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Thermal analysis of Al + 0.1% CNT ribbon
The objective of this work is a dilatometric study of Al + 0.1% of multiwall carbon nanotubes nanocomposite material (NCM) in three directions: X - parallel to the rolling direction; Y - perpendicular to the rolling direction and (Z) perpendicular to the ribbon plane. NCM specimens were made in the...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer US
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4424219/ https://www.ncbi.nlm.nih.gov/pubmed/25977649 http://dx.doi.org/10.1186/s11671-015-0878-3 |
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author | Revo, Sergiy Hamamda, Smail Ivanenko, Kateryna Boshko, Oleh Djarri, Ahmed Boubertakh, Abdelhamid |
author_facet | Revo, Sergiy Hamamda, Smail Ivanenko, Kateryna Boshko, Oleh Djarri, Ahmed Boubertakh, Abdelhamid |
author_sort | Revo, Sergiy |
collection | PubMed |
description | The objective of this work is a dilatometric study of Al + 0.1% of multiwall carbon nanotubes nanocomposite material (NCM) in three directions: X - parallel to the rolling direction; Y - perpendicular to the rolling direction and (Z) perpendicular to the ribbon plane. NCM specimens were made in the form of a 0.1-mm-thick ribbon. The temperature range used for measurements was 20°C to 600°C. The obtained results show that presence of nanotubes affects the thermal expansion coefficient (TEC) measured in different directions. α(x)(T) and α(y)(T) - TEC plots as a function of temperature along X and Y directions, respectively - have substantially the same shape and overlap in the area of 400°C. The expansion along X-axis becomes greater than along Y-axis below this temperature value. It is clear that the coefficient α(z)(T) is lower than α(x)(T) and α(y)(T) over the entire temperature range. The expansion along Z-axis is smaller compared to that along X- and Y-axes. This behaviour suggests that there is a strong interatomic interaction along this direction (Z). α(z)(T) becomes monotonous and constant and is equal to 8 × 10(−6)°C(−1) at temperatures above 300°C. Such order of magnitude had not been obtained in earlier studies of aluminium alloys. The obtained TEC shows high anisotropy, which grows with the increase of temperature. The heat flow (differential scanning calorimetry, (DSC)) of Al + 0.1% carbon nanotubes (CNT) NCM is more intense compared to that of pure aluminium produced in similar conditions. The two representative curves have similar shape and are almost entirely overlapped. The thermogravimetry results confirm those of DSC. The Raman spectrum of this nanomaterial shows that intensity of G and D bonds is significantly increased compared to that of the pure material. The infrared diagram also confirms that in this case the mentioned bonds are more intensive NCM. The tensile strength measurements (σB) of the studied NCM also demonstrate that its value increases from 140 ± 10 MPa for Al without nanotubes to 200 ± 10 MPa for NCM. |
format | Online Article Text |
id | pubmed-4424219 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | Springer US |
record_format | MEDLINE/PubMed |
spelling | pubmed-44242192015-05-14 Thermal analysis of Al + 0.1% CNT ribbon Revo, Sergiy Hamamda, Smail Ivanenko, Kateryna Boshko, Oleh Djarri, Ahmed Boubertakh, Abdelhamid Nanoscale Res Lett Nano Express The objective of this work is a dilatometric study of Al + 0.1% of multiwall carbon nanotubes nanocomposite material (NCM) in three directions: X - parallel to the rolling direction; Y - perpendicular to the rolling direction and (Z) perpendicular to the ribbon plane. NCM specimens were made in the form of a 0.1-mm-thick ribbon. The temperature range used for measurements was 20°C to 600°C. The obtained results show that presence of nanotubes affects the thermal expansion coefficient (TEC) measured in different directions. α(x)(T) and α(y)(T) - TEC plots as a function of temperature along X and Y directions, respectively - have substantially the same shape and overlap in the area of 400°C. The expansion along X-axis becomes greater than along Y-axis below this temperature value. It is clear that the coefficient α(z)(T) is lower than α(x)(T) and α(y)(T) over the entire temperature range. The expansion along Z-axis is smaller compared to that along X- and Y-axes. This behaviour suggests that there is a strong interatomic interaction along this direction (Z). α(z)(T) becomes monotonous and constant and is equal to 8 × 10(−6)°C(−1) at temperatures above 300°C. Such order of magnitude had not been obtained in earlier studies of aluminium alloys. The obtained TEC shows high anisotropy, which grows with the increase of temperature. The heat flow (differential scanning calorimetry, (DSC)) of Al + 0.1% carbon nanotubes (CNT) NCM is more intense compared to that of pure aluminium produced in similar conditions. The two representative curves have similar shape and are almost entirely overlapped. The thermogravimetry results confirm those of DSC. The Raman spectrum of this nanomaterial shows that intensity of G and D bonds is significantly increased compared to that of the pure material. The infrared diagram also confirms that in this case the mentioned bonds are more intensive NCM. The tensile strength measurements (σB) of the studied NCM also demonstrate that its value increases from 140 ± 10 MPa for Al without nanotubes to 200 ± 10 MPa for NCM. Springer US 2015-04-08 /pmc/articles/PMC4424219/ /pubmed/25977649 http://dx.doi.org/10.1186/s11671-015-0878-3 Text en © Revo et al.; licensee Springer. 2015 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. |
spellingShingle | Nano Express Revo, Sergiy Hamamda, Smail Ivanenko, Kateryna Boshko, Oleh Djarri, Ahmed Boubertakh, Abdelhamid Thermal analysis of Al + 0.1% CNT ribbon |
title | Thermal analysis of Al + 0.1% CNT ribbon |
title_full | Thermal analysis of Al + 0.1% CNT ribbon |
title_fullStr | Thermal analysis of Al + 0.1% CNT ribbon |
title_full_unstemmed | Thermal analysis of Al + 0.1% CNT ribbon |
title_short | Thermal analysis of Al + 0.1% CNT ribbon |
title_sort | thermal analysis of al + 0.1% cnt ribbon |
topic | Nano Express |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4424219/ https://www.ncbi.nlm.nih.gov/pubmed/25977649 http://dx.doi.org/10.1186/s11671-015-0878-3 |
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