Oxidation Kinetics of Powdered Silicon Nitride
- 1 March 1969
- journal article
- Published by Wiley in Journal of the American Ceramic Society
- Vol. 52 (3) , 121-124
- https://doi.org/10.1111/j.1151-2916.1969.tb11195.x
Abstract
The oxidation kinetics of powdered silicon nitride were studied in dry oxygen and dry air at 1 atm pressure between 1065° and 1340°C. An automatic recording electrobalance was used to measure the weight gain as a function of time. Parabolic oxidation kinetics were observed with an activation energy of 61 kcal/mol in dry oxygen and 68 kcal/mol in dry air. The oxidation rate in dry oxygen was approximately twice that in air. The solid oxidation product was tridymite above 1125°C and amorphous silica at 1067°C.Keywords
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