1. Corrosion resistance

1.1 Passivity

The phenomenon of passivity is extremely important, as it forms the basis of the corrosion resistance mechanism of stainless steels. The phenomenon of passivity is characterized by the presence of a very thin film (thickness of the order of 10 to 20 nm), known as a passive film or passive layer, on the surface of the metal alloy, making its corrosion rate negligible. The passive film, which is firmly attached to the metal substrate, prevents or minimizes contact between the alloy and more or less aggressive agents in the surrounding environment.

For the passivity phenomenon to be established and maintained, the iron-chromium alloy must have a minimum chromium content of around 11%. In other words, there is a threshold effect above which passivity...

You do not have access to this resource.

Exclusive to subscribers. 97% yet to be discovered!

You do not have access to this resource.
Click here to request your free trial access!

Already subscribed? Log in!

The Ultimate Scientific and Technical Reference

A Comprehensive Knowledge Base, with over 1,200 authors and 100 scientific advisors

+ More than 10,000 articles and 1,000 how-to sheets, over 800 new or updated articles every year

From design to prototyping, right through to industrialization, the reference for securing the development of your industrial projects

This article is included in

Corrosion - Aging

This offer includes:

Knowledge Base

Updated and enriched with articles validated by our scientific committees

Services

A set of exclusive tools to complement the resources

Practical Path

Operational and didactic, to guarantee the acquisition of transversal skills

Doc & Quiz

Interactive articles with quizzes, for constructive reading

Subscribe now!

Ongoing reading
Corrosion resistance

Previous
page Stainless steels - Properties. Corrosion resistance

Physical and mechanical properties

Bibliography

(1) - TALBOT (J.) - Les éléments chimiques et les hommes. - 1995, SIRPE Éditeur, France.
(2) - GUILLET (L.) - Rev. Met. 1904,-1-155, 1905 -2-350, 1906-3-372.
(3) - PORTEVIN...

Standardization

French Standards Association (AFNOR)

Définition et classification des aciers (A 02-025) - NF EN 10020 - 09-00
Aciers inoxydables. Partie 1 : liste des aciers inoxydables (A 35-572-1) - NF EN 10088-1 - 09-05
Aciers inoxydables. Partie 2 : conditions techniques de livraison des tôles et bandes en acier de résistance à la corrosion pour usage général. (2e tirage, avril 1997) (A 35-573-2) - NF EN 10088-2...