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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Veröffentlicht in:	Protection of metals 2008-07, Vol.44 (4), p.367-371
Hauptverfasser:	Syugaev, A. V., Lomaeva, S. F., Reshetnikov, S. M., Shuravin, A. S., Sharafeeva, E. F., Surnin, D. V.
Format:	Artikel
Sprache:	eng
Schlagworte:	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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Beschreibung
Zusammenfassung:	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 2070-2051 1608-327X 2070-206X
DOI:	10.1134/S0033173208040097