Effect of galvannealing conditions on Mössbauer spectroscopy parameters of Fe-Zn intermetallic phases

ZMRZLÝ, M.; SCHNEEWEISS, O.; FIALA, J.; HOUBAERT, Y.

Original Title

Effect of galvannealing conditions on Mössbauer spectroscopy parameters of Fe-Zn intermetallic phases

English Title

Effect of galvannealing conditions on Mössbauer spectroscopy parameters of Fe-Zn intermetallic phases

Type

Lecture

Original Abstract

Mössbauer spectra of Fe-Zn intermetallic phases in real coating at steel were obtained. Results are comparable with values of laboratory samples of pure Fe-Zn phases. The most stabile phase of the system in temperature range 480 - 600 oC is delta phase. At 680oC pure gamma phase was obtained. It was confirmed that iron atoms diffusing into existing delta phase enter structure sites C. Effect of the technological parameters on IS negligible, QS increases with longer dipping time and higher annealing temperature and decreases with longer annealing time. On the surface of the coating oxidation takes place involving changes in Mössbauer parameters as well as existence of individual oxide phases containing Fe3+.

English abstract

Mössbauer spectra of Fe-Zn intermetallic phases in real coating at steel were obtained. Results are comparable with values of laboratory samples of pure Fe-Zn phases. The most stabile phase of the system in temperature range 480 - 600 oC is delta phase. At 680oC pure gamma phase was obtained. It was confirmed that iron atoms diffusing into existing delta phase enter structure sites C. Effect of the technological parameters on IS negligible, QS increases with longer dipping time and higher annealing temperature and decreases with longer annealing time. On the surface of the coating oxidation takes place involving changes in Mössbauer parameters as well as existence of individual oxide phases containing Fe3+.

Keywords

Mossbauer spectroscopy, zinc coatings, intermetallic phases

Key words in English

Mossbauer spectroscopy, zinc coatings, intermetallic phases

Authors

ZMRZLÝ, M.; SCHNEEWEISS, O.; FIALA, J.; HOUBAERT, Y.

Released

21.03.2003

Location

Gent,B

Full text in the Digital Library

http://hdl.handle.net/

BibTex

@misc{BUT65462,
  author="Martin {Zmrzlý} and Oldřich {Schneeweiss} and Jaroslav {Fiala} and Yvan {Houbaert}",
  title="Effect of galvannealing conditions on Mössbauer spectroscopy parameters of Fe-Zn intermetallic phases",
  year="2003",
  address="Gent,B"
}