Kinetics of Oxidation of Aluminum Conduct Alloy AlTi0.1 with Calcium in the Solid State

Abstract

The solution to many problems of modern technology involves the use of materials with high oxidation resistance. Therefore, the study of the reaction of oxygen with metals and alloys has acquired great importance due to the recent widespread use in various fields of science and technology of new materials with special physical and chemical properties. In this series, a special place is given to aluminum alloys with various additives. The paper presents the results of a thermogravimetric study of the reaction of aluminum conductor alloy AlTi_0.1 (Al + 0.1 wt % Ti) containing calcium with air oxygen in the range of 723–823 K, in the solid state. The kinetic parameters of the oxidation process have been determined. It has been shown that calcium additions up to 0.5 wt % increase the oxidation rate of the aluminum conductor alloy AlTi_0.1, which is accompanied by a decrease in the apparent activation energy of the oxidation process from 140.0 to 120.1 kJ/mol. The oxidation process of alloys obeys a hyperbolic equation.