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Dispersion and Damage of Carbon Nanotubes in Carbon Nanotube/7055Al Composites During High-Energy Ball Milling Process
Bi, S.; Xiao, B. L.; Ji, Z. H.; Liu, B. S.; Liu, Z. Y.; Ma, Z. Y.
2020-10-08
Source PublicationACTA METALLURGICA SINICA-ENGLISH LETTERS
AbstractHigh-energy ball milling (HEBM) combined with powder metallurgy route was used to fabricate carbon nanotube (CNT) reinforced 7055Al composites. Two powder morphology evolution processes (HEBM-1 and HEBM-2) were designed to investigate the dispersion and damage of CNTs during HEBM process. HEBM-1 evolution process involved powder flattening, cold-welding and fracture, while HEBM-2 evolution process consisted of powder flattening and fracture. For HEBM-1, the repetitive fracture and cold-welding process was effective for dispersing CNTs. However, the powder flattening process in HEBM-2 was unsuccessful in dispersing CNTs due to two reasons: (1) the thickness of flaky Al powders exceeded the critical value, and (2) the clustered CNTs embedded in flaky Al powders could not be unravelled. Because of the broadening of D band and the appearance of a new defect-related D' band, product ofI(D)/I(G)and full width half maximum of D band, rather thanI(D)/I-G, was used to evaluate the actual damage of CNTs. It indicates that the damage of CNTs was severe in powder flattening and fracture stages, while the damage of CNTs was small in powder cold-welding stage.
DOI10.1007/s40195-020-01138-5
WOS IDWOS:000578527900001
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Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/82448
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Bi, S.,Xiao, B. L.,Ji, Z. H.,et al. Dispersion and Damage of Carbon Nanotubes in Carbon Nanotube/7055Al Composites During High-Energy Ball Milling Process[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2020.
APA Bi, S.,Xiao, B. L.,Ji, Z. H.,Liu, B. S.,Liu, Z. Y.,&Ma, Z. Y..(2020).Dispersion and Damage of Carbon Nanotubes in Carbon Nanotube/7055Al Composites During High-Energy Ball Milling Process.ACTA METALLURGICA SINICA-ENGLISH LETTERS.
MLA Bi, S.,et al."Dispersion and Damage of Carbon Nanotubes in Carbon Nanotube/7055Al Composites During High-Energy Ball Milling Process".ACTA METALLURGICA SINICA-ENGLISH LETTERS (2020).
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