Zairyo-to-Kankyo
Online ISSN : 1881-9664
Print ISSN : 0917-0480
Changes in the Depth Profile of Surface Films on Alloy 600 in High Temperature Water
Takeshi SakaiKazuhiko AokiToshinori ShigemitsuYasutada Kishi
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1992 Volume 41 Issue 2 Pages 75-82

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Abstract

The aqueous oxidation of Alloy 600MA (mill annealed) and TT (thermally treated) materials in acidic, neutral and basic pHs (pH 4.5, 7, 10 and 14) under low and high dissolved oxygen concentrations (DO2<5ppb, ≅4ppm) has been studied using a once-through (refreshed) autoclave and Auger electron spectroscopy. The in-depth profile of composition of oxide films on Alloy 600 was measured using an argon sputtering method. Both pH and DO2 have an effect on oxide film composition and also a change in these parameters is reflected by a change in the film depth profile.

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© Japan Society of Corrosion Engineering
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