Siberian Federal University

Issue

Journal of Siberian Federal University. Engineering & Technologies. 2022 15 (5)

Authors

Hamroqul, Firuzi; Jobirov, Umed R.; Obidov, Ziyodullo R.

Contact information

Hamroqul, Firuzi: Institute of Chemistry named after V. I. Nikitin National Academy of Sciences of Tajikistan Dushanbe, Republic of Tajikistan; ; Jobirov, Umed R.: 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

alloy Zn0.5Al; neodymium; erbium; thermogravimetrical method; kinetics oxidation; activation energy

Abstract

Thermogravimetrical method studied the effect of alloying additions (on 0.01÷1.0 wt%) of neodymium and erbium on the oxidation kinetics of Zn0.5Al zinc alloy in the temperature range of 523–623 K. The values of the oxidation rate of the Zn0.5Al alloy and the alloy alloyed with neodymium and erbium, have been established in solid state. The behavior of ternary alloys with the participation of neodymium and erbium at the indicated temperatures somewhat differs from the oxidation of the binary Zn0.5Al alloy. For the eutectoid Zn0.5Al alloy, as compared with the alloys alloyed with neodymium and erbium, the minimum oxidation rate was noted. The addition of 0.5 and 1.0 % Nd and Er in the zinc alloy Zn0.5Al significantly increases its oxidizability. Alloy additions (on 0.01÷0.05 %) of neodymium and erbium slightly increase the oxidizability of the eutectoid zinc alloy Zn0.5Al. During the oxidation of the studied hard alloys, protective oxides pellicle are formed ZnO, Al2O3, Nd2O3, Er2O3, ZnAl2O4

Pages

561–568

DOI

10.17516/1999-494X-0417

Paper at repository of SibFU

https://elib.sfu-kras.ru/handle/2311/148769

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0).