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Metallurgical and Materials Transactions B

, Volume 34, Issue 5, pp 647–652 | Cite as

Investigation of the reactions between oxygen-containing iron and SiO2 substrate by X-ray sessile-drop technique

  • E. Kapilashrami
  • S. Seetharaman
  • A. K. Lahiri
  • A. W. Cramb
Article

Abstract

The X-ray sessile-drop method was employed in the present investigation to measure the contact angle between liquid iron and a silica substrate under argon as well as CO-CO2-Ar atmospheres in the temperature range of 1823 to 1833 K. In the latter case, the measurements were carried out in the dynamic mode, and the contact-angle changes were followed as a function of time as oxygen in the gas dissolved in the metal. The static measurements in argon showed that the contact angles in the experimental temperature range are of the order of 135 deg, similar to those observed in the case of the alumina substrate. In the dynamic mode, oxygen partial pressures varying between 9.9·10−4 and 1.5·10−2 Pa were imposed on the system. In these experiments, the contact angle decreased in two stages, with an intermediate steady-state region. Fayalite slag, formed due to the reaction between the metallic phase and the substrate, was found to accumulate around the drop. The results are of relevance in understanding the mechanism of corrosion of silica-containing refractories by molten iron.

Keywords

Contact Angle Material Transaction Oxygen Partial Pressure Experimental Series Liquid Iron 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© ASM International & TMS-The Minerals, Metals and Materials Society 2003

Authors and Affiliations

  • E. Kapilashrami
    • 1
  • S. Seetharaman
    • 1
  • A. K. Lahiri
    • 2
  • A. W. Cramb
    • 3
  1. 1.the Department of Materials Science and EngineeringRoyal Institute of TechnologyStockholmSweden
  2. 2.the Department of MetallurgyIndian Institute of ScienceBangaloreIndia
  3. 3.the Department of Materials Science and EngineeringCarnegie Mellon UniversityPittsburgh

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