Abstract
A novel system for measuring oxidation kinetics, based on solid-stateelectrochemistry, has been designed and developed. In this system, thepressure of the oxidizing gas was measured by a gas-pressure sensor andkept constant in the course of oxidation using aPt|ZrO2(Y2O3)|Pt oxygenpump. The mass of oxygen consumed was calculated by integrating the electriccurrent flowing through the solid-state electrochemical oxygen pump overtime. The oxidation kinetics curve could be plotted and displayed on thecomputer automatically and continuously. The reliability of, and operatingconditions for, the system have been determined. The results showed that thesystem can be used for accurate measurement of the kinetics of oxidation ofmetals in oxygen at pressures of 0.05 to 1 atm and over a wide range oftemperatures. The accuracy of measurement was close to 0.01 mg and could beimproved with further development.
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