Enhanced thermal diffusivity of copperbased composites using copper-RGO sheets
- Title
- Enhanced thermal diffusivity of copperbased composites using copper-RGO sheets
- Author
- 이도형
- Keywords
- nanostructured materials; powder processing; sintering; thermal analysis; thermal diffusivity
- Issue Date
- 2017-11
- Publisher
- KOREAN INST METALS MATERIALS
- Citation
- METALS AND MATERIALS INTERNATIONAL, v. 23, No. 6, Page. 1144-1149
- 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.
- URI
- https://link.springer.com/article/10.1007/s12540-017-7088-8https://repository.hanyang.ac.kr/handle/20.500.11754/99225
- ISSN
- 1598-9623; 2005-4149
- DOI
- 10.1007/s12540-017-7088-8
- Appears in Collections:
- COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MECHANICAL ENGINEERING(기계공학과) > Articles
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