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논문 기본 정보

자료유형
학술저널
저자정보
S. Shakibhamedan (University of Tehran) S. Sheibani (University of Tehran) A. Ataie (University of Tehran)
저널정보
대한금속·재료학회 Metals and Materials International Metals and Materials International Vol.27 No.10
발행연도
2021.10
수록면
4,271 - 4,285 (15page)
DOI
10.1007/s12540-020-00816-4

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In this paper, the effects of Cu coating of carbon nanotube (CNTs) as reinforcement on structural, microstructural, physicaland mechanical properties of Cu?3 wt%CNT nanocomposite were investigated. CNTs were coated by Cu using the electrolesstechnique for 1 and 2 h. Bulk nanocomposite samples were produced by spark plasma sintering of a mechanically milledpowder mixture of Cu and CNT. Kinetic study showed a nucleation and growth mechanism for the Cu coating process. Microstructural characterization showed that the coated CNTs dispersed more homogeneously in the powder mixture. Resultsalso revealed that 1 h coating of CNTs led to the higher relative density and thermal properties. The coating process increased62 Brinell hardness (BHN) in hardness, 14% IACS in electrical conductivity for Cu?CNT nanocomposite. Transmissionelectron microscopy analysis showed a strong bonding between CNT and Cu matrix within the distinguishable interface. About 20 MPa increase in shear strength of nanocomposite was observed by 1 h coating of CNTs. Also, the fracture surfacesexhibit changes in the mode of fracture by well-bonded CNTs with the Cu matrix. The coefficient of thermal expansion andthermal distortion parameter revealed 12.7 ppm/k and 0.037 ppm.m/w for the sample including 1 h coated CNT, respectively.

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