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Title: The preparation of fine carbide powders from coal solutions

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:
; ;  [1]
  1. CSIR, Pretoria (South Africa)
Publication Date:
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

Citation Formats

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

Conference:
Other availability
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