Passivation and local activation of α-Fe + MeC + Fe3C (Me = Ti, V, or Nb) nanocrystalline composites in neutral environments

被引：0

作者：

A. V. Syugaev

S. F. Lomaeva

N. V. Lyalina

S. M. Reshetnikov

机构：

[1] Russian Academy of Sciences,Physical Technical Institute, Ural Branch

[2] Udmurt State University,undefined

来源：

Protection of Metals and Physical Chemistry of Surfaces | 2013年 / 49卷

关键词：

Carbide; Cementite; Mixed Oxide; Passive Film; Ferrite Phase;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The electrochemical behavior of α-Fe + MeC + Fe3C (Me = Ti, V, or Nb) nanocrystalline carbide-steel analogs, which were produced by mechanical activation in an organic environment followed by compaction, is studied. Passivation of the composites in borate solutions is found to be determined by the formation of FeO · xTiO2, FeO · xNb2O5, and FeO · xV2O3 (FeO · xVO2) mixed oxides, which substantially increase the resistance against oxidation at potentials of the active dissolution of ferrite phase. Resistance against local activation increases with an increase in the content of MeC and Fe3C carbide phases.

引用

页码：209 / 215

页数：6

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