Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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A Study on the Ceria Stabilized Tetragonal Zirconia Polycrystals(Ce-TZP)(II) : Mechanical Properties of Ce-TZP and its Fracture Behavior at Elevated Temperature

CeO2 안정화 정방정 Zirconia 다결정체(Ce-TZP)에 관한 연구(II) : Ce-TZP의 고온 기계적 성질과 파괴거동의 변화

  • Published : 1989.06.01
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Abstract

The high-temperature strength of Ce-TZP was measured at 200, 650 and 100$0^{\circ}C$ by 4-point bending test. And its fracture behavior was observed by SEM. Below $650^{\circ}C$ of the temperature, where monoclinic fraction was almost zero, the decreasing rate of bending strength was relatively slow, but above this temperature, high temperature strength was largely decreased as a result of the decrease of stress-induced transformation of zirconia. The observation of fracture surface bended at 100$0^{\circ}C$ indicated that the fracture mode changed from intergranular-into transgranular-form with regardless of ceria contents.

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