Title of article
Direct oxidation route from metal to ceramic: Study on cobalt oxide
Author/Authors
Metz، نويسنده , , Renaud and Morel، نويسنده , , Jonathan and Delalu، نويسنده , , Henri and Ananthakumar، نويسنده , , Sayed S. and Hassanzadeh، نويسنده , , Mehrdad، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2009
Pages
6
From page
1984
To page
1989
Abstract
The study deals with the direct-oxidation kinetics of micronic-cobalt metal particles and its simulation for the complete transition from metal to ceramic. The simulation was also experimentally verified. All the three possible interfaces, Co/CoO, CoO/Co3O4 and Co3O4/O2 (air), have been taken into consideration for the simulation. The complete oxidation kinetics has been investigated from the thermogravimetric studies under isothermal conditions in the temperatures 973–1173 K. A quantitative interpretation based on the diffusion of Co or oxygen ions through the grown oxide layer has been proposed. The activation energy for the oxidation kinetics calculated from the Arrhenius law was 161 ± 20 kJ mol−1.
Keywords
Kinetics , Cobalt , Direct oxidation , Cobalt oxide
Journal title
Materials Research Bulletin
Serial Year
2009
Journal title
Materials Research Bulletin
Record number
2099774
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