Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Fracture Characteristics of NiCr/ZrO2 Functionally Graded Material by Gas Burner Thermal Shock

가스버너 열충격에 의한 NiCr/ZrO2계 경사기능재의 열적 파괴특성

  • Song, Jun-Hee (The Research Center of Industrial Technology, Engineering Research Institute, Chonbuk National University)
  • 송준희 (전북대학교 공학연구원 공업기술연구센터)
  • Published : 2006.04.01
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Abstract

Joining Yittria Stabilized Zirconia (YSZ) to NiCr metal was fabricated using YSZ/NiCr Functionally Graded Materials (FGM) Interlayer by hot pressing process. Microscopic observations demonstrate that the composition and microstructure of YSZ/NiCr FGM distribute gradually in stepwise way, eliminating the macroscopic ceramic/metal interface such as that in traditional ceramic/metal joint. The thermal characteristics of this YSZ/FGM/NiCr joint were studied by thermal shock testing and therml barrier testing. Thermal shock test was conducted by gas burner rig. Acoustic Emission (AE) monitoring was performed to analyze the microfracture behavior during the thermal shock test. It could be confirmed that FGM was the excellent performance of thermal shock/barrier resistance at above $1000^{\circ}C$.

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References

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