Mechanical behavior and ultrasonic non-destructive characterization of elastic properties of cordierite-based ceramics

Abstract : The structural and morphological evolutions of cordierite-based ceramics produced from stevensite/andalusite mixture sintered from 1150 to 1350 °C were studied using X-ray diffraction (XRD) and scanning electron microscopy (SEM). The mechanical behavior was investigated by three-point bending and Brazilian tests. The elastic properties were evaluated using ultrasonic non-destructive testing (NDT). XRD results revealed that the main crystalline phase formed at 1300 and 1350 °C was cordierite with traces of mullite. A linear-elastic behavior followed by brittle fracture was observed in three-point bending test with the presence of multiple discontinuities. Flexural and diametral compression strength values of cordierite sintered at 1300 °C were 39.4±4 and 21.8±2 MPa, respectively. The elastic properties such as Young's modulus (38.7–45.1 GPa), shear modulus (17.90–19.42 GPa) and Poisson ratio (0.08–1.6) of cordierite-based ceramics produced at 1350 and 1300 °C were also determined.
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https://hal-unilim.archives-ouvertes.fr/hal-01115578
Contributeur : Fabrice Rossignol <>
Soumis le : mercredi 11 février 2015 - 12:26:39
Dernière modification le : vendredi 9 août 2019 - 15:18:06

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A. Benhammou, Y. El Hafiane, L. Nibou, A. Yaacoubi, Julien Soro, et al.. Mechanical behavior and ultrasonic non-destructive characterization of elastic properties of cordierite-based ceramics. Ceramics International, Elsevier, 2013, 39 (1), pp.21-27. ⟨10.1016/j.ceramint.2012.06.061⟩. ⟨hal-01115578⟩

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