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Abstract <p>The kinetics of oxidation of the aluminum alloy AlFe5Si10 alloyed with up to 3.0 wt % gallium were studied by thermogravimetric analysis. It was shown that gallium addition to the alloy and an increase in temperature both increase the oxidation rate of the base alloy in the solid state. The apparent activation energy of the oxidation process of AlFe5Si10 is 178.0 kJ/mol and decreases to 147.9 kJ/mol for the alloy containing 3.0&#xa0;wt % gallium. The oxidation curves of the gallium-alloyed alloys in the solid state are described by polynomials indicative of a hyperbolic mechanism of the process. A mechanism of gallium’s influence on the oxidizability of AlFe5Si10 was established: in the range 0.05–3.0 wt % gallium plays a dominant role in the formation of an oxide film characterized by low protective properties.</p>

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Oxidation Kinetics of Aluminum Alloy AlFe5Si10 with Gallium in the Solid State

  • 期刊论文

  • 发表日期：

    2026年8月4日

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  • I. N. Ganiev,
  • U. Sh. Yakubov,
  • M. Sh. Zhuraeva,
  • I. T. Amonzoda,
  • N. I. Ganieva

摘要

Abstract

The kinetics of oxidation of the aluminum alloy AlFe5Si10 alloyed with up to 3.0 wt % gallium were studied by thermogravimetric analysis. It was shown that gallium addition to the alloy and an increase in temperature both increase the oxidation rate of the base alloy in the solid state. The apparent activation energy of the oxidation process of AlFe5Si10 is 178.0 kJ/mol and decreases to 147.9 kJ/mol for the alloy containing 3.0 wt % gallium. The oxidation curves of the gallium-alloyed alloys in the solid state are described by polynomials indicative of a hyperbolic mechanism of the process. A mechanism of gallium’s influence on the oxidizability of AlFe5Si10 was established: in the range 0.05–3.0 wt % gallium plays a dominant role in the formation of an oxide film characterized by low protective properties.