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Studies of dynamic mass transfer at the slag–metal interface – Interfacial velocity measurements

  • Luckman Muhmood , Nurni Neelakandan Viswanathan and Seshadri Seetharaman
Published/Copyright: June 11, 2013
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 103 Issue 7

Abstract

The dynamics of oxygen transport along the slag–metal interface of pure iron and alumina-saturated CaO–Al2O3–SiO2 slag was studied using high-temperature X-ray image analysis. The oscillations of the metal drop occurring due to the interfacial movement of oxygen atoms driven by Marangoni forces were studied in detail. The change in interfacial area during the oscillations was measured using a digitizing software and MATLAB. It was observed that the interfacial velocity as a function of oxygen exhibits insignificant variation with temperature. Further, the values obtained for the interfacial velocity using oxygen concentration difference at the interface were slightly lower in comparison to those using sulfur. The possible reason for this lower velocity could be that, although oxygen is a smaller atom compared to that of sulfur, the energy barrier at the free iron surface is higher for oxygen, thus hindering its motion along the interface.

Keywords: Interfacial phenomena; Interfacial velocity; Oxygen; Interfacial tension
* Correspondence address Dr. Luckman Muhmood CSIRO Box 312, Clayton South, VIC-3169, Australia Tel: +61-420627008 E-mail:

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Received: 2010-10-29
Accepted: 2012-1-9
Published Online: 2013-06-11
Published in Print: 2012-07-01

© 2012, Carl Hanser Verlag, München

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https://doi.org/10.3139/146.110705
Keywords for this article
Interfacial phenomena; Interfacial velocity; Oxygen; Interfacial tension

Articles in the same Issue

  1. Contents
  2. Contents
  3. Original Contributions
  4. Diffusivities and atomic mobilities in Cu-rich fcc Al–Cu–Mn alloys
  5. Phase transformations in non-isothermally annealed as-cast and cold-rolled AlMnScZr alloys
  6. High-temperature deformation behavior and thermal properties of an Ni30Co17Fe53 alloy
  7. Microstructural and mechanical properties of dual-phase steels welded using GMAW with solid and flux-cored welding wires
  8. Microstructure – wear performance relationship of hypoeutectic 15% Cr-2% Mo white iron
  9. The enhancement of wear properties of squeeze-cast A356 composites reinforced with B4C particulates
  10. Phase diagram of the Al–Dy–Zr ternary system at 773 K
  11. Calorimetric investigations of liquid gold–antimony–tin alloys
  12. Combustion synthesis and characterization of bulk nanostructured Ni50Al17Fe33 alloy
  13. Effect of sand blasting on structural, thermal, and mechanical properties of Zr58.3Cu18.8Al14.6Ni8.3 bulk metallic glass
  14. Studies of dynamic mass transfer at the slag–metal interface – Interfacial velocity measurements
  15. Structural and optical investigation of gadolinia-doped ceria powders prepared by polymer complex solution method
  16. Adsorption of bovine serum albumin onto titanium dioxide nanotube arrays
  17. CNT-based displacement sensor
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  21. The durability of fired brick incorporating textile factory waste ash and basaltic pumice
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