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:
Carbothermic reduction of natural wolframite (FeWO4) to nano-sized tungsten carbide (WC) particles was achieved by calcining mechanically activated mixtures of FeWO4 and active carbon at 1100°C under flowing Ar gas. The average particle size ranged between 20 and 25 nm. Intermediates, Fe6W6C and Fe3W3C, were observed between 900° and 1100°C, which decomposed to give the final product, WC. Homogeneity increase and associated decrease in the diffusion path by milling are mainly responsible for the successful production of WC. The process paves the way to rational utilization of natural FeWO4 directly to fine advanced materials.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1551-2916.2005.00157.x
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