Coloring hot-dip galvanization of steel samples in industrial zinc-manganese baths
Colored hot dip galvanization of various steel samples was realized in an industrial bath containing 738 kg of a Zn-Mn liquid alloy at 450°C. Zinc was alloyed in three steps to reach 0.1, 0.15 and 0.2 w% of Mn in liquid zinc, and galvanization of 9 different steel samples was performed in a...
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| Format: | Article |
| Language: | English |
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University of Belgrade, Technical Faculty, Bor
2017-01-01
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| Series: | Journal of Mining and Metallurgy. Section B: Metallurgy |
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| Online Access: | http://www.doiserbia.nb.rs/img/doi/1450-5339/2017/1450-53391700028G.pdf |
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| author | Godzsák M. Lévai G. Vad K. Csik A. Hakl J. Kulcsár T. Kaptay G. |
| author_facet | Godzsák M. Lévai G. Vad K. Csik A. Hakl J. Kulcsár T. Kaptay G. |
| author_sort | Godzsák M. |
| collection | DOAJ |
| description | Colored hot dip galvanization of various steel samples was realized in an
industrial bath containing 738 kg of a Zn-Mn liquid alloy at 450°C. Zinc was
alloyed in three steps to reach 0.1, 0.15 and 0.2 w% of Mn in liquid zinc,
and galvanization of 9 different steel samples was performed in all three
baths. The obtained colors change in the sequence blue - yellow - pink -
green with increasing the Mn-content of the bath and with increasing the wall
thickness of the steel samples. The results are analyzed by Glow-discharge
optical emission spectroscopy (GD-OES) and Secondary Neutral Mass
Spectrometry (SNMS) techniques. It is shown that depending on the Mn-content
and on the wall thickness of the steel the samples are coated by MnO of
various thicknesses (in the range between 30 - 230 nm). This layer forms when
the samples are removed from the Zn-Mn bath into surrounding air, before the
Zn-layer is solidified. Light interference on this thin MnO layer causes the
colors of the galvanized coating. Different colors are obtained in different
ranges of MnO thicknesses, in accordance with the laws of optics. The minimum
Mn-content of liquid Zn is found as 0.025 ± 0.010 m/m% to ensure that the
original outer ZnO layer on Zn is converted into the MnO layer. This minimum
critical Mn-content is in agreement with chemical thermodynamics. |
| format | Article |
| id | doaj-art-c7622eb3d3864e4cbecef2e065cf571e |
| institution | Kabale University |
| issn | 1450-5339 2217-7175 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | University of Belgrade, Technical Faculty, Bor |
| record_format | Article |
| series | Journal of Mining and Metallurgy. Section B: Metallurgy |
| spelling | doaj-art-c7622eb3d3864e4cbecef2e065cf571e2025-02-02T07:40:53ZengUniversity of Belgrade, Technical Faculty, BorJournal of Mining and Metallurgy. Section B: Metallurgy1450-53392217-71752017-01-0153331932610.2298/JMMB170531028G1450-53391700028GColoring hot-dip galvanization of steel samples in industrial zinc-manganese bathsGodzsák M.0Lévai G.1Vad K.2Csik A.3Hakl J.4Kulcsár T.5Kaptay G.6University of Miskolc, Egyetemvaros, Miskolc, HungaryInstitute for Nuclear Research (MTA ATOMKI), Debrecen, HungaryInstitute for Nuclear Research (MTA ATOMKI), Debrecen, HungaryInstitute for Nuclear Research (MTA ATOMKI), Debrecen, HungaryInstitute for Nuclear Research (MTA ATOMKI), Debrecen, HungaryUniversity of Miskolc, Egyetemvaros, Miskolc, HungaryUniversity of Miskolc, Egyetemvaros, Miskolc, Hungary + Bay Zoltan Ltd, BAY-LOGI, Miskolc, Hungary + MTA-ME Research group on Materials Science, Miskolc, HungaryColored hot dip galvanization of various steel samples was realized in an industrial bath containing 738 kg of a Zn-Mn liquid alloy at 450°C. Zinc was alloyed in three steps to reach 0.1, 0.15 and 0.2 w% of Mn in liquid zinc, and galvanization of 9 different steel samples was performed in all three baths. The obtained colors change in the sequence blue - yellow - pink - green with increasing the Mn-content of the bath and with increasing the wall thickness of the steel samples. The results are analyzed by Glow-discharge optical emission spectroscopy (GD-OES) and Secondary Neutral Mass Spectrometry (SNMS) techniques. It is shown that depending on the Mn-content and on the wall thickness of the steel the samples are coated by MnO of various thicknesses (in the range between 30 - 230 nm). This layer forms when the samples are removed from the Zn-Mn bath into surrounding air, before the Zn-layer is solidified. Light interference on this thin MnO layer causes the colors of the galvanized coating. Different colors are obtained in different ranges of MnO thicknesses, in accordance with the laws of optics. The minimum Mn-content of liquid Zn is found as 0.025 ± 0.010 m/m% to ensure that the original outer ZnO layer on Zn is converted into the MnO layer. This minimum critical Mn-content is in agreement with chemical thermodynamics.http://www.doiserbia.nb.rs/img/doi/1450-5339/2017/1450-53391700028G.pdfhot-dip galvanizationZn-Mn bathlight interferenceMnO layercolored coating |
| spellingShingle | Godzsák M. Lévai G. Vad K. Csik A. Hakl J. Kulcsár T. Kaptay G. Coloring hot-dip galvanization of steel samples in industrial zinc-manganese baths Journal of Mining and Metallurgy. Section B: Metallurgy hot-dip galvanization Zn-Mn bath light interference MnO layer colored coating |
| title | Coloring hot-dip galvanization of steel samples in industrial zinc-manganese baths |
| title_full | Coloring hot-dip galvanization of steel samples in industrial zinc-manganese baths |
| title_fullStr | Coloring hot-dip galvanization of steel samples in industrial zinc-manganese baths |
| title_full_unstemmed | Coloring hot-dip galvanization of steel samples in industrial zinc-manganese baths |
| title_short | Coloring hot-dip galvanization of steel samples in industrial zinc-manganese baths |
| title_sort | coloring hot dip galvanization of steel samples in industrial zinc manganese baths |
| topic | hot-dip galvanization Zn-Mn bath light interference MnO layer colored coating |
| url | http://www.doiserbia.nb.rs/img/doi/1450-5339/2017/1450-53391700028G.pdf |
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