Open AccessTHERMODYNAMICS OF OXYGEN SOLUTIONS IN ALUMINUM-CONTAINING Ni – Cr MELTS
Author(s) -
V. Ya. Dashevskii,
A. A. Alexandrov
Publication year - 2018
Publication title -
izvestiâ vysših učebnyh zavedenij. černaâ metallurgiâ
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 0.3
H-Index - 7
eISSN - 2410-2091
pISSN - 0368-0797
DOI - 10.17073/0368-0797-2018-6-490-493
Subject(s) - solubility , oxygen , aluminium , chromium , materials science , metallurgy , limiting oxygen concentration , chemistry , inorganic chemistry , organic chemistry
Thermodynamic analysis of the effect of aluminum on the solubility of oxygen in Ni – Cr melts has been carried out. Aluminum at very low levels practically does not affect the concentration of oxygen in the melt, which is determined by the chromium content. When the aluminum content is above ~0.01 % for all alloys, it already determines the solubility of oxygen in the melt. The minimum values of the oxygen concentration are achieved with an aluminum content of ~0.2 %. With the increase of chromium content in the melt, the minimum oxygen concentration increases. For Ni – 10 % Cr, Ni – 20 % Cr and Ni – 30 % Cr alloys, it is 2·10–3, 7·10–3 and 10–2, respectively.