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Mechanical integrity of yttria-stabilised zirconia doped with Np oxide

Published online by Cambridge University Press:  21 March 2011

Hajime Kinoshita ,
Ken-ichi Kuramoto ,
Masayoshi Uno ,
Shinsuke Yamanaka ,
Hisayoshi Mitamura  and
Tsunetaka Banba
Hajime Kinoshita
Affiliation:
Department of Nuclear Engineering, Osaka University, Suita, Osaka 565-0871, Japan
Ken-ichi Kuramoto
Affiliation:
Department of Nuclear Energy System, Japan Atomic Energy Research Institute, Tokai-mura, Ibaraki 319-1195, Japan
Masayoshi Uno
Affiliation:
Department of Nuclear Engineering, Osaka University, Suita, Osaka 565-0871, Japan
Shinsuke Yamanaka
Affiliation:
Department of Nuclear Engineering, Osaka University, Suita, Osaka 565-0871, Japan
Hisayoshi Mitamura
Affiliation:
Department of Environmental Sciences, Japan Atomic Energy Research Institute, Tokai-mura, Ibaraki 319-1195, Japan
Tsunetaka Banba
Affiliation:
Department of Environmental Sciences, Japan Atomic Energy Research Institute, Tokai-mura, Ibaraki 319-1195, Japan
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Abstract

Mechanical properties of YSZ doped with Np oxide were studied to investigate the sufficiency to be a waste form for immobilisation of highly concentrated TRU. The study was conducted focusing on Vickers (HV) and Knoop (HK) hardness, Young's modulus (E) and fracture toughness (KIC). The results showed that YSZ is harder and more resistant to elastic deformation and crack development than such waste forms as borosilicate glass and synroc. The effects of porosity and Np content on HV, HK, E and KIC are also discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 932: Symposium – Scientific Basis for Nuclear Waste Management XXIX , 2006 , 52.1
Copyright
Copyright © Materials Research Society 2006

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References

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