Open AccessEffect of Rare Earth Yttrium on Thermodynamic Properties of 20MnSi Steel
Author(s) -
Zhiling Bai,
Bingke Qin
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1885/3/032029
Subject(s) - yttrium , gibbs free energy , rare earth , flue gas desulfurization , thermodynamics , chemistry , materials science , metallurgy , physics , oxide , organic chemistry
The Gibbs free energy of yttrium-containing compounds in 20MnSi steel is obtained by establishing a thermodynamic model and calculation. The results show that as the Y content increases, the oxygen content and sulfur content first decrease sharply and then slowly decrease; the Gibbs free energy of yttrium-containing compounds decreases as the content of rare earth yttrium increases; the Gibbs free energy of Y 2 O 2 S is the most negative and the Gibbs free energy of Y 2 O 3 is the largest. It is concluded from the thermodynamic calculation results that rare earth yttrium can be desulfurized and deoxidized, and the desulfurization tendency of yttrium is greater than the deoxidation tendency; Y 2 O 3 is unstable and can be transformed into Y2O 2 S.