Nanomechanical Behavior of Multi-Walled Carbon Nanotubes Particulate Reinforced Aluminum Nanocomposites Prepared by Ball Milling

Ostovan, Farhad; Матори, Хамирул Амин; Toozandehjani, Meysam; Oskoueian, Arshin; Yusoff, Hamdan Mohamed; Yunus, Robiah; Ariff, Azmah Hanim Mohamed

doi:10.3390/ma9030140

Cited by 28 publications

(9 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, some level of defects should have been introduced into the MWCNT structure, which would accord with other authors [38]. However, it seems that the assisted sonication method is much less aggressive to MWCNTs than ball milling [41], and if this ratio is slightly greater than that of the ratio reported in the related study [24], this can be attributed to the associated effect of the powder characteristics (different 4S). Table 3; and (b) assisted sonication method, as seen in No.…”

Section: Discussionsupporting

confidence: 74%

“…The Raman analysis revealed the consequences of this effect, i.e., an association of bands shifting over the entire process, and this was pronounced for the G band in the presence of the Al powder. Band shifting due to the strain has already been mentioned in related studies [38,40,41]. Moreover, the I D /I G ratio, as a criterion for determining the disorder level [30], decreased for the MWCNTs in the absence of powder (Table 6), and the G band upshifted a little.…”

Section: Discussionmentioning

confidence: 52%

See 1 more Smart Citation

Effect of Reinforcement Type and Dispersion on the Hardening of Sintered Pure Aluminium

Emadinia

Vieira

2018

Metals

View full text Add to dashboard Cite

The homogeneity of dispersion and reinforcing of pure aluminium by multi-walled carbon nanotubes (MWCNT) through the application of a high speed sonication (340 Hz) assisted by ultrasonication (35 kHz) was evaluated, this method was termed “assisted sonication”. Other reinforcements (graphene, nanoalumina, and ultrafine tungsten carbide) were used for comparison with the MWCNT. The hardness measurement enabled us to evaluate the strengthening effect of the reinforcements. Raman analysis was the technique selected to evaluate the integrity of MWCNTs during dispersion. The scanning and transmission electron microscopies revealed the dispersion and microstructure of the nanoreinforcements and nanocomposites. After applying the assisted sonication, the MWCNTs were detangled without exfoliation. The integrity of MWCNTs was strongly influenced by the presence of the aluminum powder during dispersion. The application of the assisted sonication method reduced the size of the aggregates in the matrix, in comparison with the sonication technique. Ultrafine tungsten carbide, with a 1 vol. %, was the reinforcement that more effectively hardened aluminum due to a good dispersion of the reinforcement, grain refinement and the formation of Al12W phase.

show abstract

Section: Discussionsupporting

confidence: 74%

Section: Discussionmentioning

confidence: 52%

Effect of Reinforcement Type and Dispersion on the Hardening of Sintered Pure Aluminium

Emadinia

Vieira

2018

Metals

View full text Add to dashboard Cite

show abstract

“…Conversely, nanocomposites milled for the longest milling time of 12 h shows the lowest displacement, indicating the maximum Young’s modulus under the same indentation conditions. The lower displacement or lower indention depth in nanoindentation measurements represents the strengthening of the matrix in the presence of Al 2 O 3 nanoparticles [33]. Then, the load-displacement curve of Al-5Al 2 O 3 shifts toward the left and lower displacements by increasing the milling time due to strengthening of the matrix.…”

Section: Resultsmentioning

confidence: 99%

Effect of Milling Time on the Microstructure, Physical and Mechanical Properties of Al-Al2O3 Nanocomposite Synthesized by Ball Milling and Powder Metallurgy

et al. 2017

Self Cite

View full text Add to dashboard Cite

The effect of milling time on the morphology, microstructure, physical and mechanical properties of pure Al-5 wt % Al2O3 (Al-5Al2O3) has been investigated. Al-5Al2O3 nanocomposites were fabricated using ball milling in a powder metallurgy route. The increase in the milling time resulted in the homogenous dispersion of 5 wt % Al2O3 nanoparticles, the reduction of particle clustering, and the reduction of distances between the composite particles. The significant grain refining during milling was revealed which showed as a reduction of particle size resulting from longer milling time. X-Ray diffraction (XRD) analysis of the nanocomposite powders also showed that designated ball milling contributes to the crystalline refining and accumulation of internal stress due to induced severe plastic deformation of the particles. It can be argued that these morphological and microstructural variations of nanocomposite powders induced by designated ball milling time was found to contribute to an improvement in the density, densification, micro-hardness (HV), nano-hardness (HN), and Young’s modulus (E) of Al-5Al2O3 nanocomposites. HV, HN, and E values of nanocomposites were increased by ~48%, 46%, and 40%, after 12 h of milling, respectively.

show abstract

“…Among these, the CNTs stand out for their extraordinary properties, making them highly attractive for use as reinforcements. CNTs have been used to reinforce several metallic matrices, such as aluminum [6,7], nickel [8,9], copper [10,11], titanium [12] and magnesium [13,14], due to their extraordinary mechanical properties and excellent electrical conductivity [15,16].…”

Section: Introductionmentioning

confidence: 99%

Aluminum and Nickel Matrix Composites Reinforced by CNTs: Dispersion/Mixture by Ultrasonication

Simões

Viana

Reis

et al. 2017

Metals

View full text Add to dashboard Cite

The main challenge in the production of metal matrix composites reinforced by carbon nanotubes (CNTs) is the development of a manufacturing process ensuring the dispersion of nanoparticles without damaging them, and the formation of a strong bond with the metallic matrix to achieve an effective load transfer, so that the maximum reinforcement effect of CNTs will be accomplished. This research focuses on the production by powder metallurgy of aluminum and nickel matrix composites reinforced by CNTs, using ultrasonication as the dispersion and mixture process. Microstructural characterization of nanocomposites was performed by optical microscopy (OM), scanning and transmission electron microscopy (SEM and TEM), electron backscattered diffraction (EBSD) and high-resolution transmission electron microscopy (HRTEM). Microstructural characterization revealed that the use of ultrasonication as the dispersion and mixture process in the production of Al/CNT and Ni/CNT nanocomposites promoted the dispersion and embedding of individual CNT in the metallic matrices. CNT clusters at grain boundary junctions were also observed. The strengthening effect of the CNTs is shown by the increase in hardness for all nanocomposites. The highest hardness values were observed for Al/CNT and Ni/CNT nanocomposites, with a 1.00 vol % CNTs.

show abstract

Nanomechanical Behavior of Multi-Walled Carbon Nanotubes Particulate Reinforced Aluminum Nanocomposites Prepared by Ball Milling

Cited by 28 publications

References 30 publications

Effect of Reinforcement Type and Dispersion on the Hardening of Sintered Pure Aluminium

Effect of Reinforcement Type and Dispersion on the Hardening of Sintered Pure Aluminium

Effect of Milling Time on the Microstructure, Physical and Mechanical Properties of Al-Al2O3 Nanocomposite Synthesized by Ball Milling and Powder Metallurgy

Aluminum and Nickel Matrix Composites Reinforced by CNTs: Dispersion/Mixture by Ultrasonication

Contact Info

Product

Resources

About