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논문 기본 정보

자료유형
학술저널
저자정보
장준호 (Chonbuk National University)
저널정보
한양대학교 세라믹공정연구센터 Journal of Ceramic Processing Research Journal of Ceramic Processing Research 제18권 제6호
발행연도
2017.6
수록면
451 - 456 (6page)
DOI
http://dx.doi.org/

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Cu-coated graphite powder for weight reduction and a high thermal conductivity was fabricated using a chemical reactionprocess. First, 4 g of graphite powders, which was treated using an activation and wetting process, was added to an aqueoussolution of copper (Cu) sulfate; also, zinc (Zn) powders (such as 35, 40, 45, and 50 wt.%) was added as a transposition solventto the aqueous solution and stirred for 1 hr for a transposition reaction. After the addition of the fabricated powders mixtureto a 75 wt.% DI water: 10 wt.% H3PO4 : 10 wt.% H2SO4 : 5 wt.% mixture, tartaric acid was added to the aqueous solutionto produce a passivating oxide film, followed by a drying for 24 hrs. The particle size of the fabricated powder, which is coarserthan the initial graphite powder, is approximately 3 μm to 4 μm, and the low-intensity oxide peak of the XRD pattern of thefabricated powders is due to the low Zn powder content. With the use of the Cu-coated graphite powder, Cu-coated graphitesintered bodies were fabricated using a pulse current activated sintering (PCAS) process. The Cu-graphite sintered bodieswere sintered with heating rate of 60, 100 and 150 oC/min, respectively. The Cu-coated graphite powders and compacts wereevaluated using FE-SEM, EDS, XRD, a particle analysis, and the Archimedes method.

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