Fabrication of Carbon Nanotube Reinforced Al2O3/Cr2O3 Nanocomposites by Coprecipitation Process

In this research, the effect of multi-walled carbon nanotubes (MWCNTs) on the alumina/chromia (Al2O3/Cr2O3) nanocomposites has been investigated. Al2O3/Cr2O3-MWCNTs nanocomposites with variable contents of Cr2O3 and MWCNTs were fabricated using coprecipitation process and followed by spark plasma s...

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Autor principal:	Hussein Alaa Jaber
Formato:	article
Lenguaje:	EN
Publicado:	Al-Khwarizmi College of Engineering – University of Baghdad 2017
Materias:	Al2O3/Cr2O3 nanocomposite MWCNTs coprecipitation process and spark plasma sintering (SPS) Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/4a5a1f641d1942e0b2fdbc1ef7fe1778
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spelling	oai:doaj.org-article:4a5a1f641d1942e0b2fdbc1ef7fe17782021-12-02T05:27:15ZFabrication of Carbon Nanotube Reinforced Al2O3/Cr2O3 Nanocomposites by Coprecipitation Process10.22153/kej.2016.08.0011818-11712312-0789https://doaj.org/article/4a5a1f641d1942e0b2fdbc1ef7fe17782017-12-01T00:00:00Zhttp://alkej.uobaghdad.edu.iq/index.php/alkej/article/view/323https://doaj.org/toc/1818-1171https://doaj.org/toc/2312-0789 In this research, the effect of multi-walled carbon nanotubes (MWCNTs) on the alumina/chromia (Al2O3/Cr2O3) nanocomposites has been investigated. Al2O3/Cr2O3-MWCNTs nanocomposites with variable contents of Cr2O3 and MWCNTs were fabricated using coprecipitation process and followed by spark plasma sintering. XRD analysis revealed a good crystallinity of sintered nanocomposites samples and there was only one phase presence of Al2O3-Cr2O3 solid solution. Density, Vickers microhardness, fracture toughness and fracture strength have been measured in the sintered samples. The results show that the relative density, microhardness and fracture strength of nanocomposites are significantly improved at low contents of Cr2O3 and MWCNTs. The increase of MWCNT’s content in the nanocomposites has adversely affected due to increasing the tangle and interaction of MWCNTs with each other, which leads to agglomeration in the nanocomposites. Increasing of Cr2O3 content in nanocomposites increases formation of Al2O3-Cr2O3 solid solution that actually requires the high sintering temperature to achieve good densification. The fracture toughness of Al2O3/Cr2O3-MWCNTs nanocomposites was enhanced by increasing the carbon nanotube content. Hussein Alaa JaberAl-Khwarizmi College of Engineering – University of BaghdadarticleAl2O3/Cr2O3 nanocompositeMWCNTscoprecipitation process and spark plasma sintering (SPS)Chemical engineeringTP155-156Engineering (General). Civil engineering (General)TA1-2040ENAl-Khawarizmi Engineering Journal, Vol 12, Iss 4 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Al2O3/Cr2O3 nanocomposite MWCNTs coprecipitation process and spark plasma sintering (SPS) Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	Al2O3/Cr2O3 nanocomposite MWCNTs coprecipitation process and spark plasma sintering (SPS) Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040 Hussein Alaa Jaber Fabrication of Carbon Nanotube Reinforced Al2O3/Cr2O3 Nanocomposites by Coprecipitation Process
description	In this research, the effect of multi-walled carbon nanotubes (MWCNTs) on the alumina/chromia (Al2O3/Cr2O3) nanocomposites has been investigated. Al2O3/Cr2O3-MWCNTs nanocomposites with variable contents of Cr2O3 and MWCNTs were fabricated using coprecipitation process and followed by spark plasma sintering. XRD analysis revealed a good crystallinity of sintered nanocomposites samples and there was only one phase presence of Al2O3-Cr2O3 solid solution. Density, Vickers microhardness, fracture toughness and fracture strength have been measured in the sintered samples. The results show that the relative density, microhardness and fracture strength of nanocomposites are significantly improved at low contents of Cr2O3 and MWCNTs. The increase of MWCNT’s content in the nanocomposites has adversely affected due to increasing the tangle and interaction of MWCNTs with each other, which leads to agglomeration in the nanocomposites. Increasing of Cr2O3 content in nanocomposites increases formation of Al2O3-Cr2O3 solid solution that actually requires the high sintering temperature to achieve good densification. The fracture toughness of Al2O3/Cr2O3-MWCNTs nanocomposites was enhanced by increasing the carbon nanotube content.
format	article
author	Hussein Alaa Jaber
author_facet	Hussein Alaa Jaber
author_sort	Hussein Alaa Jaber
title	Fabrication of Carbon Nanotube Reinforced Al2O3/Cr2O3 Nanocomposites by Coprecipitation Process
title_short	Fabrication of Carbon Nanotube Reinforced Al2O3/Cr2O3 Nanocomposites by Coprecipitation Process
title_full	Fabrication of Carbon Nanotube Reinforced Al2O3/Cr2O3 Nanocomposites by Coprecipitation Process
title_fullStr	Fabrication of Carbon Nanotube Reinforced Al2O3/Cr2O3 Nanocomposites by Coprecipitation Process
title_full_unstemmed	Fabrication of Carbon Nanotube Reinforced Al2O3/Cr2O3 Nanocomposites by Coprecipitation Process
title_sort	fabrication of carbon nanotube reinforced al2o3/cr2o3 nanocomposites by coprecipitation process
publisher	Al-Khwarizmi College of Engineering – University of Baghdad
publishDate	2017
url	https://doaj.org/article/4a5a1f641d1942e0b2fdbc1ef7fe1778
work_keys_str_mv	AT husseinalaajaber fabricationofcarbonnanotubereinforcedal2o3cr2o3nanocompositesbycoprecipitationprocess
_version_	1718400408338038784

Fabrication of Carbon Nanotube Reinforced Al2O3/Cr2O3 Nanocomposites by Coprecipitation Process

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