High-temperature steam oxidation kinetics and mechanism of SCWR fuel cladding candidate materials

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Effects of temperature, dissolved oxygen (DO), and degree of cold work (CW) on the oxidation kinetics of supercritical-water-cooled reactor (SCWR) fuel cladding candidate materials, including three types of 15Cr-20Ni austenitic stainless steels (1520 SSs), in superheated steam have been investigated assuming power-law kinetics. Characteristics of oxide layers and its relation to oxidation behaviors are also discussed. The effect of DO on the weight gain behavior in superheated steam at 700 °C was minor for all specimens at least up to 200 ppb DO. The tube-shaped specimens of 1520 SSs showed very good oxidation resistance at 700-780 °C. There was no clear difference in the oxidation kinetics among the three investigated types of 1520 SSs. The degree of CW is a significant parameter to mitigate oxidation in superheated steam. It has been suggested that the tube specimens showed a very slow oxidation kinetics since Cr diffusion in the outside surface of the tubes is accelerated as a result of an increase of dislocation density and/or grain refinement by a high degree of CW.

Original languageEnglish
Title of host publicationPlant Operations, Maintenance, Engineering, Modifications, Life Cycle and Balance of Plant; Nuclear Fuel and Materials; Radiation Protection and Nuclear Technology Applications
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Print)9780791855782
DOIs
Publication statusPublished - 2013 Jan 1
Event2013 21st International Conference on Nuclear Engineering, ICONE 2013 - Chengdu, China
Duration: 2013 Jul 292013 Aug 2

Publication series

NameInternational Conference on Nuclear Engineering, Proceedings, ICONE
Volume1

Other

Other2013 21st International Conference on Nuclear Engineering, ICONE 2013
CountryChina
CityChengdu
Period13/7/2913/8/2

ASJC Scopus subject areas

  • Nuclear Energy and Engineering

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