High-Temperature Surface Oxide Growth Kinetics of Al–Si–Zr Bulk Alloys and Ribbons
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Department of Chemical Sciences, Faculty of Pharmacy, Medical University of Plovdiv, 15A Vassil Aprilov blvd., 4000 Plovdiv, Bulgaria
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Department of General and Inorganic Chemistry, Methodology of Chemical Education, University of Plovdiv Paisii Hilendarski, 4000 Plovdiv, Bulgaria
3
Acad. A. Balevski Institute of Materials Science, BAS, 1574 Sofia, Bulgaria
*
Author to whom correspondence should be addressed.
Academic Editor: Isaac Toda-Caraballo
Metals 2021, 11(12), 1893; https://doi.org/10.3390/met11121893
Received: 2 November 2021
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Revised: 17 November 2021
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Accepted: 23 November 2021
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Published: 25 November 2021
(This article belongs to the Special Issue Prediction of Phase Stability and Mechanical Properties of Novel Alloys)
A typical modification technique of the functional properties of Al–Si based alloys is the addition of some third element in trace level. In the present work, ternary Al–Si–Zr bulk and ribbon alloys have been prepared. The kinetics of high-temperature surface oxidation has been studied by thermogravimetric method. It was found that at the start of the experiment the chemical reaction velocity is rate-controlling while for longer times the (oxygen) diffusion is the rate-controlling process. Activation energy of the two stages of oxidation has been obtained. Additional studies such as thermochemical analysis, optical and electron microscopy, and microhardness tests have been done.
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Keywords:
Al–Si–Zr bulk alloys and rapidly solidified ribbons; thermochemical and thermogravimetric analysis; kinetics of high-temperature oxidation
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MDPI and ACS Style
Kiradzhiyska, D.; Vassilev, G.; Mancheva, R.; Yaneva, S.; Milcheva, N. High-Temperature Surface Oxide Growth Kinetics of Al–Si–Zr Bulk Alloys and Ribbons. Metals 2021, 11, 1893. https://doi.org/10.3390/met11121893
AMA Style
Kiradzhiyska D, Vassilev G, Mancheva R, Yaneva S, Milcheva N. High-Temperature Surface Oxide Growth Kinetics of Al–Si–Zr Bulk Alloys and Ribbons. Metals. 2021; 11(12):1893. https://doi.org/10.3390/met11121893
Chicago/Turabian StyleKiradzhiyska, Denitsa, Gueorgui Vassilev, Rositsa Mancheva, Svetlana Yaneva, and Nikolina Milcheva. 2021. "High-Temperature Surface Oxide Growth Kinetics of Al–Si–Zr Bulk Alloys and Ribbons" Metals 11, no. 12: 1893. https://doi.org/10.3390/met11121893
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