Gozfejleszto hoátadó csövek korróziós állapotának tematikus vizsgálata, II. A csofelületek kémiai összetétele és struktúrája

Translated title of the contribution: Comprehensive investigation of the corrosion state of the heat exchanger tubes of steam generators, Part II. Chemical composition and structure of tube surfaces

Zoltán Homonnay, Erno Kuzmann, Sándor Stichleutner, Éva Kristófné Makó, Kálmán Varga, Zoltán Németh, Andrea Szabó, Péter Tilky, János Schunk, Gábor Patek

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Within the frame of a project dealing with the comprehensive study of the corrosion state of the steam generators of the Paks NPP, surface properties (chemical and phase compositions) of the heat exchanger tubes supplied by the power plant were studied. Comparative analysis of the chemical structure of the outside and inside surfaces of heat exchanger tubes reveals that the main constituents of the protective oxide layer are magnetite, hematite as well as amorphous Fe(OH)3. The relative amount of the above constituents is decisively related to the general corrosion state of the surfaces. From the investigation of the samples undergone γ → α phase transition, no adequate relationship between the presence (and extent) of the phase transition and the general corrosion state of the surfaces can be identified.

Original languageHungarian
Pages (from-to)449-454
Number of pages6
JournalMagyar Kemiai Folyoirat, Kemiai Kozlemenyek
Volume108
Issue number10
Publication statusPublished - Oct 1 2002

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ASJC Scopus subject areas

  • Chemistry(all)

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