Universität zu Köln

Tyurin, Aleksandr Georgievich, Manannikov, Dmitriy Andreevich, Parshukov, Vladimir Pavlovich, Antonova, Anna Valeryevna and Nikolaychuk, Pavel Anatolyevich ORCID: 0000-0003-0335-3955 (2016). Method of estimation of corrosion stability of multicomponent alloys using equilibrium and polarization potential - pH diagrams. Anti-Corros. Methods Mater., 63 (5). S. 386 - 398. BINGLEY: EMERALD GROUP PUBLISHING LTD. ISSN 1758-4221

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Abstract

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.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Tyurin, Aleksandr Georgievich UNSPECIFIED UNSPECIFIED UNSPECIFIED Manannikov, Dmitriy Andreevich UNSPECIFIED UNSPECIFIED UNSPECIFIED Parshukov, Vladimir Pavlovich UNSPECIFIED UNSPECIFIED UNSPECIFIED Antonova, Anna Valeryevna UNSPECIFIED UNSPECIFIED UNSPECIFIED Nikolaychuk, Pavel Anatolyevich UNSPECIFIED orcid.org/0000-0003-0335-3955 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-292245
DOI:	10.1108/ACMM-12-2014-1479
Journal or Publication Title:	Anti-Corros. Methods Mater.
Volume:	63
Number:	5
Page Range:	S. 386 - 398
Date:	2016
Publisher:	EMERALD GROUP PUBLISHING LTD
Place of Publication:	BINGLEY
ISSN:	1758-4221
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language COUPLED PHASE-DIAGRAMS; METAL BINARY-SYSTEMS; ELECTROCHEMICAL-BEHAVIOR; THERMODYNAMIC EVALUATION; THERMOCHEMICAL DATA; SEA-WATER; COPPER; SOLUBILITY; IRON; TEMPERATURE Multiple languages Metallurgy & Metallurgical Engineering Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/29224