Ti oxidation states in Zn(Ti) coating of hot-dip galvanized steels

V. Takáts, József Hakl, A. Csík, Helga F. Bereczki, Gábor Lévai, Melinda Godzsák, Tamás I. Török, George Kaptay, Kálmán Vad

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Chemical composition analysis of coloured surface layers of hot-dip galvanized steel sheets was studied. Samples were produced in laboratory scale and studied by mass spectrometry and electron spectroscopy methods. Zinc bath alloyed with 0.15 wt% titanium content resulted in surfaces with different colours depending on the bath temperature. We proved that surface colour was determined by the thickness of surface titanium-oxide layer created during sample cooling from the bath temperature. The bath temperature dependence of the titanium-oxide layer thickness gives information about the activation energy of its formation, which is essentially the activation energy of Ti diffusion through the oxide layer. Surfaces of hot-dip galvanized samples were studied by X-ray Photoelectron Spectroscopy. Different oxidation states of titanium were identified in the oxide layer. By our measurements we could prove that depth profiling methods using low energy ion beams for surface sputtering can be applicable to determination of chemical states without modifying them. Finally, we provided experimental evidence that the surface colour was determined by light interference.

Original languageEnglish
Pages (from-to)121-125
Number of pages5
JournalSurface and Coatings Technology
Volume326
DOIs
Publication statusPublished - Oct 15 2017

Fingerprint

Steel
steels
coatings
Coatings
Oxidation
oxidation
baths
color
Titanium oxides
titanium oxides
Titanium
Color
Oxides
titanium
activation energy
Activation energy
oxides
Light interference
Electron spectroscopy
Depth profiling

Keywords

  • Colouring hot-dip galvanization
  • Oxide layer structure
  • Secondary neutral mass spectrometry
  • Titanium-oxide states
  • Zn(Ti) coating

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

Ti oxidation states in Zn(Ti) coating of hot-dip galvanized steels. / Takáts, V.; Hakl, József; Csík, A.; Bereczki, Helga F.; Lévai, Gábor; Godzsák, Melinda; Török, Tamás I.; Kaptay, George; Vad, Kálmán.

In: Surface and Coatings Technology, Vol. 326, 15.10.2017, p. 121-125.

Research output: Contribution to journalArticle

Takáts, V, Hakl, J, Csík, A, Bereczki, HF, Lévai, G, Godzsák, M, Török, TI, Kaptay, G & Vad, K 2017, 'Ti oxidation states in Zn(Ti) coating of hot-dip galvanized steels', Surface and Coatings Technology, vol. 326, pp. 121-125. https://doi.org/10.1016/j.surfcoat.2017.07.024
Takáts, V. ; Hakl, József ; Csík, A. ; Bereczki, Helga F. ; Lévai, Gábor ; Godzsák, Melinda ; Török, Tamás I. ; Kaptay, George ; Vad, Kálmán. / Ti oxidation states in Zn(Ti) coating of hot-dip galvanized steels. In: Surface and Coatings Technology. 2017 ; Vol. 326. pp. 121-125.
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AB - Chemical composition analysis of coloured surface layers of hot-dip galvanized steel sheets was studied. Samples were produced in laboratory scale and studied by mass spectrometry and electron spectroscopy methods. Zinc bath alloyed with 0.15 wt% titanium content resulted in surfaces with different colours depending on the bath temperature. We proved that surface colour was determined by the thickness of surface titanium-oxide layer created during sample cooling from the bath temperature. The bath temperature dependence of the titanium-oxide layer thickness gives information about the activation energy of its formation, which is essentially the activation energy of Ti diffusion through the oxide layer. Surfaces of hot-dip galvanized samples were studied by X-ray Photoelectron Spectroscopy. Different oxidation states of titanium were identified in the oxide layer. By our measurements we could prove that depth profiling methods using low energy ion beams for surface sputtering can be applicable to determination of chemical states without modifying them. Finally, we provided experimental evidence that the surface colour was determined by light interference.

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