ISSN:
1573-4803
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract The morphological changes occurring during the reduction of WO3 seem to be quite unique. The initial reduction of WO3 results in large plate-like whiskers of WO2.72 of two morphologies, randomly oriented whiskers and clusters of whiskers. These decompose to form agglomerates of WO2 (containing several small primary crystals), interlinked by chains of larger primary grains. The final reduction of WO2 to tungsten is achieved without any further morphological change. From these observations it seems that formation of whiskers of WO2.72 is the controlling step, in determining the final particle size of the tungsten powder.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00566566
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