Staff View: Characterization and corrosion behavior evaluation of nanostructured TiO2 and Al2O3-13 wt.%TiO2 coatings on aluminum alloy prepared via high-velocity oxy-fuel spray

Characterization and corrosion behavior evaluation of nanostructured TiO2 and Al2O3-13 wt.%TiO2 coatings on aluminum alloy prepared via high-velocity oxy-fuel spray

In this study, nanostructured titania (TiO2; n-TO) and nanostructured alumina-titania (Al2O3-13 wt.%TiO2; n-ATO) coatings were successfully deposited on the 6061 aluminum alloy by applying the high-velocity oxy-fuel process. The n-TO coating showed limited pores or microcracks accompanied by both pa...

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Main Authors:	Bakhsheshi Rad, Hamid Reza, Daroonparvar, Mohammadreza, Mat Yajid, Muhamad Azizi, Kumar, Pankaj, Razzaghi, Mahmood, Ismail, Ahmad Fauzi, Sharif, Safian, Berto, Filippo
Format:	Article
Published:	Springer 2021
Subjects:	TP Chemical technology
Online Access:	http://eprints.utm.my/id/eprint/95537/ http://dx.doi.org/10.1007/s11665-020-05333-4
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spelling	my.utm.955372022-05-31T12:46:07Z http://eprints.utm.my/id/eprint/95537/ Characterization and corrosion behavior evaluation of nanostructured TiO2 and Al2O3-13 wt.%TiO2 coatings on aluminum alloy prepared via high-velocity oxy-fuel spray Bakhsheshi Rad, Hamid Reza Daroonparvar, Mohammadreza Mat Yajid, Muhamad Azizi Kumar, Pankaj Razzaghi, Mahmood Ismail, Ahmad Fauzi Sharif, Safian Berto, Filippo TP Chemical technology In this study, nanostructured titania (TiO2; n-TO) and nanostructured alumina-titania (Al2O3-13 wt.%TiO2; n-ATO) coatings were successfully deposited on the 6061 aluminum alloy by applying the high-velocity oxy-fuel process. The n-TO coating showed limited pores or microcracks accompanied by both partially and fully melted areas within splats. The n-TO coating exhibited about 25% higher microhardness compared with the n-ATO coating. The agglomerated non-molten nanostructured TiO2 particles that are randomly dispersed and embedded within the n-TO coating microstructure act as arresters of cracks through either branching or blunting crack tips, resulting in about 17% higher bonding strength, as compared to the n-ATO coating with a looser microstructure. The n-TO coating demonstrated superior hardness, higher wear resistance, and smoother wear scar than the n-ATO and uncoated Al substrate. The electrochemical test indicated that the n-ATO coating had about a 50% higher corrosion rate than the n-TO coating because of its looser structure. The immersion test revealed that the n-ATO coating had been severely attacked by blistering and deep cracks corrosions, whereas limited attacks could be distinguished using the n-TO coating in the substrate interface. Based on the results, the n-TO coating can effectively protect the Al alloy substrate against 3.5 wt.% NaCl solution. Springer 2021 Article PeerReviewed Bakhsheshi Rad, Hamid Reza and Daroonparvar, Mohammadreza and Mat Yajid, Muhamad Azizi and Kumar, Pankaj and Razzaghi, Mahmood and Ismail, Ahmad Fauzi and Sharif, Safian and Berto, Filippo (2021) Characterization and corrosion behavior evaluation of nanostructured TiO2 and Al2O3-13 wt.%TiO2 coatings on aluminum alloy prepared via high-velocity oxy-fuel spray. Journal of Materials Engineering and Performance, 30 (2). pp. 1356-1370. ISSN 1059-9495 http://dx.doi.org/10.1007/s11665-020-05333-4
institution	Universiti Teknologi Malaysia
building	UTM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Teknologi Malaysia
content_source	UTM Institutional Repository
url_provider	http://eprints.utm.my/
topic	TP Chemical technology
spellingShingle	TP Chemical technology Bakhsheshi Rad, Hamid Reza Daroonparvar, Mohammadreza Mat Yajid, Muhamad Azizi Kumar, Pankaj Razzaghi, Mahmood Ismail, Ahmad Fauzi Sharif, Safian Berto, Filippo Characterization and corrosion behavior evaluation of nanostructured TiO2 and Al2O3-13 wt.%TiO2 coatings on aluminum alloy prepared via high-velocity oxy-fuel spray
description	In this study, nanostructured titania (TiO2; n-TO) and nanostructured alumina-titania (Al2O3-13 wt.%TiO2; n-ATO) coatings were successfully deposited on the 6061 aluminum alloy by applying the high-velocity oxy-fuel process. The n-TO coating showed limited pores or microcracks accompanied by both partially and fully melted areas within splats. The n-TO coating exhibited about 25% higher microhardness compared with the n-ATO coating. The agglomerated non-molten nanostructured TiO2 particles that are randomly dispersed and embedded within the n-TO coating microstructure act as arresters of cracks through either branching or blunting crack tips, resulting in about 17% higher bonding strength, as compared to the n-ATO coating with a looser microstructure. The n-TO coating demonstrated superior hardness, higher wear resistance, and smoother wear scar than the n-ATO and uncoated Al substrate. The electrochemical test indicated that the n-ATO coating had about a 50% higher corrosion rate than the n-TO coating because of its looser structure. The immersion test revealed that the n-ATO coating had been severely attacked by blistering and deep cracks corrosions, whereas limited attacks could be distinguished using the n-TO coating in the substrate interface. Based on the results, the n-TO coating can effectively protect the Al alloy substrate against 3.5 wt.% NaCl solution.
format	Article
author	Bakhsheshi Rad, Hamid Reza Daroonparvar, Mohammadreza Mat Yajid, Muhamad Azizi Kumar, Pankaj Razzaghi, Mahmood Ismail, Ahmad Fauzi Sharif, Safian Berto, Filippo
author_facet	Bakhsheshi Rad, Hamid Reza Daroonparvar, Mohammadreza Mat Yajid, Muhamad Azizi Kumar, Pankaj Razzaghi, Mahmood Ismail, Ahmad Fauzi Sharif, Safian Berto, Filippo
author_sort	Bakhsheshi Rad, Hamid Reza
title	Characterization and corrosion behavior evaluation of nanostructured TiO2 and Al2O3-13 wt.%TiO2 coatings on aluminum alloy prepared via high-velocity oxy-fuel spray
title_short	Characterization and corrosion behavior evaluation of nanostructured TiO2 and Al2O3-13 wt.%TiO2 coatings on aluminum alloy prepared via high-velocity oxy-fuel spray
title_full	Characterization and corrosion behavior evaluation of nanostructured TiO2 and Al2O3-13 wt.%TiO2 coatings on aluminum alloy prepared via high-velocity oxy-fuel spray
title_fullStr	Characterization and corrosion behavior evaluation of nanostructured TiO2 and Al2O3-13 wt.%TiO2 coatings on aluminum alloy prepared via high-velocity oxy-fuel spray
title_full_unstemmed	Characterization and corrosion behavior evaluation of nanostructured TiO2 and Al2O3-13 wt.%TiO2 coatings on aluminum alloy prepared via high-velocity oxy-fuel spray
title_sort	characterization and corrosion behavior evaluation of nanostructured tio2 and al2o3-13 wt.%tio2 coatings on aluminum alloy prepared via high-velocity oxy-fuel spray
publisher	Springer
publishDate	2021
url	http://eprints.utm.my/id/eprint/95537/ http://dx.doi.org/10.1007/s11665-020-05333-4
_version_	1735386816401375232
score	13.211869

Characterization and corrosion behavior evaluation of nanostructured TiO2 and Al2O3-13 wt.%TiO2 coatings on aluminum alloy prepared via high-velocity oxy-fuel spray

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