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Title: Al–CNT–Ni composite with significantly increased strength and hardness

Abstract

Here, aluminium–carbon nanotube–nickel (Al–CNT–Ni) composite was prepared by powder metallurgy from pure Al powder and Ni-encapsulated CNT. Previously, carbon nanotubes were coated with nickel following ultraviolet-assisted electroless deposition method. Tensile strength and hardness of the composites were found to increase in proportion to the CNTs addition. For an addition of 7 wt.% Ni-coated CNTs containing 2.5 wt.% nanotubes of 8–15 nm diameter (Ni to CNT ratio was 1–0.357), resultant tensile and yield strength were increased by 129.26% and 157.48% respectively compared to pure aluminium. Hardness was also increased by 171.39%. These results were obtained while conventional sintering was followed by further consolidation by Hot Isostatic Pressing (HIP). Enhanced mechanical properties are attributed to the well dispersion of CNTs in aluminium matrix and strong interfacial bonding between CNT and aluminium. Lastly, well dispersion of CNTs and strong interfacial bonding was resulted from the uniform Ni-encapsulation as verified by red shift in Raman Spectroscopy.

Authors:
ORCiD logo [1];  [2]
  1. Bangladesh Univ. of Engineering and Technology, Dhaka (Bangladesh); Univ. of Central Florida, Orlando, FL (United States)
  2. Univ. of Central Florida, Orlando, FL (United States)
Publication Date:
Research Org.:
Univ. of Central Florida, Orlando, FL (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Energy Efficiency Office. Advanced Manufacturing Office; National Science Foundation (NSF)
OSTI Identifier:
1581646
Grant/Contract Number:  
EE0007864
Resource Type:
Accepted Manuscript
Journal Name:
SN Applied Sciences
Additional Journal Information:
Journal Volume: 1; Journal Issue: 6; Journal ID: ISSN 2523-3963
Publisher:
Springer Nature
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; 36 MATERIALS SCIENCE; conducting materials; fabrication and characterization; Al/CNT composite; Ni-encapsulation; electroless deposition; interfacial bonding; Raman spectroscopy

Citation Formats

Billah, Md Muktadir, and Chen, Quanfang. Al–CNT–Ni composite with significantly increased strength and hardness. United States: N. p., 2019. Web. doi:10.1007/s42452-019-0530-4.
Billah, Md Muktadir, & Chen, Quanfang. Al–CNT–Ni composite with significantly increased strength and hardness. United States. https://doi.org/10.1007/s42452-019-0530-4
Billah, Md Muktadir, and Chen, Quanfang. Mon . "Al–CNT–Ni composite with significantly increased strength and hardness". United States. https://doi.org/10.1007/s42452-019-0530-4. https://www.osti.gov/servlets/purl/1581646.
@article{osti_1581646,
title = {Al–CNT–Ni composite with significantly increased strength and hardness},
author = {Billah, Md Muktadir and Chen, Quanfang},
abstractNote = {Here, aluminium–carbon nanotube–nickel (Al–CNT–Ni) composite was prepared by powder metallurgy from pure Al powder and Ni-encapsulated CNT. Previously, carbon nanotubes were coated with nickel following ultraviolet-assisted electroless deposition method. Tensile strength and hardness of the composites were found to increase in proportion to the CNTs addition. For an addition of 7 wt.% Ni-coated CNTs containing 2.5 wt.% nanotubes of 8–15 nm diameter (Ni to CNT ratio was 1–0.357), resultant tensile and yield strength were increased by 129.26% and 157.48% respectively compared to pure aluminium. Hardness was also increased by 171.39%. These results were obtained while conventional sintering was followed by further consolidation by Hot Isostatic Pressing (HIP). Enhanced mechanical properties are attributed to the well dispersion of CNTs in aluminium matrix and strong interfacial bonding between CNT and aluminium. Lastly, well dispersion of CNTs and strong interfacial bonding was resulted from the uniform Ni-encapsulation as verified by red shift in Raman Spectroscopy.},
doi = {10.1007/s42452-019-0530-4},
journal = {SN Applied Sciences},
number = 6,
volume = 1,
place = {United States},
year = {Mon May 06 00:00:00 EDT 2019},
month = {Mon May 06 00:00:00 EDT 2019}
}

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