High Burnup Fuel Cladding Materials R and D for Advanced Nuclear Systems

Akihiko Kimura, Han Sik Cho, Naoki Toda, Ryuta Kasada, Kentaro Yutani, Hirotatsu Kishimoto, Noriyuki Iwata, Shigeharu Ukai, Masayuki Fujiwara

Research output: Contribution to journalArticlepeer-review

95 Citations (Scopus)


Cladding materials development is crucial to realize highly efficient and high-burnup operation over 100GWd/t of so called Generation IV nuclear energy systems, such as supercritical-water-cooled reactor (SCWR) and lead-cooled fast reactor (LFR). Oxide dispersion strengthening (ODS) ferritic/martensitic steels, which contain 9–12%Cr, show rather high resistance to neutron irradiation embrittlement and high strength at elevated temperatures. However, their corrosion resistanceis not good enough in SCW and in lead at high temperatures. Inorder to improve corrosion resistance of the ODS steels in such environment, high-Cr ODS steels have been developed at Kyoto University. An increase in Cr content resulted in a drastic improvement of corrosion resistance in SCW and in lead, while it was expected to cause an enhancement of aging embrittlement as well as irradiation embrittlement. Anisotropy in tensile properties is another issue. In order to overwhelm these issues, surveillance tests of the material performance have been performed for high Cr-ODS steels produced by new processing technologies. It is demonstrated that high-Cr ODS steels have a high potential as fuel cladding materials for SCWR and LFR with high efficiency and high burnup.

Original languageEnglish
Pages (from-to)323-328
Number of pages6
Journaljournal of nuclear science and technology
Issue number3
Publication statusPublished - 2007 Mar
Externally publishedYes


  • Fuel claddings
  • High burnup
  • High corrosion resistance
  • High efficiency
  • Irradiation effects
  • Lead-cooled fast reactor
  • Nanosized oxide particles
  • Super ODS ferritic steel
  • Supercriticalwater-cooled reactor

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering


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