精炼渣中Al2O3和TiO2含量对Incoloy825合金Al和Ti含量的影响
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第一作者：龚伟
通讯作者：姜周华
合写作者：周荣傲,王鹏飞,耿鑫
发表刊物：伊西国际
期号：11
卷号：62
DOI码：10.2355/isijinternational.ISIJINT-2022-158
刊物所在地：日本
摘要：During the refining process of Incoloy825 nickel-based alloy, the reaction between the refining slag and Al and Ti in the alloy can result in the oxidation loss. Therefore, the effect of the TiO2 and Al2O3 contents in the refining slag (CaO–SiO2–Al2O3–MgO–CaF2–TiO2) on the final Al and Ti contents in Incoloy825 alloy was investigated by slag-metal reaction experiment in a 1-kg MoSi2 resistance furnace. The thermodynamic model was established based on ion and molecular coexistence theory and the kinetic model was established based on two-film theory. The experimental results show that an increase in TiO2 (Al2O3) content in the slag leads to an increase (decrease) in Ti content and a decrease (increase) in Al content in the final alloy. The thermodynamic model demonstrates that the activities of SiO2, Al2O3, and TiO2 in the slag are negatively correlated with the content of CaO and positively correlated with SiO2, Al2O3, and TiO2 in the slag. The kinetic model indicates that the slag-metal reaction reaches equilibrium within 10 min, and the model has good applicability for the reaction process of Incoloy825 alloy and slag refining.
项目来源：国家自然科学基金重点项目
关键字：Incoloy825, refining slag, Al2O3, TiO2, thermodynamic, kinetic model
论文类型：SCI JCR Q3
学科门类：工学
文献类型：JCR 三区
一级学科：冶金工程
页面范围：2255–2265
ISSN号：0915-1559
是否译文：否