ChemInform Abstract: THE NATURE OF THE PASSIVE FILM ON IRON. II. AC IMPEDANCE STUDIES

Cahan, B. D.; Chen, C.-T.

doi:10.1002/chin.198227025

Cited by 1 publication

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“…They could be subdivided into two categoriesmodels explaining the electric properties of passive films by their composition and structure and those emphasising the transport of mass and charge in the film [5]. To the first group belong the semiconductor models [14] (metallic conductivity of the inner Fe 3 O 4 layer of the film and semiconductor or insulator behaviour of the outer Fe 2 O 3 layer) and chemi-conductor models [15] (single phase insulator influenced by oxidative and reductive changes of the valence state). The methods of the second group differ by the consideration of the electric field strength in the oxide film, what is reflected in the mathematical treatment of the transport.…”

Section: Numerical Models Of Potentiodynamic Diagramsmentioning

confidence: 99%

Assessment of Steel Reinforcement Corrosion State by Parameters of Potentiodynamic Diagrams

Krajči

Jerga²

2015

Civil and Environmental Engineering

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The environment of the steel reinforcement has a significant impact on the durability and service life of a concrete structure. It is not only the presence of aggressive substances from the environment, but also the own composition of concrete mixture. The use of new types of cements, additives and admixtures must be preceded by verification, if they themselves shall not initiate the corrosion. There is a need for closer physical expression of the parameters of the potentiodynamic diagrams allowing reliable assessment of the influence of the surrounding environment on electrochemical behaviour of reinforcement. The analysis of zero retardation limits of potentiodynamic curves is presented.

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Section: Numerical Models Of Potentiodynamic Diagramsmentioning

confidence: 99%