Residual Stress Assessment in the Al2O3\Mullite Based Laminated System

Lorenzo Micele; Mylene Brach; Francis Chalvet; Goffredo  de Portu; Giuseppe Pezzotti

doi:10.4028/www.scientific.net/KEM.333.243

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 333Residual Stress Assessment in the Al2O3\Mullite...

Residual Stress Assessment in the Al₂O₃\Mullite Based Laminated System

Abstract:

To improve mechanical properties of mullite, a mullite-Al2O3\mullite laminate composite was prepared. Lamination generates residual stresses within the structure, measured by piezospectroscopy. A preliminary and complete piezo-spectroscopic characterization of the Al2O3\mullite system was carried out. A method to determine the concentration of Al2O3 in the composite by Raman spectrum was proposed and used to assess the composition of the laminated structure along the cross section. The experimental results evidenced a gradual change of composition and residual stress state between the two layer.

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Periodical:

Key Engineering Materials (Volume 333)

Pages:

243-246

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.333.243

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Online since:

March 2007

Authors:

Lorenzo Micele, Mylene Brach, Francis Chalvet, Goffredo de Portu, Giuseppe Pezzotti

Keywords:

Al₂O₃\Mullite Composite, Laminated Structure, Piezo-Spectroscopy, Raman Quantitative Analysis

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