline Tungsten Carbide
2013In this chapter, attention will be given mainly to the production methods and investigation of particle size, microstructure and some properties of powders of tungsten carbide WC with a particle size from 20 to 200–300 nm, i.e. nanocrystalline and submicrocrystalline powders. Using an X-ray diffraction method for determining small particle size will be
Alexey S Kurlov, Aleksandr I. Gusev
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Production of Tungsten and Tungsten Carbide Powders
Powder Metallurgy and Metal Ceramics, 2019A method has been developed to process waste of tungsten–cobalt solid solutions by potentiostatic dissolution in phosphoric acid solutions. A dissolution mechanism depending on the electrode potential has been proposed. A technique for extracting tungsten from tungsten concentrates in chloride–metasilicate melts has been developed.
V. V. Malyshev, N. F. Kushchevska
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Aircraft Engineering and Aerospace Technology, 1985
THE introduction of tungsten carbide as a suitable material for precision gauge blocks began almost by accident.
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THE introduction of tungsten carbide as a suitable material for precision gauge blocks began almost by accident.
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Tungsten-Carbide Cutting Tools
Transactions of the American Society of Mechanical Engineers, 1929Abstract Results are given in the fabrication of tools of tungsten carbide, and experiences are detailed of successful and unsuccessful attempts to apply them to various kinds of work. Readjustment of manufacturing practices must take place if there is to be a place in industry for tungsten carbide.
Henry J. Long, W. Paul Eddy
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Indentation Damage in Tungsten Carbide and Tungsten-Titanium Carbide
1983Tungsten carbide (WC) is the main constituent of cemented carbides used for metal machining and rock drilling. Titanium carbide (TiC) is added to some grades of WC-Co to improve wear resistance in cutting metals. These grades contain both hexagonal WC and cubic (W, Ti)C solid solutions as the principal hard phases.
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Stoichiometric tungsten carbide coatings
AIP Conference Proceedings, 1996Filament Assisted Chemical Vapor Deposition (FA‐CVD) technique has been used to prepare tungsten carbide (WC) thin films. With this simple technique we obtained polycrystalline and stoichiometric WC coatings deposited on crystalline silicon and on stainless steel substrates.
G. A. Hirata +3 more
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Tungsten Carbide and Tungsten-Molybdenum Carbides as Automobile Exhaust Catalysts
1987Several catalyst samples of tungsten carbide and W,Mo mixed carbides with different Mo/W atom ratios, have been prepared to test their ability to remove carbon monoxide, nitric oxide and propane from a synthetic exhaust gas simulating automobile emissions. Surface characterization of the catalysts has been performed by X-ray photoelectron spectroscopy (
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Materials Science and Technology, 1995
AbstractA recent method for analysing the cohesion of transition metal carbides is applied to the carbides of tungsten. In the most interesting of these, WC, the W atoms are not close packed but are arranged in a simple hexagonal sub lattice of lower coordination number.
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AbstractA recent method for analysing the cohesion of transition metal carbides is applied to the carbides of tungsten. In the most interesting of these, WC, the W atoms are not close packed but are arranged in a simple hexagonal sub lattice of lower coordination number.
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High-Strength Tungsten Carbides
1971It is well known1,2 that the mechanical properties of sintered tungsten carbide-cobalt alloys are critically dependent upon carbon content. Only when the carbon content corresponds closely to the theoretical value for WC, i.e. 6.13 weight %, are two-phase structures (WC and a Co-rich solid solution) observed.
D. Moskowitz, M. J. Ford, M. Humenik
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