SURFACE AND INTERFACIAL PROPERTIES OF Fe-C-O-Cr ALLOYS IN CONTACT WITH ALUMINA

  • Vlastimil Novák VSB - Technical University of Ostrava
  • Lenka Řeháčková VSB - Technical University of Ostrava
  • Petra Váňová VSB - Technical University of Ostrava
  • Bedřich Smetana VSB - Technical University of Ostrava
  • Kateřina Konečná VSB - Technical University of Ostrava
  • Ľubomíra Drozdová VSB - Technical University of Ostrava
  • Silvie Rosypalová VSB - Technical University of Ostrava

Abstract


In this paper, temperature and concentration dependencies of density and surface tension of liquid Fe-C-O-Cr alloys (1.93 - 4.76 wt.% Cr) were investigated in high-temperature resistance observation furnace by a sessile drop method during heating from liquidus temperature to 1600 °C. The interfacial characteristics (interfacial tension, wetting angle, work of adhesion and spreading coefficient) of liquid alloy/alumina system were also determined depending on temperature. The effect of temperature and chromium content on surface and interfacial properties was of proven in case of all examined alloys. On the ground that the content of surface-active elements such as oxygen (up to 195 ppm) and sulfur (up to 545 ppm) was higher, the influence of activities of both mentioned elements on surface tension of alloy samples was assessed. Particular attention was paid to the dependence of the surface tension temperature coefficient on oxygen and sulfur activity.

 

Author Biographies

Vlastimil Novák, VSB - Technical University of Ostrava

Faculty of Materials Science and Technology

Department of Physical Chemistry and Theory of Technological Processes

Lenka Řeháčková, VSB - Technical University of Ostrava

Faculty of Materials Science and Technology

Department of Physical Chemistry and Theory of Technological Processes

Associate Professor

Petra Váňová, VSB - Technical University of Ostrava

Faculty of Materials Science and Technology

Department of Material Engineering

Associate Professor

Bedřich Smetana, VSB - Technical University of Ostrava

Faculty of Materials Science and Technology

Department of Physical Chemistry and Theory of Technological Processes

Associate Professor

Kateřina Konečná, VSB - Technical University of Ostrava

Faculty of Materials Science and Technology

Department of Material Engineering

Dr.

Ľubomíra Drozdová, VSB - Technical University of Ostrava

Faculty of Materials Science and Technology

Department of Physical Chemistry and Theory of Technological Processes

Silvie Rosypalová, VSB - Technical University of Ostrava

Faculty of Materials Science and Technology

Department of Physical Chemistry and Theory of Technological Processes

Dr.

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Published
2020/09/15
How to Cite
Novák, V., Řeháčková, L., Váňová, P., Smetana, B., Konečná, K., Drozdová, Ľubomíra, & Rosypalová, S. (2020). SURFACE AND INTERFACIAL PROPERTIES OF Fe-C-O-Cr ALLOYS IN CONTACT WITH ALUMINA. Journal of Mining and Metallurgy, Section B: Metallurgy, 56(2), 143-151. Retrieved from https://aseestant.ceon.rs/index.php/jmm/article/view/22276
Issue
Vol. 56 No. 2 (2020)
Section
Original Scientific Paper

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