Journal
CARBON
Volume 48, Issue 13, Pages 3700-3707Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2010.06.013
Keywords
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Funding
- Korea Science and Engineering Foundation [2009-0076532]
- Second Stage of Brain Korea 21 Project
- National Research Foundation of Korea [2009-0076532] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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A method is explored for the development of nano-network structures in aluminum-based composites containing C-60-fullerenes by annealing at 500 degrees C. During annealing, although carbon atoms are decomposed from fullerenes attempting to form carbides, they cannot readily form carbides because C-60-fullerenes are individually dispersed and the driving force for long-range diffusion of carbon atoms is not sufficient at 500 degrees C. Carbon atoms rather occupy the interstices of aluminum, providing a meta-stable supersaturated aluminum phase with distorted crystal structures. The supersaturated aluminum phases grow with a strong anisotropy derived from lattice mismatch, meet neighboring phases, and then self-assemble into network structures. These nano-scale network structures are extremely stable at 500 degrees C, and offer significant potential for the development of structural aluminum matrix composites with a GPa-level strength. (C) 2010 Elsevier Ltd. All rights reserved.
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