Enhanced thermal diffusivity of copperbased composites using copper-RGO sheets
- Authors
- Kim, Sangwoo; Kwon, Hyouk-Chon; Lee, Dohyung; Lee, Hyo-Soo
- Issue Date
- Nov-2017
- Publisher
- KOREAN INST METALS MATERIALS
- Keywords
- nanostructured materials; powder processing; sintering; thermal analysis; thermal diffusivity
- Citation
- METALS AND MATERIALS INTERNATIONAL, v.23, no.6, pp.1144 - 1149
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- METALS AND MATERIALS INTERNATIONAL
- Volume
- 23
- Number
- 6
- Start Page
- 1144
- End Page
- 1149
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/8536
- DOI
- 10.1007/s12540-017-7088-8
- ISSN
- 1598-9623
- Abstract
- The synthesis of copper-reduced graphene oxide (RGO) sheets was investigated in order to control the agglutination of interfaces and develop a manufacturing process for copper-based composite materials based on spark plasma sintering. To this end, copper-GO (graphene oxide) composites were synthesized using a hydrothermal method, while the copper-reduced graphene oxide composites were made by hydrogen reduction. Graphene oxide-copper oxide was hydrothermally synthesized at 80 A degrees C for 5 h, and then annealed at 800 A degrees C for 5 h in argon and hydrazine rate 9:1 to obtain copper-RGO flakes. The morphology and structure of these copper-RGO sheets were characterized using scanning electron microscopy, transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy and Raman spectroscopy. After vibratory mixing of the synthesized copper-RGO composites (0-2 wt%) with copper powder, they were sintered at 600 A degrees C for 5 min under100 MPa of pressure by spark plasma sintering process. The thermal diffusivity of the resulting sintered composite was characterized by the laser flash method at 150 A degrees C.
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