Fundamental Research on Interfacial Properties of Pure Iron, Al-Killed Steel and Ti-Killed Steel

In order to understand the behavior and removing method of Al ₂O₃ and TiO_n in liquid steel, the investigation of interfacial properties is very important. The contact angles of pure Fe, Al-killed steel and Ti-killed steel in contact with Al₂O₃ and MgO substrates were measured by the sessile drop technique. The measurements were conducted at various oxygen potentials at 1 873 K. The studies were focused on other factors affecting, interfacial properties. The result shows that the contact angle is a function of droplet size and the contact angles increase with increasing droplet size. In this area, the line energy which is an important factor was proposed for the first time.