506 Zr イオン照射した 3Y-TZP の焼鈍および高温曲げ変形後の微視組織観察

概要

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The superplastic ceramic have potential ability for applications to atomic energy fields. Up to date, however, as far as we know, there have been few studies concerning the effects of irradiations on the properties of the superplastic ceramics. In this study, the effects of Zr ion irradiation on the mechanical properties of a typical superplastic ceramic 3mol% yttia containing tetragonal zirconia polycrystals (3Y-TZP) were examined and discussed. The specimens were irradiated by (Zr)^<11+> ions with 130MeV at fluence level of 3.5×(10)^<12> and 2.1×(10)^<13> ions/(cm)^2 in the TANDEM accelerator at Tokai Reasearch Establishment of JAERI. Microstructures after annealing and bending to fracture of Zr ion irradiated 3Y-TZP were examined at elevated temperatures. It was found that grain boundaries cohesion became relatevely weak in irradiated surface region. The influence of Zr ion irradiation on the mechanical properties almost disappeared when the irradiated 3Y-TZP was subsequently heated at 1000K.
一般社団法人日本機械学会の論文
2003-09-19