Al-based materials with enhanced mechanical damping properties are of great interest in aerospace and automotive industries as engineering materials for critical components that suffer from severe dynamic environment. In this report, we developed Al/C60-fullerene composites to increase damping capacity by the supersaturated Al-C phases. Carbon atoms, dissolved from individually dispersed C60-fullerenes, are intercalated into the Al interstitial sites, producing Al-C phases with expanded lattice structures. These novel nanostructures exhibit a superior mechanical damping behavior compared to monolithic Al, throughout the temperature range of room temperature to 350 °C. The present approach to control the lattice structure thus represents a new engineering paradigm for atomic-level design of lightweight structural components.
Bibliographical noteFunding Information:
This work was supported by the Korea Science and Engineering Foundation Grant (No. NRF-2013R1A2A2A01068931 ) and the Yonsei University Research Fund of 2014. S. Shiko and H.J. Choi acknowledge the support by the Korea-Belarus joint research program ( 2012-057348 ) and H.J. Choi also acknowledges the support by Basic Science Research Program ( 2009-0093814 and 2013R1A−A3005759 ) through the National Research Foundation of Korea (NRF) funded by the Ministry of Education .
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All Science Journal Classification (ASJC) codes
- Ceramics and Composites
- Mechanics of Materials
- Mechanical Engineering
- Industrial and Manufacturing Engineering