Method of estimation of corrosion stability of multicomponent alloys using equilibrium and polarization potential – pH diagramsстатья
Исследовательская статья
Информация о цитировании статьи получена из
Web of Science ,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 16 января 2019 г.
Авторы:
Tyurin A.G. ,
Manannikov D.A. ,
Parshukov V.P. ,
Antonova A.V. ,
Nikolaychuk P.A.
Журнал:
Anti-Corrosion Methods and Materials
Том:
63
Номер:
5
Год издания:
2016
Издательство:
Emerald Group Publishing Ltd.
Местоположение издательства:
United Kingdom
Первая страница:
386
Последняя страница:
397
DOI:
10.1108/ACMM-12-2014-1479
Аннотация:
Purpose: The purpose of this study is to develop a method of thermodynamic and kinetic evaluation of corrosion properties of alloys. Design/methodology/approach: Method of estimation of corrosion-electrochemical behaviour of multicomponent alloys is proposed. The method takes into account both thermodynamic and kinetic data and is based on mutual construction of equilibrium and polarization potential – pH diagrams. The usage of the proposed method is illustrated in the example of the structural steel 20KT. Findings: Passivation of steel 20KT is determined by formation of oxide film based on magnetite (Fe3O4); silicon, manganese and copper oxides as well as manganese sulphides can be locally included into the inner side of the passivation layer. An experimental potential – pH diagram of steel 20KT is constructed. Interpreting the results of polarization measurements revealed good agreement between equilibrium and polarization potential – pH diagrams. Originality/value: It is shown in the example of structural steel 20KT that for interpretation of experimental potential – pH diagrams, one should compare them with corresponding equilibrium diagrams for multicomponent alloys rather than with Pourbaix diagrams for pure metals. The corrosion properties of steel 20KT are estimated using equilibrium and polarization potential – pH diagrams. © 2016, © Emerald Group Publishing Limited.
Добавил в систему:
Николайчук Павел Анатольевич