ISSN:
1551-2916
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Tungsten cobalt carbides and oxides can be obtained via a single-step pyrolysis of an organometallic single-source precursor (eta5-C5H5)(CO)3WCo(CO)4 (1). Pyrolysis of 1 in an oxygen atmosphere produced WCoO4 at 600°C. In a nitrogen atmosphere W6Co6C was obtained when 1 was heated at 700°C. However, under vacuum, the pyrolysis of 1 produced the other phase-W3Co3C-at 700°C. Both carbides were contaminated with graphitic carbon, as indicated by their ESCA spectra. Powders that were obtained by using these procedures had particle sizes of up to 100 µm. Micrography showed that the particles were porous, which indicated outgassing during pyrolysis.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1151-2916.1999.tb01936.x
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