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Non-Destructive X-Ray Diffraction Analysis of the Under-Film Corrosion Processes in Zinc-Coated Steel Sheets by Synchrotron Radiation

Published online by Cambridge University Press:  25 February 2011

K. Nose ,
K. Kawasaki ,
K. Hayashi ,
H. Morikawa  and
S. Sasaki
K. Nose
Affiliation:
Advanced Materials & Technology Research Laboratories, Nippon Steel Corp., 1618 Ida, Nakahara-ku, Kawasaki 211, JAPAN
K. Kawasaki
Affiliation:
Advanced Materials & Technology Research Laboratories, Nippon Steel Corp., 1618 Ida, Nakahara-ku, Kawasaki 211, JAPAN
K. Hayashi
Affiliation:
Steel Research Laboratories, Nippon Steel Corp., 20–1 Shintomi, Futtsu 299–12, JAPAN
H. Morikawa
Affiliation:
Advanced Materials & Technology Research Laboratories, Nippon Steel Corp., 1618 Ida, Nakahara-ku, Kawasaki 211, JAPAN
S. Sasaki
Affiliation:
Photon Factory, National Laboratory for High Energy Physics (KEK), Tsukuba 305, JAPAN
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Abstract

A highly brilliant x-ray beam from a synchrotron radiation source is a powerful tool to perform non-destructive x-ray diffraction analysis of an under-film corroded region of zinc-coated steel sheets. Investigations to identify corrosion products under the outdoor salt-spray test condition and to reveal their one-dimensional distribution were carried out Simonkolleite (ZnCl2•4Zn(OH)2 ) was identified for the first time at the tip of the under-film corroded region. By the one-dimensional analysis, it was shown that the x-ray diffraction intensity of simonkolleite increased, where that of metal zinc decreased. It was suggested that simonkolleite was formed as the first corrosion product under the outdoor salt-spray test condition.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 280: Symposium B – Evolution of Surface and Thin Film Microstructure , 1992 , 557
Copyright
Copyright © Materials Research Society 1993

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References

REFERENCES

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