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Corrosion Resistance of Artificial Passive Film and Real Passive Film on Fe-Ti Alloy
Metals and Materials, 1998The corrosion resistances of Fe2O3-TiO2 artificial passive film and real passive film on the sputter-deposited Fe-Ti alloy films were examined in acid solutions. The Fe2O3-TiO2 films containing less than XTi=0.70 have a spinal structure, the films containing more than XTi=0.70 have an amorphous structure. The dissolution rate of the Fe2O2-TiO2 films in
Hyunsoo Kim +2 more
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STUDY OF PASSIVATED FILMS OF GaSb
Modern Physics Letters B, 2001Thin anodie oxides (5-10 μm) were formed on n-GaSb (100) substrates by electrochemical method under galvanostatic regime employing an aqueous solution (citric acid/hydrogen peroxide), at volume ratio of 5:1, changing the time of growth. The thickness and index of refraction, thermal diffusivity and quality of passivated films were obtained by IR ...
M. I. REYES-VALDERRAMA +4 more
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The characterisation of passive films on brass
Corrosion Science, 1992The semiconducting properties of the passive film formed on 70Cu-30Zn brass in 0.1 N NaOH were evaluated by measuring photopotential, capacitance, absorption spectrum, etc. The film behaves like a p-type semiconductor. The changes in the properties of the film with the addition of chloride ions are discussed.
S. Sathiyanarayanan +3 more
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The capacity of thin passive films
Journal of Electroanalytical Chemistry, 1980Abstract The capacity of thin passive films on metal electrodes is investigated. Two contributions are reported: one from the space charge in the film and one from the surface charge on the underlying metal. In the usual Schottky-Mott plot such films also exhibit a linear region, but this cannot ordinarily be used to obtain the carrier concentration ...
Shahed U.M. Khan, Wolfgang Schmickler
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Zeitschrift für Elektrochemie, Berichte der Bunsengesellschaft für physikalische Chemie, 1958
AbstractAn “Inhibitor” is something added to a corrosive liquid to render it non‐corrosive; “passivity” is a change in the metal remaining after it has emerged from the “inhibiting” bath, enabling it to resist liquids which normally would corrode it. The object of the paper is to ask whether passivity is due to (1) a three‐dimensional film (2) a two ...
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AbstractAn “Inhibitor” is something added to a corrosive liquid to render it non‐corrosive; “passivity” is a change in the metal remaining after it has emerged from the “inhibiting” bath, enabling it to resist liquids which normally would corrode it. The object of the paper is to ask whether passivity is due to (1) a three‐dimensional film (2) a two ...
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Breakdown of Passive Film on Iron
Corrosion, 1984The breakdown of passive films potentiostatically formed on iron in borate and phosphate solutions of pH 8.42 and 11.50 is investigated in 0.5 kmol/m3 NaCl solution at a constant potential of –0.195 V(SHE) higher than a critical pitting potential of –0.295 V in the same solution. The investigation revealed that the logarithmic plots for pitting current
Rokuro Nishimura +2 more
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Characterisation of passive films on copper
British Corrosion Journal, 1992Abstract The photopotentials of passive films formed on copper in sodium hydroxide solutions have been measured using high power mercury—xenon sources of various wavelengths after various periods of illumination. The film exhibits logarithmic growth kinetics and a positive photopotential.
S. Sathiyanarayanan +3 more
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The breakdown of passive films on iron
Corrosion Science, 1988Abstract Experimental measurements of pit initiation potential support the idea that the first stages of localized passive film breakdown depend upon the competition for adsorption, at the oxide/liquid interface, between hydroxyl ions and aggressive anions such as the chloride ion.
H.E.H. Bird, B.R. Pearson, P.A. Brook
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Discontinuous Fabrication of Passive Film
ECS Meeting Abstracts, 2009Abstract not Available.
Hiroshi Nanjo +8 more
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Passivation and Surface Film Formation
1996Passivation is a process in which the metal surface transforms from an active state to an inactive state owing to the formation of a barrier layer. The passivation of zinc has been the subject of numerous studies as shown in Table 3.1. It should be noted that there is a clear difference between the studies made in strong alkaline solutions and those ...
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