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DETERMINATION OF SURFACE PROPERTIES OF FE - C - CR MODEL ALLOYS

1 NOVÁK Vlastimil
Co-authors:
1,2 ŘEHÁČKOVÁ Lenka 1,2 SMETANA Bedřich 1,2 ROSYPALOVÁ Silvie 1,2 DROZDOVÁ Ľubomíra 1,2 LICHÝ Petr 1 RADKOVSKÝ Filip 1 KONEČNÁ Kateřina 2,3 LITSCHMANNOVÁ Martina 1 DOBROVSKÁ Jana
Institutions:
1 Faculty of Metallurgy and Materials Engineering, VŠB-Technical University of Ostrava, Ostrava, Czech Republic, EU, vlastimil.novak@vsb.cz
2 Regional material science and technology centre, VŠB-Technical University of Ostrava, Ostrava, Czech Republic, EU
3 Faculty of Electrical Engineering and Computer Science, VŠB-Technical University of Ostrava, Ostrava, Czech Republic, EU
Conference:
27th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 23rd - 25th 2018
Proceedings:
Proceedings 27th International Conference on Metallurgy and Materials
Pages:
170-175
ISBN:
978-80-87294-84-0
ISSN:
2694-9296
Published:
24th October 2018
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
577 views / 367 downloads
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Abstract

In this paper, the dependencies of density (ρ), surface tension (σ), and average wetting angles on temperature were investigated at three Fe - C - Cr model alloys where chromium content ranged from 0.92 to 4.76 wt%. All measurements were performed by sessile drop technique in a resistance furnace at temperatures from melting point up to 1600 °C. The effect of chromium, oxygen, and sulfur on the values ​​of the abovementioned quantities was found. The temperature coefficient of surface tension dσ/dT was positive for all liquid metal samples due to the influence of surface active elements. The surface tension and average wetting angles raised with increasing chromium content. All obtained data were statistically evaluated with a satisfactory result.

Keywords: Surface properties, Fe - C - Cr model alloys, chromium, alumina, sessile drop method

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