Effect of Chromium on the Surface Tension of Fe-C-Cr Model Alloys

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F18%3A10241099" target="_blank" >RIV/61989100:27360/18:10241099 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Effect of Chromium on the Surface Tension of Fe-C-Cr Model Alloys

Popis výsledku v původním jazyce

The presented paper is focused on the experimental study of the surface tension of selected Fe-C-Cr model alloys. The surface tension was measured by the sessile drop method in the temperature interval from the melting point of the given model alloys to the temperature of 1,600oC. The effect of the temperature and the chemical composition on the surface tension of the model alloys was studied. Therefore, the model alloys with different chromium content (0.92 - 4.76 wt. %) were chosen for an examination of this influence. Experimental surface tension measurements were repeated for each sample and then statistically evaluated by statistical computing environment R (R Core Team (2018). R: A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria. URL https://www.R-project.org) to assess the reproducibility of the measured data. During evaluation of the surface tension dependence on temperature, it has been shown that the surface tension of the alloys increased slightly with the increasing temperature, i.e. that the temperature coefficient of the surface tension dσ/dT was positive. The positive character of the temperature coefficient can be attributed to the presence of the surface-active elements, especially the sulphur, in the selected samples. It was found that the surface tension of the alloy samples also raised with the increasing chromium content.

Název v anglickém jazyce

Effect of Chromium on the Surface Tension of Fe-C-Cr Model Alloys

Popis výsledku anglicky

The presented paper is focused on the experimental study of the surface tension of selected Fe-C-Cr model alloys. The surface tension was measured by the sessile drop method in the temperature interval from the melting point of the given model alloys to the temperature of 1,600oC. The effect of the temperature and the chemical composition on the surface tension of the model alloys was studied. Therefore, the model alloys with different chromium content (0.92 - 4.76 wt. %) were chosen for an examination of this influence. Experimental surface tension measurements were repeated for each sample and then statistically evaluated by statistical computing environment R (R Core Team (2018). R: A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria. URL https://www.R-project.org) to assess the reproducibility of the measured data. During evaluation of the surface tension dependence on temperature, it has been shown that the surface tension of the alloys increased slightly with the increasing temperature, i.e. that the temperature coefficient of the surface tension dσ/dT was positive. The positive character of the temperature coefficient can be attributed to the presence of the surface-active elements, especially the sulphur, in the selected samples. It was found that the surface tension of the alloy samples also raised with the increasing chromium content.

Druh

J_ost - Ostatní články v recenzovaných periodicích

CEP obor

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OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/LO1203" target="_blank" >LO1203: Regionální materiálově technologické výzkumné centrum - Program udržitelnosti</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Hutnické listy

ISSN

0018-8069

e-ISSN

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Svazek periodika

71

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

5

Strana od-do

8-12

Kód UT WoS článku

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EID výsledku v databázi Scopus

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