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Applied Sciences
Volume 11
Issue 4
10.3390/app11041625
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Article

Characterization of Aluminum Alloy–Silicon Carbide Functionally Graded Materials Developed by Centrifugal Casting Process

by
Ioan Milosan
1,
Tibor Bedő
1,*,
Camelia Gabor
1,
Daniel Munteanu
1,
Mihai Alin Pop
1,
Dorin Catana
2,
Mihaela Cosnita
3 and
Béla Varga
1
1
Materials Science Department, Faculty of Materials Science and Engineering, Transilvania University of Brasov, 29 Eroilor Bld., 500036 Brasov, Romania
2
Materials Engineering and Welding Department, Faculty of Materials Science and Engineering, Transilvania University of Brasov, 29 Eroilor Bld., 500036 Brasov, Romania
3
Department of Product Design, Mechatronics and Environment, Faculty of Product Design and Environment, Transilvania University of Brasov, Colina Universitatii Street, no. 1, 500068 Brasov, Romania
*
Author to whom correspondence should be addressed.
Appl. Sci. 2021, 11(4), 1625; https://doi.org/10.3390/app11041625
Submission received: 19 January 2021 / Revised: 8 February 2021 / Accepted: 8 February 2021 / Published: 11 February 2021
(This article belongs to the Special Issue Nanostructured and Functionalized Materials: Characterization and Applications)
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Abstract

The continuous development of modern industries rises the necessity for functionally graded materials. This research starts from the consideration that the incorporation of SiC particles in the molten aluminum alloy can be difficult due to the very low wettability of SiC particles. In order to increase their wettability, SiC particles were covered with a layer of metallic copper. The incorporation of SiC particles into the aluminum alloy mass was performed by centrifugal casting. The secondary hypoeutectic Al-Si alloy used in this study was elaborated within the crucible of a resistors heated furnace. The metallic coating of SiC particles, in addition to the effect of increasing their wettability by molten metal, also has a role in preventing the formation of aluminum carbide in case of heating above 700 °C. A great amount of attention was paid to the parameters used during the centrifugal casting process. The results showed that adjusting the proportion of SiC particles within the composite allows us to obtain values of the thermal expansion coefficient within previously established limits. The present work demonstrates that the coating of SiC particles covered with a thin layer of metallic Cu creates the conditions to easily incorporate them into the molten Al mass, thus obtaining FGMs with controlled properties.
Keywords: functionally graded materials; aluminum alloy-SiC composites; copper films; centrifugal casting functionally graded materials; aluminum alloy-SiC composites; copper films; centrifugal casting

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MDPI and ACS Style

Milosan, I.; Bedő, T.; Gabor, C.; Munteanu, D.; Pop, M.A.; Catana, D.; Cosnita, M.; Varga, B. Characterization of Aluminum Alloy–Silicon Carbide Functionally Graded Materials Developed by Centrifugal Casting Process. Appl. Sci. 2021, 11, 1625. https://doi.org/10.3390/app11041625

AMA Style

Milosan I, Bedő T, Gabor C, Munteanu D, Pop MA, Catana D, Cosnita M, Varga B. Characterization of Aluminum Alloy–Silicon Carbide Functionally Graded Materials Developed by Centrifugal Casting Process. Applied Sciences. 2021; 11(4):1625. https://doi.org/10.3390/app11041625

Chicago/Turabian Style

Milosan, Ioan, Tibor Bedő, Camelia Gabor, Daniel Munteanu, Mihai Alin Pop, Dorin Catana, Mihaela Cosnita, and Béla Varga. 2021. "Characterization of Aluminum Alloy–Silicon Carbide Functionally Graded Materials Developed by Centrifugal Casting Process" Applied Sciences 11, no. 4: 1625. https://doi.org/10.3390/app11041625

APA Style

Milosan, I., Bedő, T., Gabor, C., Munteanu, D., Pop, M. A., Catana, D., Cosnita, M., & Varga, B. (2021). Characterization of Aluminum Alloy–Silicon Carbide Functionally Graded Materials Developed by Centrifugal Casting Process. Applied Sciences, 11(4), 1625. https://doi.org/10.3390/app11041625

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