Abstract
This article seeks to demonstrate a direct and simplified correlation between the measurement of the wettability and the agglomeration potency of the inclusion particles in liquid ferrous alloy. The established methodology has been validated by the agreement between the calculated coagulation coefficient of Al2O3 particles and the experimental data in the open literature. Subsequently, the coagulation coefficient of Al2O3, MgO, and Ti2O3 particles in ferrous alloy melts was evaluated quantitatively by the proposed method using the actual experimental data of contact angle and surface tension. Meanwhile, the effect of the matrix composition has been investigated by comparing the Hamaker constant and coagulation coefficient between Ti2O3/pure iron and Ti2O3/low-carbon steel systems. It is noted that the change of coagulation coefficient associated with the contact angle is caused by the formation of a new phase at the oxide/metal interface at the high temperature. The present work aims to provide a deep understanding of the connection between inclusion motion behavior in the liquid alloy and the high temperature interfacial phenomenon.
Highlights
PHYSICOCHEMICAL aspects focusing on the motion, agglomeration, and detachment behaviors of particles in the liquid or at liquid–gas interface are of great importance in the different fields including metallurgical engineering
It is reported that the v.d. Waals interaction (vdW) force could split into a geometrical part associated with a parameter called the ‘‘Hamaker constant.’’ The basic equation to calculate this factor is provided in Reference 25
The focus of this work is vdW force, which only relates to the Hamaker constant and coagulation coefficient
Summary
PHYSICOCHEMICAL aspects focusing on the motion, agglomeration, and detachment behaviors of particles in the liquid or at liquid–gas interface are of great importance in the different fields including metallurgical engineering.
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