Corrosion Mechanism of Press-Hardened Steel with Aluminum-Silicon Coating in Controlled Atmospheric Conditions
The effect of various atmospheric parameters on the corrosion mechanism of press-hardened steel (PHS) coated with Al-Si (AS) was studied. Quantitative models of the composition of soluble and stable corrosion products were developed. A high chloride concentration led to a localized corrosion due to...
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MDPI AG
2025-01-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/15/1/97 |
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| author | Nikola Macháčková Darja Rudomilova Tomáš Prošek Thierry Sturel Maxime Brossard |
| author_facet | Nikola Macháčková Darja Rudomilova Tomáš Prošek Thierry Sturel Maxime Brossard |
| author_sort | Nikola Macháčková |
| collection | DOAJ |
| description | The effect of various atmospheric parameters on the corrosion mechanism of press-hardened steel (PHS) coated with Al-Si (AS) was studied. Quantitative models of the composition of soluble and stable corrosion products were developed. A high chloride concentration led to a localized corrosion due to the presence of cracks in the coating. Increased corrosion resistance of silicon-rich Al<sub>8</sub>Fe<sub>2</sub>Si and AlFe at the expense of the Al<sub>5</sub>Fe<sub>2</sub> phase with low silicon content was shown. Under low-chloride-deposition conditions, the coating exhibited good corrosion resistance and provided sufficient protection to the underlying steel. The formation of more local anodes and cathodes under conditions of lower relative humidity led to a reduction in the depth of corrosion pits in the steel substrate. Constant high relative humidity and sulphate deposits on the surface were critical for the acceleration of steel corrosion in coating cracks. |
| format | Article |
| id | doaj-art-212fc14496884970911f17c1ed4cfd1b |
| institution | Kabale University |
| issn | 2075-4701 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj-art-212fc14496884970911f17c1ed4cfd1b2025-01-24T13:41:41ZengMDPI AGMetals2075-47012025-01-011519710.3390/met15010097Corrosion Mechanism of Press-Hardened Steel with Aluminum-Silicon Coating in Controlled Atmospheric ConditionsNikola Macháčková0Darja Rudomilova1Tomáš Prošek2Thierry Sturel3Maxime Brossard4Department of Metallic Construction Materials, Technopark Kralupy, University of Chemistry and Technology Prague, Nám. G. Karse 7/2, 278 01 Kralupy nad Vltavou, Czech RepublicDepartment of Metallic Construction Materials, Technopark Kralupy, University of Chemistry and Technology Prague, Nám. G. Karse 7/2, 278 01 Kralupy nad Vltavou, Czech RepublicDepartment of Metallic Construction Materials, Technopark Kralupy, University of Chemistry and Technology Prague, Nám. G. Karse 7/2, 278 01 Kralupy nad Vltavou, Czech RepublicArcelorMittal Research SA, 57283 Maizières-lès-Metz, FranceArcelorMittal Research SA, 57283 Maizières-lès-Metz, FranceThe effect of various atmospheric parameters on the corrosion mechanism of press-hardened steel (PHS) coated with Al-Si (AS) was studied. Quantitative models of the composition of soluble and stable corrosion products were developed. A high chloride concentration led to a localized corrosion due to the presence of cracks in the coating. Increased corrosion resistance of silicon-rich Al<sub>8</sub>Fe<sub>2</sub>Si and AlFe at the expense of the Al<sub>5</sub>Fe<sub>2</sub> phase with low silicon content was shown. Under low-chloride-deposition conditions, the coating exhibited good corrosion resistance and provided sufficient protection to the underlying steel. The formation of more local anodes and cathodes under conditions of lower relative humidity led to a reduction in the depth of corrosion pits in the steel substrate. Constant high relative humidity and sulphate deposits on the surface were critical for the acceleration of steel corrosion in coating cracks.https://www.mdpi.com/2075-4701/15/1/97press-hardened steelmetal coatingsaluminumICP-OESIR spectroscopyatmospheric corrosion |
| spellingShingle | Nikola Macháčková Darja Rudomilova Tomáš Prošek Thierry Sturel Maxime Brossard Corrosion Mechanism of Press-Hardened Steel with Aluminum-Silicon Coating in Controlled Atmospheric Conditions Metals press-hardened steel metal coatings aluminum ICP-OES IR spectroscopy atmospheric corrosion |
| title | Corrosion Mechanism of Press-Hardened Steel with Aluminum-Silicon Coating in Controlled Atmospheric Conditions |
| title_full | Corrosion Mechanism of Press-Hardened Steel with Aluminum-Silicon Coating in Controlled Atmospheric Conditions |
| title_fullStr | Corrosion Mechanism of Press-Hardened Steel with Aluminum-Silicon Coating in Controlled Atmospheric Conditions |
| title_full_unstemmed | Corrosion Mechanism of Press-Hardened Steel with Aluminum-Silicon Coating in Controlled Atmospheric Conditions |
| title_short | Corrosion Mechanism of Press-Hardened Steel with Aluminum-Silicon Coating in Controlled Atmospheric Conditions |
| title_sort | corrosion mechanism of press hardened steel with aluminum silicon coating in controlled atmospheric conditions |
| topic | press-hardened steel metal coatings aluminum ICP-OES IR spectroscopy atmospheric corrosion |
| url | https://www.mdpi.com/2075-4701/15/1/97 |
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