Effect of Magnesium and Calcium on the Activity of Oxygen in Model Nickel Melts at PAr=0.1 MPa and Analysis of Nonmetallic Inclusions

被引：1
|
作者：
Burtsev, V. T. [1 ]
Chabina, E. B. [2 ]
Anuchkin, S. N. [1 ]
机构：
[1] Russian Acad Sci, Baikov Inst Met & Mat Sci, Moscow 119334, Russia
[2] All Russian Res Inst Aviat Mat VIAM, Moscow 105005, Russia
来源：
RUSSIAN METALLURGY | 2021年 / 2021卷 / 12期
基金：
俄罗斯基础研究基金会;
关键词：
nickel-oxygen melts; activity of oxygen; EMF method; magnesium; calcium; nonmetallic inclusions;
D O I：
10.1134/S0036029521120077
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Electromotive force measurements are used to study the activity of oxygen in nickel melts during their deoxidation with Mg/Ca (up to 0.2 wt %) in a high-purity argon atmosphere, and the changes in a([O]) in accordance with the deoxidizer concentrations are described by logarithmic dependences. A substantial increase in the deoxidizing capacity of Mg and Ca as compared to that of Al is demonstrated for a deoxidizer concentration of 0.05 wt % in a metal. The morphology and composition of nonmetallic inclusions in the metal after deoxidation are studied; complex configurations of nonmetallic inclusions 2-100 mu m in size, which are arranged at grain boundaries, are demonstrated.
引用
收藏
页码：1556 / 1563
页数：8
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