The preparation of fine carbide powders from coal solutions

Title: The preparation of fine carbide powders from coal solutions

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Abstract

Fine carbide powders are prepared carbothermally from precursors using coal solutions as the carbon source. Over 90 percent of the organic part of a suitable coal dissolves under mild conditions in solvent on addition of a little alkali. After removal of the minerals the coal in solution is brought into very intimate contact with a metal oxide, by sol-gel or similar techniques to give a product precursor. The coal is an inexpensive source of sol-gel carbon. The precursors are highly reactive and convert in an inert atmosphere to carbide at relatively low temperature. Micron-sized powders of silicon, tungsten and other carbides have been prepared. Mixed products such as tungsten carbide/cobalt of very uniform composition are obtained from suitable precursors.

Authors:

Morgan, D L; Cukan, V; Prins, S N ^[1]

CSIR, Pretoria (South Africa)

Publication Date:: 1995-12-01

OSTI Identifier:: 126496

Report Number(s):: CONF-950402-
TRN: 95:006086-0480

Resource Type:: Conference

Resource Relation:: Conference: 209. American Chemical Society (ACS) national meeting, Anaheim, CA (United States), 2-6 Apr 1995; Other Information: PBD: 1995; Related Information: Is Part Of 209th ACS national meeting; PB: 2088 p.

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; 01 COAL, LIGNITE, AND PEAT; SILICON CARBIDES; SYNTHESIS; COAL; DEMINERALIZATION; CHEMICAL COMPOSITION; TUNGSTEN CARBIDES; POWDERS; PRECURSOR; SOL-GEL PROCESS

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                    Morgan, D L, Cukan, V, and Prins, S N. The preparation of fine carbide powders from coal solutions.  United States: N. p., 1995. 
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                    Morgan, D L, Cukan, V, & Prins, S N. The preparation of fine carbide powders from coal solutions.  United States.

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                    Morgan, D L, Cukan, V, and Prins, S N. Fri .  
        "The preparation of fine carbide powders from coal solutions".  United States.

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@article{osti_126496,

  title        = {The preparation of fine carbide powders from coal solutions},

  author       = {Morgan, D L and Cukan, V and Prins, S N},

  abstractNote = {Fine carbide powders are prepared carbothermally from precursors using coal solutions as the carbon source. Over 90 percent of the organic part of a suitable coal dissolves under mild conditions in solvent on addition of a little alkali. After removal of the minerals the coal in solution is brought into very intimate contact with a metal oxide, by sol-gel or similar techniques to give a product precursor. The coal is an inexpensive source of sol-gel carbon. The precursors are highly reactive and convert in an inert atmosphere to carbide at relatively low temperature. Micron-sized powders of silicon, tungsten and other carbides have been prepared. Mixed products such as tungsten carbide/cobalt of very uniform composition are obtained from suitable precursors.},

  doi          = {},

  url          = {https://www.osti.gov/biblio/126496},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1995},

  month        = {12}

}

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