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Non-destructive measurement of the depth profile of the constituent in iron oxide scale by X-ray diffraction at SPring-8

Published online by Cambridge University Press:  14 January 2011

M. Sato ,
T. Doi ,
Y. Hidaka ,
Y. Higashida ,
Y. Masaki  and
N. Otsuka
M. Sato*
Affiliation:
Japan Synchrotron Radiation Research Institute, 1-1-1 Kouto, Sayo, Hyogo 679-5198, Japan
T. Doi
Affiliation:
Corporate Research and Development Laboratories, Sumitomo Metal Industries, Ltd., 1-8 Fuso-cho, Amagasaki, Hyogo 660-0891, Japan
Y. Hidaka
Affiliation:
Corporate Research and Development Laboratories, Sumitomo Metal Industries, Ltd., 1-8 Fuso-cho, Amagasaki, Hyogo 660-0891, Japan
Y. Higashida
Affiliation:
Corporate Research and Development Laboratories, Sumitomo Metal Industries, Ltd., 1-8 Fuso-cho, Amagasaki, Hyogo 660-0891, Japan
Y. Masaki
Affiliation:
Corporate Research and Development Laboratories, Sumitomo Metal Industries, Ltd., 1-8 Fuso-cho, Amagasaki, Hyogo 660-0891, Japan
N. Otsuka
Affiliation:
Corporate Research and Development Laboratories, Sumitomo Metal Industries, Ltd., 1-8 Fuso-cho, Amagasaki, Hyogo 660-0891, Japan
*
†Email address for correspondence:msato@spring8.or.jp
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Abstract

The depth profiles of the constituent in iron oxide scales were investigated by X-ray diffraction measurement with controlling X-ray penetration depth at SPring-8. We successfully observed the interface region of scales non-destructively using X-ray with energy of 28 keV. The results indicated that the volume fraction ratio of Fe3O4 to FeO around the surface of samples increased by isothermal heat treatment. This suggested that the transformation of FeO to Fe3O4 due to isothermal heat treatment proceeds from surface into the inside of scale.

Type
Contributed paper
Information
Diamond Light Source Proceedings , Volume 1 , Issue SRMS-7 , October 2010 , e124
Copyright
Copyright © Diamond Light Source Ltd 2011

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References

REFERENCES

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Sato, M., Sano, Y., Kajiwara, K., Tanaka, H. & Akita, K. 2007 Non-destructive measurement of residual stress depth profile in a laser-peened steel at SPring-8. In The Ninth International Conference on Synchrotron Radiation Instrumentation – AIP Conference Proceedings, vol. 879, pp. 1577–1580.Google Scholar