The kinetics of the oxidation of zirconium in Carbon-14 labelled carbon dioxide have been investigated at 550, 650 and 750 C with the vacuum microbalance. The amount of carbon deposited on the sample surface during oxidation in carbon dioxide was only about 2 percent of the total weight gain at each of the temperatures. In carbon dioxide, the rate of oxidation first decreased and then increased with time indicating breakaway. In runs in oxygen (carried out for comparative purposes), the rate continuously decreased with time and breakaway did not occur within the period of the experiments. Maximum weight gain was 900 μg/cm2.

6.3.20, 3.4.6

Subject
Ions, Diffusion, Zirconium, Oxide layers, Carbon monoxide, Weight gain, Oxide surfaces, Interfaces, Carbon dioxide, Oxygen, Carbon, Chemical reactions, Oxidation
© 1961 National Association of Corrosion Engineers
1961
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