Published 1982 | Version v1
Journal article Metadata-only

Chemical aspects of lodine-induced stress corrosion cracking of Zircaloys

Creators

  • 1. EPRI, Palo Alto, CA, USA

Description

The thermodynamics of the zirconium-iodine system are summarized. Thermodynamic information for iodine chemisorbed on zirconium surfaces is also presented. These thermochemical results are used to analyze chemical behavior in situations related to stress corrosion cracking (SCC). Cracking initiation sites in commercial Zircaloy tubing were found to be associated with impurities (iron, aluminum, silicon, and chromium) in the Zircaloy surface in microsurface examination of failures produced in iodine-induced SCC tests. It is suggested that the impurity site may react with iodine to form a locally embrittled region that fails under stress and acts as a crack initiator

Additional details

Publishing Information

Journal Title
Am. Soc. Test. Mater., Spec. Tech. Publ.
Journal Issue
p. 146-157
Series
Am. Soc. Test. Mater., Spec. Tech. Publ.
ISSN
0066-0558

Conference

Title
5. international conference on zirconium in the nuclear industry.
Dates
4-7 Aug 1980.
Place
Boston, MA (USA).

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
14786303
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; S22: GENERAL STUDIES OF NUCLEAR REACTORS;
Resource subtype / Literary indicator
Conference
Descriptors DEI
CESIUM IODIDES; CHEMISORPTION; CORROSION; CRACKS; FUEL CANS; IMPURITIES; IODINE; STRESS CORROSION; THERMODYNAMICS; TUBES; URANIUM DIOXIDE; ZIRCALOY; ZIRCONIUM IODIDES
Descriptors DEC
ACTINIDE COMPOUNDS; ALKALI METAL COMPOUNDS; ALLOYS; CESIUM COMPOUNDS; CHALCOGENIDES; CHEMICAL REACTIONS; ELEMENTS; HALIDES; HALOGEN COMPOUNDS; HALOGENS; INORGANIC PHOSPHORS; IODIDES; IODINE COMPOUNDS; NONMETALS; OXIDES; OXYGEN COMPOUNDS; PHOSPHORS; SEPARATION PROCESSES; TIN ALLOYS; TRANSITION ELEMENT ALLOYS; TRANSITION ELEMENT COMPOUNDS; URANIUM COMPOUNDS; URANIUM OXIDES; ZIRCONIUM ALLOYS; ZIRCONIUM BASE ALLOYS; ZIRCONIUM COMPOUNDS

Optional Information

Secondary number(s)
CONF-800834--.