Effects of manganese addition on microstructures and corrosion behavior of hot-dip zinc coatings of hot-rolled steels
In the present work, the Zn coatings of hot-rolled steel sheets with different Mn additions were prepared by hot dipping process. The effects of Mn addition on the microstructures and corrosion resistances of the hot-dip Zn coatings were investigated by scanning electron microscopy (SEM), X-ray phot...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Wang, Youbin [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2014transfer abstract |
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| Umfang: |
11 |
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| Übergeordnetes Werk: |
Enthalten in: A high efficiency solar steam generation system with using residual heat to enhance steam escape - Bai, Binglin ELSEVIER, 2020, Amsterdam [u.a.] |
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| Übergeordnetes Werk: |
volume:245 ; year:2014 ; day:25 ; month:04 ; pages:55-65 ; extent:11 |
| Links: |
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| DOI / URN: |
10.1016/j.surfcoat.2014.02.040 |
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ELV022608419 |
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| 245 | 1 | 0 | |a Effects of manganese addition on microstructures and corrosion behavior of hot-dip zinc coatings of hot-rolled steels |
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| 520 | |a In the present work, the Zn coatings of hot-rolled steel sheets with different Mn additions were prepared by hot dipping process. The effects of Mn addition on the microstructures and corrosion resistances of the hot-dip Zn coatings were investigated by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and X-ray diffractometry (XRD). The Mn distribution in δ-layer is lower than that of ζ-layer. Mn addition could promote the growth of δ-layer of the coating and inhibit the growth of the columnar ζ phase which morphology was changed to discontinuous phase. It is also found that the surface color of Zn–Mn coating varies with the dipping temperatures. Such phenomenon is supposed to be attributed to the optical interference effect of the Mn oxide film formed on the coating surface. For the corrosion behavior, the as-dipped and ζ layer-exposed Zn coatings were subjected to both Tafel polarization measurements and electrochemical impedance spectroscopy (EIS) tests in 3.5% NaCl solution. The results indicate that Mn addition enhances the corrosion resistance of the as-dipped coatings. The dense corrosion products formed on the top η layer of the Zn–Mn coatings after Tafel polarization corrosion are assumed to inhibit the further corrosion of the coating. However, minor effects of Mn addition to the anti-corrosion performance of ζ layer were noticed. | ||
| 520 | |a In the present work, the Zn coatings of hot-rolled steel sheets with different Mn additions were prepared by hot dipping process. The effects of Mn addition on the microstructures and corrosion resistances of the hot-dip Zn coatings were investigated by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and X-ray diffractometry (XRD). The Mn distribution in δ-layer is lower than that of ζ-layer. Mn addition could promote the growth of δ-layer of the coating and inhibit the growth of the columnar ζ phase which morphology was changed to discontinuous phase. It is also found that the surface color of Zn–Mn coating varies with the dipping temperatures. Such phenomenon is supposed to be attributed to the optical interference effect of the Mn oxide film formed on the coating surface. For the corrosion behavior, the as-dipped and ζ layer-exposed Zn coatings were subjected to both Tafel polarization measurements and electrochemical impedance spectroscopy (EIS) tests in 3.5% NaCl solution. The results indicate that Mn addition enhances the corrosion resistance of the as-dipped coatings. The dense corrosion products formed on the top η layer of the Zn–Mn coatings after Tafel polarization corrosion are assumed to inhibit the further corrosion of the coating. However, minor effects of Mn addition to the anti-corrosion performance of ζ layer were noticed. | ||
| 700 | 1 | |a Zeng, Jianmin |4 oth | |
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10.1016/j.surfcoat.2014.02.040 doi GBVA2014008000023.pica (DE-627)ELV022608419 (ELSEVIER)S0257-8972(14)00159-5 DE-627 ger DE-627 rakwb eng 620 670 620 DE-600 670 DE-600 570 690 VZ 58.51 bkl Wang, Youbin verfasserin aut Effects of manganese addition on microstructures and corrosion behavior of hot-dip zinc coatings of hot-rolled steels 2014transfer abstract 11 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier In the present work, the Zn coatings of hot-rolled steel sheets with different Mn additions were prepared by hot dipping process. The effects of Mn addition on the microstructures and corrosion resistances of the hot-dip Zn coatings were investigated by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and X-ray diffractometry (XRD). The Mn distribution in δ-layer is lower than that of ζ-layer. Mn addition could promote the growth of δ-layer of the coating and inhibit the growth of the columnar ζ phase which morphology was changed to discontinuous phase. It is also found that the surface color of Zn–Mn coating varies with the dipping temperatures. Such phenomenon is supposed to be attributed to the optical interference effect of the Mn oxide film formed on the coating surface. For the corrosion behavior, the as-dipped and ζ layer-exposed Zn coatings were subjected to both Tafel polarization measurements and electrochemical impedance spectroscopy (EIS) tests in 3.5% NaCl solution. The results indicate that Mn addition enhances the corrosion resistance of the as-dipped coatings. The dense corrosion products formed on the top η layer of the Zn–Mn coatings after Tafel polarization corrosion are assumed to inhibit the further corrosion of the coating. However, minor effects of Mn addition to the anti-corrosion performance of ζ layer were noticed. In the present work, the Zn coatings of hot-rolled steel sheets with different Mn additions were prepared by hot dipping process. The effects of Mn addition on the microstructures and corrosion resistances of the hot-dip Zn coatings were investigated by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and X-ray diffractometry (XRD). The Mn distribution in δ-layer is lower than that of ζ-layer. Mn addition could promote the growth of δ-layer of the coating and inhibit the growth of the columnar ζ phase which morphology was changed to discontinuous phase. It is also found that the surface color of Zn–Mn coating varies with the dipping temperatures. Such phenomenon is supposed to be attributed to the optical interference effect of the Mn oxide film formed on the coating surface. For the corrosion behavior, the as-dipped and ζ layer-exposed Zn coatings were subjected to both Tafel polarization measurements and electrochemical impedance spectroscopy (EIS) tests in 3.5% NaCl solution. The results indicate that Mn addition enhances the corrosion resistance of the as-dipped coatings. The dense corrosion products formed on the top η layer of the Zn–Mn coatings after Tafel polarization corrosion are assumed to inhibit the further corrosion of the coating. However, minor effects of Mn addition to the anti-corrosion performance of ζ layer were noticed. Zeng, Jianmin oth Enthalten in Elsevier Science Bai, Binglin ELSEVIER A high efficiency solar steam generation system with using residual heat to enhance steam escape 2020 Amsterdam [u.a.] (DE-627)ELV004415906 volume:245 year:2014 day:25 month:04 pages:55-65 extent:11 https://doi.org/10.1016/j.surfcoat.2014.02.040 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 58.51 Abwassertechnik Wasseraufbereitung VZ AR 245 2014 25 0425 55-65 11 045F 620 |
| spelling |
10.1016/j.surfcoat.2014.02.040 doi GBVA2014008000023.pica (DE-627)ELV022608419 (ELSEVIER)S0257-8972(14)00159-5 DE-627 ger DE-627 rakwb eng 620 670 620 DE-600 670 DE-600 570 690 VZ 58.51 bkl Wang, Youbin verfasserin aut Effects of manganese addition on microstructures and corrosion behavior of hot-dip zinc coatings of hot-rolled steels 2014transfer abstract 11 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier In the present work, the Zn coatings of hot-rolled steel sheets with different Mn additions were prepared by hot dipping process. The effects of Mn addition on the microstructures and corrosion resistances of the hot-dip Zn coatings were investigated by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and X-ray diffractometry (XRD). The Mn distribution in δ-layer is lower than that of ζ-layer. Mn addition could promote the growth of δ-layer of the coating and inhibit the growth of the columnar ζ phase which morphology was changed to discontinuous phase. It is also found that the surface color of Zn–Mn coating varies with the dipping temperatures. Such phenomenon is supposed to be attributed to the optical interference effect of the Mn oxide film formed on the coating surface. For the corrosion behavior, the as-dipped and ζ layer-exposed Zn coatings were subjected to both Tafel polarization measurements and electrochemical impedance spectroscopy (EIS) tests in 3.5% NaCl solution. The results indicate that Mn addition enhances the corrosion resistance of the as-dipped coatings. The dense corrosion products formed on the top η layer of the Zn–Mn coatings after Tafel polarization corrosion are assumed to inhibit the further corrosion of the coating. However, minor effects of Mn addition to the anti-corrosion performance of ζ layer were noticed. In the present work, the Zn coatings of hot-rolled steel sheets with different Mn additions were prepared by hot dipping process. The effects of Mn addition on the microstructures and corrosion resistances of the hot-dip Zn coatings were investigated by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and X-ray diffractometry (XRD). The Mn distribution in δ-layer is lower than that of ζ-layer. Mn addition could promote the growth of δ-layer of the coating and inhibit the growth of the columnar ζ phase which morphology was changed to discontinuous phase. It is also found that the surface color of Zn–Mn coating varies with the dipping temperatures. Such phenomenon is supposed to be attributed to the optical interference effect of the Mn oxide film formed on the coating surface. For the corrosion behavior, the as-dipped and ζ layer-exposed Zn coatings were subjected to both Tafel polarization measurements and electrochemical impedance spectroscopy (EIS) tests in 3.5% NaCl solution. The results indicate that Mn addition enhances the corrosion resistance of the as-dipped coatings. The dense corrosion products formed on the top η layer of the Zn–Mn coatings after Tafel polarization corrosion are assumed to inhibit the further corrosion of the coating. However, minor effects of Mn addition to the anti-corrosion performance of ζ layer were noticed. Zeng, Jianmin oth Enthalten in Elsevier Science Bai, Binglin ELSEVIER A high efficiency solar steam generation system with using residual heat to enhance steam escape 2020 Amsterdam [u.a.] (DE-627)ELV004415906 volume:245 year:2014 day:25 month:04 pages:55-65 extent:11 https://doi.org/10.1016/j.surfcoat.2014.02.040 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 58.51 Abwassertechnik Wasseraufbereitung VZ AR 245 2014 25 0425 55-65 11 045F 620 |
| allfields_unstemmed |
10.1016/j.surfcoat.2014.02.040 doi GBVA2014008000023.pica (DE-627)ELV022608419 (ELSEVIER)S0257-8972(14)00159-5 DE-627 ger DE-627 rakwb eng 620 670 620 DE-600 670 DE-600 570 690 VZ 58.51 bkl Wang, Youbin verfasserin aut Effects of manganese addition on microstructures and corrosion behavior of hot-dip zinc coatings of hot-rolled steels 2014transfer abstract 11 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier In the present work, the Zn coatings of hot-rolled steel sheets with different Mn additions were prepared by hot dipping process. The effects of Mn addition on the microstructures and corrosion resistances of the hot-dip Zn coatings were investigated by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and X-ray diffractometry (XRD). The Mn distribution in δ-layer is lower than that of ζ-layer. Mn addition could promote the growth of δ-layer of the coating and inhibit the growth of the columnar ζ phase which morphology was changed to discontinuous phase. It is also found that the surface color of Zn–Mn coating varies with the dipping temperatures. Such phenomenon is supposed to be attributed to the optical interference effect of the Mn oxide film formed on the coating surface. For the corrosion behavior, the as-dipped and ζ layer-exposed Zn coatings were subjected to both Tafel polarization measurements and electrochemical impedance spectroscopy (EIS) tests in 3.5% NaCl solution. The results indicate that Mn addition enhances the corrosion resistance of the as-dipped coatings. The dense corrosion products formed on the top η layer of the Zn–Mn coatings after Tafel polarization corrosion are assumed to inhibit the further corrosion of the coating. However, minor effects of Mn addition to the anti-corrosion performance of ζ layer were noticed. In the present work, the Zn coatings of hot-rolled steel sheets with different Mn additions were prepared by hot dipping process. The effects of Mn addition on the microstructures and corrosion resistances of the hot-dip Zn coatings were investigated by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and X-ray diffractometry (XRD). The Mn distribution in δ-layer is lower than that of ζ-layer. Mn addition could promote the growth of δ-layer of the coating and inhibit the growth of the columnar ζ phase which morphology was changed to discontinuous phase. It is also found that the surface color of Zn–Mn coating varies with the dipping temperatures. Such phenomenon is supposed to be attributed to the optical interference effect of the Mn oxide film formed on the coating surface. For the corrosion behavior, the as-dipped and ζ layer-exposed Zn coatings were subjected to both Tafel polarization measurements and electrochemical impedance spectroscopy (EIS) tests in 3.5% NaCl solution. The results indicate that Mn addition enhances the corrosion resistance of the as-dipped coatings. The dense corrosion products formed on the top η layer of the Zn–Mn coatings after Tafel polarization corrosion are assumed to inhibit the further corrosion of the coating. However, minor effects of Mn addition to the anti-corrosion performance of ζ layer were noticed. Zeng, Jianmin oth Enthalten in Elsevier Science Bai, Binglin ELSEVIER A high efficiency solar steam generation system with using residual heat to enhance steam escape 2020 Amsterdam [u.a.] (DE-627)ELV004415906 volume:245 year:2014 day:25 month:04 pages:55-65 extent:11 https://doi.org/10.1016/j.surfcoat.2014.02.040 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 58.51 Abwassertechnik Wasseraufbereitung VZ AR 245 2014 25 0425 55-65 11 045F 620 |
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10.1016/j.surfcoat.2014.02.040 doi GBVA2014008000023.pica (DE-627)ELV022608419 (ELSEVIER)S0257-8972(14)00159-5 DE-627 ger DE-627 rakwb eng 620 670 620 DE-600 670 DE-600 570 690 VZ 58.51 bkl Wang, Youbin verfasserin aut Effects of manganese addition on microstructures and corrosion behavior of hot-dip zinc coatings of hot-rolled steels 2014transfer abstract 11 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier In the present work, the Zn coatings of hot-rolled steel sheets with different Mn additions were prepared by hot dipping process. The effects of Mn addition on the microstructures and corrosion resistances of the hot-dip Zn coatings were investigated by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and X-ray diffractometry (XRD). The Mn distribution in δ-layer is lower than that of ζ-layer. Mn addition could promote the growth of δ-layer of the coating and inhibit the growth of the columnar ζ phase which morphology was changed to discontinuous phase. It is also found that the surface color of Zn–Mn coating varies with the dipping temperatures. Such phenomenon is supposed to be attributed to the optical interference effect of the Mn oxide film formed on the coating surface. For the corrosion behavior, the as-dipped and ζ layer-exposed Zn coatings were subjected to both Tafel polarization measurements and electrochemical impedance spectroscopy (EIS) tests in 3.5% NaCl solution. The results indicate that Mn addition enhances the corrosion resistance of the as-dipped coatings. The dense corrosion products formed on the top η layer of the Zn–Mn coatings after Tafel polarization corrosion are assumed to inhibit the further corrosion of the coating. However, minor effects of Mn addition to the anti-corrosion performance of ζ layer were noticed. In the present work, the Zn coatings of hot-rolled steel sheets with different Mn additions were prepared by hot dipping process. The effects of Mn addition on the microstructures and corrosion resistances of the hot-dip Zn coatings were investigated by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and X-ray diffractometry (XRD). The Mn distribution in δ-layer is lower than that of ζ-layer. Mn addition could promote the growth of δ-layer of the coating and inhibit the growth of the columnar ζ phase which morphology was changed to discontinuous phase. It is also found that the surface color of Zn–Mn coating varies with the dipping temperatures. Such phenomenon is supposed to be attributed to the optical interference effect of the Mn oxide film formed on the coating surface. For the corrosion behavior, the as-dipped and ζ layer-exposed Zn coatings were subjected to both Tafel polarization measurements and electrochemical impedance spectroscopy (EIS) tests in 3.5% NaCl solution. The results indicate that Mn addition enhances the corrosion resistance of the as-dipped coatings. The dense corrosion products formed on the top η layer of the Zn–Mn coatings after Tafel polarization corrosion are assumed to inhibit the further corrosion of the coating. However, minor effects of Mn addition to the anti-corrosion performance of ζ layer were noticed. Zeng, Jianmin oth Enthalten in Elsevier Science Bai, Binglin ELSEVIER A high efficiency solar steam generation system with using residual heat to enhance steam escape 2020 Amsterdam [u.a.] (DE-627)ELV004415906 volume:245 year:2014 day:25 month:04 pages:55-65 extent:11 https://doi.org/10.1016/j.surfcoat.2014.02.040 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 58.51 Abwassertechnik Wasseraufbereitung VZ AR 245 2014 25 0425 55-65 11 045F 620 |
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10.1016/j.surfcoat.2014.02.040 doi GBVA2014008000023.pica (DE-627)ELV022608419 (ELSEVIER)S0257-8972(14)00159-5 DE-627 ger DE-627 rakwb eng 620 670 620 DE-600 670 DE-600 570 690 VZ 58.51 bkl Wang, Youbin verfasserin aut Effects of manganese addition on microstructures and corrosion behavior of hot-dip zinc coatings of hot-rolled steels 2014transfer abstract 11 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier In the present work, the Zn coatings of hot-rolled steel sheets with different Mn additions were prepared by hot dipping process. The effects of Mn addition on the microstructures and corrosion resistances of the hot-dip Zn coatings were investigated by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and X-ray diffractometry (XRD). The Mn distribution in δ-layer is lower than that of ζ-layer. Mn addition could promote the growth of δ-layer of the coating and inhibit the growth of the columnar ζ phase which morphology was changed to discontinuous phase. It is also found that the surface color of Zn–Mn coating varies with the dipping temperatures. Such phenomenon is supposed to be attributed to the optical interference effect of the Mn oxide film formed on the coating surface. For the corrosion behavior, the as-dipped and ζ layer-exposed Zn coatings were subjected to both Tafel polarization measurements and electrochemical impedance spectroscopy (EIS) tests in 3.5% NaCl solution. The results indicate that Mn addition enhances the corrosion resistance of the as-dipped coatings. The dense corrosion products formed on the top η layer of the Zn–Mn coatings after Tafel polarization corrosion are assumed to inhibit the further corrosion of the coating. However, minor effects of Mn addition to the anti-corrosion performance of ζ layer were noticed. In the present work, the Zn coatings of hot-rolled steel sheets with different Mn additions were prepared by hot dipping process. The effects of Mn addition on the microstructures and corrosion resistances of the hot-dip Zn coatings were investigated by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and X-ray diffractometry (XRD). The Mn distribution in δ-layer is lower than that of ζ-layer. Mn addition could promote the growth of δ-layer of the coating and inhibit the growth of the columnar ζ phase which morphology was changed to discontinuous phase. It is also found that the surface color of Zn–Mn coating varies with the dipping temperatures. Such phenomenon is supposed to be attributed to the optical interference effect of the Mn oxide film formed on the coating surface. For the corrosion behavior, the as-dipped and ζ layer-exposed Zn coatings were subjected to both Tafel polarization measurements and electrochemical impedance spectroscopy (EIS) tests in 3.5% NaCl solution. The results indicate that Mn addition enhances the corrosion resistance of the as-dipped coatings. The dense corrosion products formed on the top η layer of the Zn–Mn coatings after Tafel polarization corrosion are assumed to inhibit the further corrosion of the coating. However, minor effects of Mn addition to the anti-corrosion performance of ζ layer were noticed. Zeng, Jianmin oth Enthalten in Elsevier Science Bai, Binglin ELSEVIER A high efficiency solar steam generation system with using residual heat to enhance steam escape 2020 Amsterdam [u.a.] (DE-627)ELV004415906 volume:245 year:2014 day:25 month:04 pages:55-65 extent:11 https://doi.org/10.1016/j.surfcoat.2014.02.040 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 58.51 Abwassertechnik Wasseraufbereitung VZ AR 245 2014 25 0425 55-65 11 045F 620 |
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Enthalten in A high efficiency solar steam generation system with using residual heat to enhance steam escape Amsterdam [u.a.] volume:245 year:2014 day:25 month:04 pages:55-65 extent:11 |
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A high efficiency solar steam generation system with using residual heat to enhance steam escape |
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The effects of Mn addition on the microstructures and corrosion resistances of the hot-dip Zn coatings were investigated by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and X-ray diffractometry (XRD). The Mn distribution in δ-layer is lower than that of ζ-layer. Mn addition could promote the growth of δ-layer of the coating and inhibit the growth of the columnar ζ phase which morphology was changed to discontinuous phase. It is also found that the surface color of Zn–Mn coating varies with the dipping temperatures. Such phenomenon is supposed to be attributed to the optical interference effect of the Mn oxide film formed on the coating surface. For the corrosion behavior, the as-dipped and ζ layer-exposed Zn coatings were subjected to both Tafel polarization measurements and electrochemical impedance spectroscopy (EIS) tests in 3.5% NaCl solution. The results indicate that Mn addition enhances the corrosion resistance of the as-dipped coatings. The dense corrosion products formed on the top η layer of the Zn–Mn coatings after Tafel polarization corrosion are assumed to inhibit the further corrosion of the coating. However, minor effects of Mn addition to the anti-corrosion performance of ζ layer were noticed.</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">In the present work, the Zn coatings of hot-rolled steel sheets with different Mn additions were prepared by hot dipping process. The effects of Mn addition on the microstructures and corrosion resistances of the hot-dip Zn coatings were investigated by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and X-ray diffractometry (XRD). The Mn distribution in δ-layer is lower than that of ζ-layer. Mn addition could promote the growth of δ-layer of the coating and inhibit the growth of the columnar ζ phase which morphology was changed to discontinuous phase. It is also found that the surface color of Zn–Mn coating varies with the dipping temperatures. Such phenomenon is supposed to be attributed to the optical interference effect of the Mn oxide film formed on the coating surface. For the corrosion behavior, the as-dipped and ζ layer-exposed Zn coatings were subjected to both Tafel polarization measurements and electrochemical impedance spectroscopy (EIS) tests in 3.5% NaCl solution. The results indicate that Mn addition enhances the corrosion resistance of the as-dipped coatings. The dense corrosion products formed on the top η layer of the Zn–Mn coatings after Tafel polarization corrosion are assumed to inhibit the further corrosion of the coating. 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A high efficiency solar steam generation system with using residual heat to enhance steam escape |
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effects of manganese addition on microstructures and corrosion behavior of hot-dip zinc coatings of hot-rolled steels |
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Effects of manganese addition on microstructures and corrosion behavior of hot-dip zinc coatings of hot-rolled steels |
| abstract |
In the present work, the Zn coatings of hot-rolled steel sheets with different Mn additions were prepared by hot dipping process. The effects of Mn addition on the microstructures and corrosion resistances of the hot-dip Zn coatings were investigated by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and X-ray diffractometry (XRD). The Mn distribution in δ-layer is lower than that of ζ-layer. Mn addition could promote the growth of δ-layer of the coating and inhibit the growth of the columnar ζ phase which morphology was changed to discontinuous phase. It is also found that the surface color of Zn–Mn coating varies with the dipping temperatures. Such phenomenon is supposed to be attributed to the optical interference effect of the Mn oxide film formed on the coating surface. For the corrosion behavior, the as-dipped and ζ layer-exposed Zn coatings were subjected to both Tafel polarization measurements and electrochemical impedance spectroscopy (EIS) tests in 3.5% NaCl solution. The results indicate that Mn addition enhances the corrosion resistance of the as-dipped coatings. The dense corrosion products formed on the top η layer of the Zn–Mn coatings after Tafel polarization corrosion are assumed to inhibit the further corrosion of the coating. However, minor effects of Mn addition to the anti-corrosion performance of ζ layer were noticed. |
| abstractGer |
In the present work, the Zn coatings of hot-rolled steel sheets with different Mn additions were prepared by hot dipping process. The effects of Mn addition on the microstructures and corrosion resistances of the hot-dip Zn coatings were investigated by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and X-ray diffractometry (XRD). The Mn distribution in δ-layer is lower than that of ζ-layer. Mn addition could promote the growth of δ-layer of the coating and inhibit the growth of the columnar ζ phase which morphology was changed to discontinuous phase. It is also found that the surface color of Zn–Mn coating varies with the dipping temperatures. Such phenomenon is supposed to be attributed to the optical interference effect of the Mn oxide film formed on the coating surface. For the corrosion behavior, the as-dipped and ζ layer-exposed Zn coatings were subjected to both Tafel polarization measurements and electrochemical impedance spectroscopy (EIS) tests in 3.5% NaCl solution. The results indicate that Mn addition enhances the corrosion resistance of the as-dipped coatings. The dense corrosion products formed on the top η layer of the Zn–Mn coatings after Tafel polarization corrosion are assumed to inhibit the further corrosion of the coating. However, minor effects of Mn addition to the anti-corrosion performance of ζ layer were noticed. |
| abstract_unstemmed |
In the present work, the Zn coatings of hot-rolled steel sheets with different Mn additions were prepared by hot dipping process. The effects of Mn addition on the microstructures and corrosion resistances of the hot-dip Zn coatings were investigated by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and X-ray diffractometry (XRD). The Mn distribution in δ-layer is lower than that of ζ-layer. Mn addition could promote the growth of δ-layer of the coating and inhibit the growth of the columnar ζ phase which morphology was changed to discontinuous phase. It is also found that the surface color of Zn–Mn coating varies with the dipping temperatures. Such phenomenon is supposed to be attributed to the optical interference effect of the Mn oxide film formed on the coating surface. For the corrosion behavior, the as-dipped and ζ layer-exposed Zn coatings were subjected to both Tafel polarization measurements and electrochemical impedance spectroscopy (EIS) tests in 3.5% NaCl solution. The results indicate that Mn addition enhances the corrosion resistance of the as-dipped coatings. The dense corrosion products formed on the top η layer of the Zn–Mn coatings after Tafel polarization corrosion are assumed to inhibit the further corrosion of the coating. However, minor effects of Mn addition to the anti-corrosion performance of ζ layer were noticed. |
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Effects of manganese addition on microstructures and corrosion behavior of hot-dip zinc coatings of hot-rolled steels |
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