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Estimation of Static Fatigue Behavior of Ceramic Materials as Candidate Overpack Materials

Published online by Cambridge University Press:  25 February 2011

Masamichi Obata ,
Akira Honda ,
Hirohisa Ishikawa  and
Tadashi Mano
Masamichi Obata
Affiliation:
NGK Insulators, LTD., Aichi, JAPAN
Akira Honda
Affiliation:
Power Reactor and Nuclear Fuel Development Corporation, Tokai, Ibaraki, JAPAN
Hirohisa Ishikawa
Affiliation:
Power Reactor and Nuclear Fuel Development Corporation, Tokai, Ibaraki, JAPAN
Tadashi Mano
Affiliation:
Power Reactor and Nuclear Fuel Development Corporation, Tokai, Ibaraki, JAPAN
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Abstract

Static fatigue behavior is one of the important factors for life prediciton of ceramic materials. In this study, SCG (slow crack growth) parameters were measured under atmosphere conditions, and the static fatigue behavior of alumina, PSZ (partially stabilized zirconia), and titanium oxide was examined.

According to the results of the evaluatin of the static fatigue behavior, the destruction probability after 1,000 years would be less than 1/40,000 when tensile stresses occurring in the material were less than 79.4, 241.3, 8.0 MPa for alumina, PSZ, and titanium oxide, respectively. However titanium oxide could not be used because of the wall thickness that would be needed to accomplish this stress. The life prediction method includes only tht effect of preexisting flaws so the method to estimate the effect of localized corrosion is required for the future examination of the application of ceramic materials.

Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 333: Symposium V – Scientific Basis for Nuclear Waste Management XVII , 1993 , 961
Copyright
Copyright © Materials Research Society 1994

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References

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