Hostname: page-component-78c5997874-s2hrs Total loading time: 0 Render date: 2024-11-14T22:54:10.392Z Has data issue: false hasContentIssue false
  • English
  • Français

Corrosion Product Identification by Micro-Raman and Mossbauer Spectroscopy

Published online by Cambridge University Press:  02 July 2020

F. Adar ,
B. Lenain ,
D. C. Cook  and
S. J. Oh
F. Adar
Affiliation:
Instruments S.A. Inc., Edison, New Jersey, 08820U.S.A.
B. Lenain
Affiliation:
Instruments S.A. Inc., Edison, New Jersey, 08820U.S.A.
D. C. Cook
Affiliation:
Department of Physics, Old Dominion University, Norfolk, Virginia, 23529U.S.A.
S. J. Oh
Affiliation:
Department of Physics, Old Dominion University, Norfolk, Virginia, 23529U.S.A.
Get access

Extract

Micro-Raman spectrometry and Mossbauer spectroscopy have been used to identify the corrosion products on a steel coupon exposed in an industrial environment for 16 years. The Raman analysis was performed on a polished metallographic cross-section in order to map the oxides across the thickness of the coating. The spectra were recorded using a LabRam Micro-Raman spectrograph incorporating a 17 mW HeNe laser (attenuated to 1 mW to prevent oxide transformation), focused to 1 μm spot size, and 1800 g/mm grating. The confocal line-scan imaging enabled 100 spectra to be recorded in one scan at 0.5 um intervals across the thickness of the coating. The Mossbauer analysis was performed using in-situ scattering Mossbauer spectroscopy on the attached corrosion coating and transmission Mossbauer spectroscopy at 300K and 77K on the removed coating, to measure the fraction of each oxide present. Micro-Raman spectrometry showed that the corrosion products had formed in distinct layers as shown in Figure 1.

Type
Microscopy and Microanalysis in the “Real World”
Information
Microscopy and Microanalysis , Volume 4 , Issue S2: Proceedings: Microscopy & Microanalysis '98, Microscopy Society of America 56th Annual Meeting, Microbeam Analysis Society 32nd Annual Meeting, Atlanta, Georgia July 12-16, 1998 , July 1998 , pp. 506 - 507
Copyright
Copyright © Microscopy Society of America

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1 Oh, S.J.. Cook, D.C. and Townsend, H.E., Hyperfine Interactions 112(1998)59.CrossRefGoogle Scholar

2. Morup, , Dumesic, J.A. and Topsoe, H., in Applications of Mossbauer Spectroscopy, Vol. II, ed. Cohen, R.L. (Academic Press, New York, 1980).Google Scholar

3. Cabral-Prieto, A. and Reyes-Felipe, A., “Synthesis and Characterization of Nanophasic Goethite,”CANCUN'97, International Materials Research Congress, Cancun, Mexico, 1997.Google Scholar