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Neutron Diffraction Study of the Pseudo-Macro Residual Stresses in ZrO2(CeO2)/Al2O3 Ceramic Composites

  • Xun-Li Wang (a1), C. R. Hubbard (a1), K. B. Alexander (a1), P. F. Becher (a1), J. A. Fernandez-Baca (a2) and S. Spooner (a2)...

Abstract

Neutron powder diffraction techniques have been used to characterize the pseudo-macro (PM) residual stresses in ZrO2(CeO2)/Al2O3 ceramic composites as a function of ZrO2(CeO2) volume fraction and fabrication procedures. The diffraction data were analyzed using the Rietveld structure refinement technique. From the refinement, we found that the CeO2 stabilized tetragonal ZrO2 particles were in tension and the Al2O3 matrix was in compression. Different sintering time had little impact on the PM stresses. On the other hand, the magnitude of the PM stresses in both ZrO2 and Al2O3 decreased linearly with the increase of their volume fractions.

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References

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6. Fernandez-Baca, J. A., unpublished.
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Powder Diffraction
  • ISSN: -
  • EISSN: 2631-3626
  • URL: /core/journals/powder-diffraction
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