Journal of Siberian Federal University. Engineering & Technologies / The Influence of Thallium Additives on the Kinetics of Oxidation of the Zn22Al Alloy

Full text (.pdf)
Issue
Journal of Siberian Federal University. Engineering & Technologies. 2023 16 (3)
Authors
Sharipov, Jamshed H.; Hakimov, Iskandar B.; Obidov, Ziyodullo R.
Contact information
Sharipov, Jamshed H.: Institute of Chemistry named after V. I. Nikitin National Academy of Sciences of Tajikistan Dushanbe, Republic of Tajikistan; Hakimov, Iskandar B.: Institute of Chemistry named after V. I. Nikitin National Academy of Sciences of Tajikistan Dushanbe, Republic of Tajikistan; Obidov, Ziyodullo R.: Institute of Chemistry named after V. I. Nikitin National Academy of Sciences of Tajikistan Dushanbe, Republic of Tajikistan;
Keywords
Zn22Al alloy; thallium; thermogravimetrical method; oxidation rate; activation energy
Abstract

The article presents the results of a thermogravimetrical study of the effect of thallium alloying additives on the oxidation kinetics of the Zn22Al alloy. Established in the temperature range of 473–623 K the kinetic and energy parameters of the oxidation of alloys. The oxidation of alloys proceeds according to the hyperbolic mechanism and has the order of 10–4 kg∙m‑2∙sec‑1. Higher activation energies indicate that the oxidation of these alloy samples results in the formation of oxide films with good protective properties. Additives of thallium in amounts of 0.01–1.0 wt.% contribute to a decrease in the oxidizability of the Zn22Al alloy. The resulting products during the oxidation of the studied alloys consist of a mixture of oxides ZnO, ZnAl2O4, Al2O3, Tl2O3

Pages
363–370
EDN
JWUYWP
Paper at repository of SibFU
https://elib.sfu-kras.ru/handle/2311/150108

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