Oxide Film Properties on an Interstitial-Free Manganese alloyed Steel in Sodium Sulphate Solution

The electronic properties of the interfacial oxide film formed on 304L stainless steel in high temperature water are investigated by contact electric resistance (CER) measurements. Tests are performed in pure water with a wide range of dissolved oxygen (DO) content at 200, 250, and 288°C. The electrochemical potential (ECP) moves in the noble direction and CER increases when increasing DO. Results show that DO content has a dominant effect on the electronic properties of oxide film. The change of oxide film properties can also be attributed to the variation of the electrochemical potential, which is directly affected by DO content. Critical potentials exist for the formation and reduction of oxide films in high temperature water. Multiple steps are found for the reduction of oxide films due to de-aeration in 200, 250, and 288°C water, implying the presence of multiple-layer interfacial oxide films. The film reduction process is relatively slower than the film formation process. Present results show that even in high purity water, a moderate change of DO content can result in different surface conditions. Dissolved hydrogen has a moderate effect on interfacial surface films in deaerated water. In-situ monitoring of the oxide film properties by CER technique provides information on the interfacial reactions that are related to the SCC behavior of materials in high temperature water environments.

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Tailoring silicon oxide film properties by tuning the laser beam-to-substrate distance in ArF laser-induced chemical vapor deposition

Thin Solid Films ◽

10.1016/0040-6090(94)90401-4 ◽

1994 ◽

Vol 241 (1-2) ◽

pp. 80-83 ◽

Cited By ~ 1

Author(s):

T. Szörényi ◽

P. González ◽

E. Garcá ◽

J. Pou ◽

D. Fernández ◽

...

Keyword(s):

Chemical Vapor Deposition ◽

Oxide Film ◽

Laser Beam ◽

Vapor Deposition ◽

Silicon Oxide ◽

Chemical Vapor ◽

Film Properties ◽

Silicon Oxide Film ◽

Substrate Distance ◽

Arf Laser

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Thaumasite formation in limestone filler cements exposed to sodium sulphate solution at 20 °C

Cement and Concrete Composites ◽

10.1016/j.cemconcomp.2003.10.003 ◽

2005 ◽

Vol 27 (1) ◽

pp. 77-84 ◽

Cited By ~ 53

Author(s):

E.F. Irassar ◽

V.L. Bonavetti ◽

M.A. Trezza ◽

M.A. González

Keyword(s):

Sodium Sulphate ◽

Sulphate Solution ◽

Limestone Filler

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On the Anomaly of the Conductive Properties near the Transition Point of Sodium Sulphate Solution.

Nippon kagaku zassi ◽

10.1246/nikkashi1948.79.648 ◽

1958 ◽

Vol 79 (5) ◽

pp. 648-649

Author(s):

Koichi Hirano

Keyword(s):

Transition Point ◽

Sodium Sulphate ◽

Sulphate Solution ◽

Conductive Properties

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