Effect of Al2O3 nanoparticles on corrosion behavior of aluimnum alloy (Al-4.5 wt% Cu-1.5 wt% Mg) fabricated by powder metallurgy
In this research the effect of Al2O3 nanoparticles on corrosion behavior of aluminum base alloy (Al-4.5 wt% Cu-1.5 wt% Mg) has been investigated. Nanocomopsites reinforced with variable contents of 1, 3 and 5 wt% of Al2O3 nanoparticles were fabricated using powder metallurgy. All samples were prepar...
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| Format: | Article |
| Language: | English |
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Vilnius Gediminas Technical University
2019-03-01
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| Series: | Engineering Structures and Technologies |
| Subjects: | |
| Online Access: | http://journals.vgtu.lt/index.php/EST/article/view/8860 |
| _version_ | 1818874875769520128 |
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| author | Muna Khethier Abbass Bassma Finner Sultan |
| author_facet | Muna Khethier Abbass Bassma Finner Sultan |
| author_sort | Muna Khethier Abbass |
| collection | DOAJ |
| description | In this research the effect of Al2O3 nanoparticles on corrosion behavior of aluminum base alloy (Al-4.5 wt% Cu-1.5 wt% Mg) has been investigated. Nanocomopsites reinforced with variable contents of 1, 3 and 5 wt% of Al2O3 nanoparticles were fabricated using powder metallurgy. All samples were prepared from the base alloy powders under the best powder metallurgy processing conditions of 6 hr of mixing time, 450 MPa of compaction pressure and 560 °C of sintering temperature. Density and micro hardness measurements, and electrochemical corrosion tests are performed for all prepared samples in 3.5 wt% NaCl solution at room temperature using potentiostate instrument. It has been found that density and micro hardness of the nanocomposite increase with increasing of wt% Al2O3 nanoparticles to Al matrix. It was found from Tafel extrapolation method that corrosion rates of the nanocomposites reinforced with alumina nanoparticles were lower than that of base alloy. From results of corrosion test by potentiodynamic cyclic polarization method, it was found the pitting corrosion resistance improves with adding of Al2O3 nanoparticles. It was noticed that the pits disappear and the hysteresis loop disappears also from anodic polarization curve. |
| first_indexed | 2024-12-19T13:17:33Z |
| format | Article |
| id | doaj.art-2a847713f41b484baa49486979f31d5a |
| institution | Directory Open Access Journal |
| issn | 2029-882X 2029-8838 |
| language | English |
| last_indexed | 2024-12-19T13:17:33Z |
| publishDate | 2019-03-01 |
| publisher | Vilnius Gediminas Technical University |
| record_format | Article |
| series | Engineering Structures and Technologies |
| spelling | doaj.art-2a847713f41b484baa49486979f31d5a2022-12-21T20:19:47ZengVilnius Gediminas Technical UniversityEngineering Structures and Technologies2029-882X2029-88382019-03-0111110.3846/est.2019.8860Effect of Al2O3 nanoparticles on corrosion behavior of aluimnum alloy (Al-4.5 wt% Cu-1.5 wt% Mg) fabricated by powder metallurgyMuna Khethier Abbass0Bassma Finner Sultan1Department of Production Engineering and Metallurgy, University of Technology, Baghdad, IraqDepartment of Production Engineering and Metallurgy, University of Technology, Baghdad, IraqIn this research the effect of Al2O3 nanoparticles on corrosion behavior of aluminum base alloy (Al-4.5 wt% Cu-1.5 wt% Mg) has been investigated. Nanocomopsites reinforced with variable contents of 1, 3 and 5 wt% of Al2O3 nanoparticles were fabricated using powder metallurgy. All samples were prepared from the base alloy powders under the best powder metallurgy processing conditions of 6 hr of mixing time, 450 MPa of compaction pressure and 560 °C of sintering temperature. Density and micro hardness measurements, and electrochemical corrosion tests are performed for all prepared samples in 3.5 wt% NaCl solution at room temperature using potentiostate instrument. It has been found that density and micro hardness of the nanocomposite increase with increasing of wt% Al2O3 nanoparticles to Al matrix. It was found from Tafel extrapolation method that corrosion rates of the nanocomposites reinforced with alumina nanoparticles were lower than that of base alloy. From results of corrosion test by potentiodynamic cyclic polarization method, it was found the pitting corrosion resistance improves with adding of Al2O3 nanoparticles. It was noticed that the pits disappear and the hysteresis loop disappears also from anodic polarization curve.http://journals.vgtu.lt/index.php/EST/article/view/8860powder metallurgynano compositesAl-Cu-Mg alloyelectrochemical corrosion |
| spellingShingle | Muna Khethier Abbass Bassma Finner Sultan Effect of Al2O3 nanoparticles on corrosion behavior of aluimnum alloy (Al-4.5 wt% Cu-1.5 wt% Mg) fabricated by powder metallurgy Engineering Structures and Technologies powder metallurgy nano composites Al-Cu-Mg alloy electrochemical corrosion |
| title | Effect of Al2O3 nanoparticles on corrosion behavior of aluimnum alloy (Al-4.5 wt% Cu-1.5 wt% Mg) fabricated by powder metallurgy |
| title_full | Effect of Al2O3 nanoparticles on corrosion behavior of aluimnum alloy (Al-4.5 wt% Cu-1.5 wt% Mg) fabricated by powder metallurgy |
| title_fullStr | Effect of Al2O3 nanoparticles on corrosion behavior of aluimnum alloy (Al-4.5 wt% Cu-1.5 wt% Mg) fabricated by powder metallurgy |
| title_full_unstemmed | Effect of Al2O3 nanoparticles on corrosion behavior of aluimnum alloy (Al-4.5 wt% Cu-1.5 wt% Mg) fabricated by powder metallurgy |
| title_short | Effect of Al2O3 nanoparticles on corrosion behavior of aluimnum alloy (Al-4.5 wt% Cu-1.5 wt% Mg) fabricated by powder metallurgy |
| title_sort | effect of al2o3 nanoparticles on corrosion behavior of aluimnum alloy al 4 5 wt cu 1 5 wt mg fabricated by powder metallurgy |
| topic | powder metallurgy nano composites Al-Cu-Mg alloy electrochemical corrosion |
| url | http://journals.vgtu.lt/index.php/EST/article/view/8860 |
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