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Dispersion of carbon nanotubes in aluminum improves radiation resistance

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Title
Dispersion of carbon nanotubes in aluminum improves radiation resistance
Author(s)
So K.P.; Chen D.; Kushima A.; Li M.; Kim S.; Yang Y.; Wang Z.; Jong Gil Park; Young Hee Lee; Gonzalez R.I.; Kiwi M.; Bringa E.M.; Shao L.; Li J.
Publication Date
2016-04
Journal
NANO ENERGY, v.22, no., pp.319 - 327
Publisher
Elsevier BV
Abstract
We can mass-produce metal/carbon nanotube (CNT) composites that show improved radiation tolerance. The 0.5 wt% Al+CNT composite showed improved tensile strength without reduction of tensile ductility before radiation, and reduced void/pore generation and radiation embrittlement at high displacements per atom (DPA). Under helium ion irradiation up to 72 DPA, the 1D carbon nanostructures survive, while sp2 bonded graphene transforms to sp3 tetrahedral amorphous carbon. Self-ion (Al) irradiation converts CNTs to a metastable form of Al4C3, but still as slender 1D nanorods with prolific internal interfaces that catalyze recombination of radiation defects, reducing radiation hardening and porosity generation. The 1D fillers may also form percolating paths of nano-chimneys that outgas the accumulated helium and other fission gases, providing an essential solution to the gas accumulation problem. © 2016 Elsevier Ltd
URI
https://pr.ibs.re.kr/handle/8788114/2539
ISSN
2211-2855
Appears in Collections:
Center for Integrated Nanostructure Physics(나노구조물리 연구단) > Journal Papers (저널논문)
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