Iron Intermetallic Compounds (IMCs) Formation Mechanism in the Molten Aluminium Zinc (Al-Zn) Coating Alloy
To prevent corrosion of steel products, the steel industry often relies on Al-Zn based alloy coatings, applied through hot-dip coating technology. Despite this, a long-standing problem in the galvanizing industry involves the formation of Fe-based intermetallic compounds (IMCs) in the Al-Zn coating...
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| Format: | Article |
| Language: | English |
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Faculty of Mechanical Engineering in Slavonski Brod, Faculty of Electrical Engineering in Osijek, Faculty of Civil Engineering in Osijek
2024-01-01
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| Series: | Tehnički Vjesnik |
| Subjects: | |
| Online Access: | https://hrcak.srce.hr/file/454989 |
| _version_ | 1797206164706951168 |
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| author | Abdul Khaliq Vishnu Kasva Abdulaziz S. Alghamdi Mohamed Ramadan Tayyab Subhani Waseem Haider K. S. Abdel Halim |
| author_facet | Abdul Khaliq Vishnu Kasva Abdulaziz S. Alghamdi Mohamed Ramadan Tayyab Subhani Waseem Haider K. S. Abdel Halim |
| author_sort | Abdul Khaliq |
| collection | DOAJ |
| description | To prevent corrosion of steel products, the steel industry often relies on Al-Zn based alloy coatings, applied through hot-dip coating technology. Despite this, a long-standing problem in the galvanizing industry involves the formation of Fe-based intermetallic compounds (IMCs) in the Al-Zn coating bath, caused by iron dissolution from steel products. Such IMCs are the primary source of dross formation in the Al-Zn bath, which inevitably leads to metal spot defects in the coated steel products and bottom dross build-up in the Al-Zn bath. The present research aims to investigate the mechanism of Fe transformation into IMCs. To achieve this, Fe saturated and unsaturated Al-Zn alloys were doped with low carbon steel at a temperature of 600 °C. The samples were collected at regular intervals and quenched in water. The optical microscopy (OM) and scanning electron microscopy (SEM) with energy dispersive x-ray spectroscopy (EDS) were used to study the transformation of steel strips into Fe-IMCs particles in molten Al-Zn alloys. The study findings suggest that the Fe transformation into Fe-IMCs is a complex process, where the steel strip surface is initially oxidized, and Al5Fe2 and Al3Fe are formed, which finally transform into Al8Fe2Si(Zn) (τ5c) IMCs particles. These results can assist galvanizers in understanding formation of Fe-IMCs and bottom dross build up in the costing pots. |
| first_indexed | 2024-04-24T09:02:40Z |
| format | Article |
| id | doaj.art-2fd97d8057f247d6950a6a678b780de5 |
| institution | Directory Open Access Journal |
| issn | 1330-3651 1848-6339 |
| language | English |
| last_indexed | 2024-04-24T09:02:40Z |
| publishDate | 2024-01-01 |
| publisher | Faculty of Mechanical Engineering in Slavonski Brod, Faculty of Electrical Engineering in Osijek, Faculty of Civil Engineering in Osijek |
| record_format | Article |
| series | Tehnički Vjesnik |
| spelling | doaj.art-2fd97d8057f247d6950a6a678b780de52024-04-15T19:25:05ZengFaculty of Mechanical Engineering in Slavonski Brod, Faculty of Electrical Engineering in Osijek, Faculty of Civil Engineering in OsijekTehnički Vjesnik1330-36511848-63392024-01-0131246046510.17559/TV-20230523000660Iron Intermetallic Compounds (IMCs) Formation Mechanism in the Molten Aluminium Zinc (Al-Zn) Coating AlloyAbdul Khaliq0Vishnu Kasva1Abdulaziz S. Alghamdi2Mohamed Ramadan3Tayyab Subhani4Waseem Haider5K. S. Abdel Halim6University of Ha’il College of Engineering, University of Ha’il, Ha’il P.O. Box 2440, Saudi ArabiaRMIT University, College of Engineering, RMIT University, Melbourne, AustraliaUniversity of Ha’il College of Engineering, University of Ha’il, Ha’il P.O. Box 2440, Saudi ArabiaUniversity of Ha’il College of Engineering, University of Ha’il, Ha’il P.O. Box 2440, Saudi ArabiaUniversity of Ha’il College of Engineering, University of Ha’il, Ha’il P.O. Box 2440, Saudi ArabiaCentral Michigan University, School of Engineering and Technology, Central Michigan University, Mount Pleasant, MI 48859, USAUniversity of Ha’il College of Engineering, University of Ha’il, Ha’il P.O. Box 2440, Saudi ArabiaTo prevent corrosion of steel products, the steel industry often relies on Al-Zn based alloy coatings, applied through hot-dip coating technology. Despite this, a long-standing problem in the galvanizing industry involves the formation of Fe-based intermetallic compounds (IMCs) in the Al-Zn coating bath, caused by iron dissolution from steel products. Such IMCs are the primary source of dross formation in the Al-Zn bath, which inevitably leads to metal spot defects in the coated steel products and bottom dross build-up in the Al-Zn bath. The present research aims to investigate the mechanism of Fe transformation into IMCs. To achieve this, Fe saturated and unsaturated Al-Zn alloys were doped with low carbon steel at a temperature of 600 °C. The samples were collected at regular intervals and quenched in water. The optical microscopy (OM) and scanning electron microscopy (SEM) with energy dispersive x-ray spectroscopy (EDS) were used to study the transformation of steel strips into Fe-IMCs particles in molten Al-Zn alloys. The study findings suggest that the Fe transformation into Fe-IMCs is a complex process, where the steel strip surface is initially oxidized, and Al5Fe2 and Al3Fe are formed, which finally transform into Al8Fe2Si(Zn) (τ5c) IMCs particles. These results can assist galvanizers in understanding formation of Fe-IMCs and bottom dross build up in the costing pots.https://hrcak.srce.hr/file/454989Al-Zn alloycoatingdross formationgalvanizingIMCs |
| spellingShingle | Abdul Khaliq Vishnu Kasva Abdulaziz S. Alghamdi Mohamed Ramadan Tayyab Subhani Waseem Haider K. S. Abdel Halim Iron Intermetallic Compounds (IMCs) Formation Mechanism in the Molten Aluminium Zinc (Al-Zn) Coating Alloy Tehnički Vjesnik Al-Zn alloy coating dross formation galvanizing IMCs |
| title | Iron Intermetallic Compounds (IMCs) Formation Mechanism in the Molten Aluminium Zinc (Al-Zn) Coating Alloy |
| title_full | Iron Intermetallic Compounds (IMCs) Formation Mechanism in the Molten Aluminium Zinc (Al-Zn) Coating Alloy |
| title_fullStr | Iron Intermetallic Compounds (IMCs) Formation Mechanism in the Molten Aluminium Zinc (Al-Zn) Coating Alloy |
| title_full_unstemmed | Iron Intermetallic Compounds (IMCs) Formation Mechanism in the Molten Aluminium Zinc (Al-Zn) Coating Alloy |
| title_short | Iron Intermetallic Compounds (IMCs) Formation Mechanism in the Molten Aluminium Zinc (Al-Zn) Coating Alloy |
| title_sort | iron intermetallic compounds imcs formation mechanism in the molten aluminium zinc al zn coating alloy |
| topic | Al-Zn alloy coating dross formation galvanizing IMCs |
| url | https://hrcak.srce.hr/file/454989 |
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