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Open AccessArticle

Characterization of Copper–Graphite Composites Fabricated via Electrochemical Deposition and Spark Plasma Sintering

1
Department of Advanced Materials Engineering, Keimyung University, Daegu 42601, Korea
2
Advanced Materials Research Group, Daegu Mechatronics and Materials Institute (DMI), Daegu 42714, Korea
3
Department of Materials Science and Engineering, Hongik University, Sejong 30016, Korea
4
Department of Materials Engineering, Korea Aerospace University, Goyang 10540, Korea
5
Department of Materials Science and Metallurgical Engineering, Kyungpook National University (KNU), Daegu 41566, Korea
*
Authors to whom correspondence should be addressed.
Appl. Sci. 2019, 9(14), 2853; https://doi.org/10.3390/app9142853
Received: 27 June 2019 / Revised: 15 July 2019 / Accepted: 15 July 2019 / Published: 17 July 2019
(This article belongs to the Special Issue Metal Matrix Composite)
In the present study, we have demonstrated a facile and robust way for the fabrication of Cu-graphite composites (CGCs) with spatially-aligned graphite layers. The graphite layers bonded to the copper matrix and the resulting composite structure were entirely characterized. The preferential orientation and angular displacement of the nano-sized graphite fiber reinforcements in the copper matrix were clarified by polarized Raman scattering. Close investigation on the change of the Raman G-peak frequency with the laser excitation power provided us with a manifestation of the structural and electronic properties of the Cu-graphite composites (CGCs) with spatially-distributed graphite phases. High resolution transmission electron microscopy (TEM) observation and Raman analysis revealed that reduced graphite oxide (rGO) phase existed at the CGC interface. This work is highly expected to provide a fundamental way of understanding how a rGO phase can be formed at the Cu-graphite interface, thus finally envisioning usefulness of the CGCs for thermal management materials in electronic applications. View Full-Text
Keywords: copper–graphite composites; anisotropic layered structure; spark plasma sintering; Raman spectroscopy copper–graphite composites; anisotropic layered structure; spark plasma sintering; Raman spectroscopy
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MDPI and ACS Style

Byun, M.; Kim, D.; Sung, K.; Jung, J.; Song, Y.-S.; Park, S.; Son, I. Characterization of Copper–Graphite Composites Fabricated via Electrochemical Deposition and Spark Plasma Sintering. Appl. Sci. 2019, 9, 2853.

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