Journal of Solid State Chemistry p. 49 - 57 (1985)
Update date:2022-08-11
Topics:
Malecki
Tareen
Doumerc
Rabardel
Launay
Kinetics of thermal decomposition in vacuum of Co//3O//4 powder as well as single crystals has been investigated. Discrepancies with the results of previous authors have been discussed. Decomposition of Co//3O//4 proceeds through formation of a compact layer of CoO and hence diffusion is the rate-limiting factor. THe experimental curves alpha (t) can be described for 0. 05 less than alpha less than 0. 85 using a modified Ginstling-Brounshtein equation: 1 minus 2 alpha /3 minus (1 minus alpha )**2**/**3 equals kt**n where the activation energy varies with the degree of decomposition.
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