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ASTM Selected Technical Papers
Zirconium in the Nuclear Industry
By
DG Franklin
DG Franklin
1
Program manager
,
Core Materials, Electric Power Research Institute
,
Palo Alto, Calif. 94303
;
coeditor
.
Search for other works by this author on:
RB Adamson
RB Adamson
2
Manager
,
Core Materials Testing and Analysis, General Electric Corp.
,
Pleasanton, Calif. 94566
;
coeditor
.
Search for other works by this author on:
ISBN-10:
0-8031-0270-4
ISBN:
978-0-8031-0270-5
No. of Pages:
858
Publisher:
ASTM International
Publication date:
1984

In an effort to understand observed differences in high-temperature steam corrosion resistance, high-frequency (>500 Hz) a-c impedance measurements have been used to monitor the permeability of oxidation films formed on Zircaloy-2 and Zircaloy-4 specimens exposed to high-temperature steam. Differences in oxidation resistance are related to differences in oxidation film permeability and ultimately to film characteristics. When these results are added to the existing data base established for zirconium alloy oxidation films using the high-frequency impedance technique, improved understanding of the role of bulk corrodent access to the metal-oxide interface during oxidation becomes possible. In addition, differences in film character resulting from differences in oxidation environment become apparent upon review of the existing data base. Such differences may have practical application in selecting material preconditioning procedures and suggest explanations for some oxide film memory effects reported in the literature.

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American Society for Testing and Materials
,
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,
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, ASTM STP 551,
American Society for Testing and Materials
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and
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in
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,
The Metallurgical Society of the American Institute of Mining, Metallurgical and Petroleum Engineers
,
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,
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31.
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,
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33.
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,
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Atomic Energy of Canada Ltd.
,
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,
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,
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,”
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,
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38.
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,
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,
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85
,
1981
, p. 3708.
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