The Mechanism of Transpassive Dissolution of AISI 321 Stainless Steel in Sulphuric Acid Solution
Joint Authors
Fattah-alhosseini, A.
Attarzadeh, N.
Source
International Journal of Electrochemistry
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2010-12-05
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
The transpassive dissolution mechanism of AISI 321 stainless steel in a 0.5 M sulphate solution was studied using electrochemical impedance spectroscopy (EIS).
On the basis of the experimental results, surface charge approach, and point defect model, a kinetic model of the transpassive dissolution process is proposed.
The transpassive film is modeled as a highly doped n-type semiconductor—insulator-p-type semiconductor structure.
Injection of negative defects at the transpassive film/solution interface results in their accumulation as a negative surface charge.
It alters the nonstationary transpassive film growth rate controlled by the transport of positive defects (oxygen vacancies).
The model describes the process as dissolution of Cr as Cr (VI) and Fe as Fe (III) through the transpassive film via parallel reaction paths.
American Psychological Association (APA)
Fattah-alhosseini, A.& Attarzadeh, N.. 2010. The Mechanism of Transpassive Dissolution of AISI 321 Stainless Steel in Sulphuric Acid Solution. International Journal of Electrochemistry،Vol. 2011, no. 2011, pp.1-9.
https://search.emarefa.net/detail/BIM-478341
Modern Language Association (MLA)
Fattah-alhosseini, A.& Attarzadeh, N.. The Mechanism of Transpassive Dissolution of AISI 321 Stainless Steel in Sulphuric Acid Solution. International Journal of Electrochemistry No. 2011 (2011), pp.1-9.
https://search.emarefa.net/detail/BIM-478341
American Medical Association (AMA)
Fattah-alhosseini, A.& Attarzadeh, N.. The Mechanism of Transpassive Dissolution of AISI 321 Stainless Steel in Sulphuric Acid Solution. International Journal of Electrochemistry. 2010. Vol. 2011, no. 2011, pp.1-9.
https://search.emarefa.net/detail/BIM-478341
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-478341