Fabrication of Al-CNT composite with high hardness and electrical conductivity by controlling Al4C3 formation

Kim, Dasom; Hirayama, Yusuke; Liu, Zheng; Takagi, Kenta; Kobashi, Makoto

doi:10.1016/j.jallcom.2023.169102

Cited by 18 publications

(1 citation statement)

References 55 publications

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“…The hardness value is within the range of 50-75 Hv due to better distribution of Cu and MWCNT in the Al matrix by SSBM and MSBM. CNT addition improves the hardness of Al-MMC [50]. MSBM composite achieved a higher hardness value than SSBM composite due to more uniform dispersion of CNT and lower structural damage.…”

Section: Hardnessmentioning

confidence: 97%

Electro-thermal and mechanical property analysis of powder metallurgy processed, multi-stage ball milled aluminium-copper-multi walled carbon nanotube composite

Kundu,

Mondal

2024

Eng. Res. Express

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Aluminium Metal Matrix Composite (Al-MMC) is a favourable option for industries like automotive, aerospace, sports equipment, electronic packaging and renewable energy because of its impressive strength-to-weight ratio, effective thermal and electrical conductivity, abundant availability and reasonable cost of aluminium. Carbon nanotube (CNT) reinforced Al-MMC is popular among researchers due to its impressive strength and stiffness. The electrical and thermal conductivity of Al-CNT is a less focused field with challenges like uniform dispersion and structural integrity of CNT depending on the manufacturing process. In this paper, a novel method of Multistage ball milling (MSBM) was introduced to develop a powder metallurgy processed Al-MMC, consisting of 5-weight percentage (5 wt%) of copper (Cu) and 0.5 to 1.5 volume percentage (0.5–1.5 vol%) multi-walled carbon nanotubes (MWCNT). In MSBM, mixing was done in two stages with two different rpms of the ball mill to add the advantages of flake powder metallurgy with lower chances of structural damage and the agglomeration of CNT. Mechanical, electrical, thermal, and microstructure characteristics of the fixed-speed single-stage ball milling (SSBM) process and the MSBM were compared. MSBM-processed Al-5Cu-0.5CNT composites showed higher electrical conductivity (15.03%), thermal conductivity (5.88%) and hardness (9.68%) than SSBM-processed composites. Al-5Cu-0.5CNT developed by the MSBM process achieved superior electrical and thermal conductivity, surpassing pure sintered Al by 138.45% and 9.39%, respectively.

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Section: Hardnessmentioning

confidence: 97%

Electro-thermal and mechanical property analysis of powder metallurgy processed, multi-stage ball milled aluminium-copper-multi walled carbon nanotube composite

Kundu,

Mondal

2024

Eng. Res. Express

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Aluminum alloys for electrical engineering: a review

Czerwinski

2024

J Mater Sci

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High-performance conductors are essential for economically and environmentally sustainable ways of electricity transfer in modern infrastructure, manufacturing and transportation, including electric vehicles. This report reviews the aluminum conductors, their fundamentals, classification and utilization markets, focusing on metallurgical characteristics of present commercial solutions and the strategy of future development directions. The inherent features of aluminum, both beneficial and detrimental, for electrical engineering are emphasized along with alloying concepts that provide the accelerated decomposition of matrix solid solution to minimize the electron scattering. Development activities are assessed of new generation of aluminum conductors that in addition to alloying utilize novel processing techniques such as ultra-fast crystallization, severe plastic deformation and complex thermomechanical treatments aiming at grain reduction to nanometer scale, crystallographic texture control and grain boundary engineering. Transition metals and rare earths are considered as the promising alloying candidates for high-strength conductors having superior thermal stability with extra importance given to immiscible systems of Al–Ce, Al–La and Al–Y along with multiply additions, combined to generate the synergy effects. The composites with cladding configuration and particulate reinforcement including via carbon-type strengtheners are discussed as the effective solutions of advanced conductors. A variety of strategies that aim at overcoming the strength–conductivity trade-off in conductor materials are presented throughout the report. Graphical abstract

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Effect of Re-sintering Temperature and Carbon Nanotube Content on Mechanical Behavior Al-CNTs Nanocomposites

Yarahmadi,

Mohammadian Semnani,

Abdoos

2024

J. of Materi Eng and Perform

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Fabrication of Al-CNT composite with high hardness and electrical conductivity by controlling Al4C3 formation

Cited by 18 publications

References 55 publications

Electro-thermal and mechanical property analysis of powder metallurgy processed, multi-stage ball milled aluminium-copper-multi walled carbon nanotube composite

Electro-thermal and mechanical property analysis of powder metallurgy processed, multi-stage ball milled aluminium-copper-multi walled carbon nanotube composite

Aluminum alloys for electrical engineering: a review

Effect of Re-sintering Temperature and Carbon Nanotube Content on Mechanical Behavior Al-CNTs Nanocomposites

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