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Characterization of residual compressive stresses in layered ceramics by positron annihilation spectroscopy

Journal of the European Ceramic Society, ISSN: 0955-2219, Vol: 32, Issue: 16, Page: 3989-3993
2012
  • 14
    Citations
  • 0
    Usage
  • 14
    Captures
  • 0
    Mentions
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Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    14
    • Citation Indexes
      14
  • Captures
    14

Article Description

Microstructural characterization of stress states of alumina layers subjected to residual compressive stresses was performed by positron annihilation spectroscopy (PAS). Al 2 O 3 –t-ZrO 2 three layered samples were appropriately designed and processed by sequential slip casting with symmetric structure. The zirconia contents inside the core layer were selected in order to generate compressive stresses of variable intensity in the outer Al 2 O 3 layers. PAS results highlighted a correlation between positron annihilation parameters and microstructural changes related to the generation of residual stresses.

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