The effect of the structure-phase state of iron-cementite nanocomposites on local activation processes

Studies of the local activation of iron-cementite nanocomposites (NC) revealed the step-wise increase in their resistance to pitting with an increase in the Fe 3 C Content (∼50 mass %) or with the formation of an ordered cementite network structure. The corrosion process is determined by the chemica...

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Bibliographic Details
Published in:Protection of metals 2008-07, Vol.44 (4), p.367-371
Main Authors: Syugaev, A. V., Lomaeva, S. F., Reshetnikov, S. M., Shuravin, A. S., Sharafeeva, E. F., Surnin, D. V.
Format: Article
Language:English
Subjects:
Activation
Activation analysis
Carbon
Characterization and Evaluation of Materials
Chemistry and Materials Science
Corrosion
Corrosion and Coatings
Corrosion prevention
Evolution
Industrial Chemistry/Chemical Engineering
Inorganic Chemistry
Materials Science
Metallic Materials
Nanocomposites
Nanoscale and Nanostructrured Materials and Coatinds
Pitting (corrosion)
Tribology
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Summary:Studies of the local activation of iron-cementite nanocomposites (NC) revealed the step-wise increase in their resistance to pitting with an increase in the Fe 3 C Content (∼50 mass %) or with the formation of an ordered cementite network structure. The corrosion process is determined by the chemical state of carbon, namely, free or bound into carbides. The free carbon evolution leads to depassivation and the transition to structure-selective corrosion
ISSN:0033-1732
1608-327X
DOI:10.1134/S0033173208040097