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- W1999803693 abstract "Youngs moduli of talc-based ceramics from the system MgO-Al 2 O 3 -SiO 2 are measured for temperatures up to 1000 °C via impulse excitation. It is shown that, after pressing at 50 MPa and firing at 1280 °C, MgO-rich compositions exhibit higher porosity and lower Youngs moduli (approximately 2030 % lower than predicted via micromechanical relations). The Young moduli of materials with less MgO decrease with temperature, but those of MgO-rich ceramics increase with temperature and exhibit a large hysteresis between heating and cooling. Lower absolute values are mainly due to increased porosity, but the reason for the modulus increase with temperature and the hysteresis is the higher enstatite content in the MgO-rich compositions. For a special composition the Youngs moduli are more or less temperature-independent and without significant hysteresis effects, probably due to the low content of enstatite and the high content of sapphirine." @default.
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- W1999803693 date "2013-11-01" @default.
- W1999803693 modified "2023-10-16" @default.
- W1999803693 title "High-Temperature Elastic Properties of Ceramics in the System MgO-Al<sub>2</sub>O<sub>3</sub>-SiO<sub>2</sub> Measured by Impulse Excitation" @default.
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- W1999803693 doi "https://doi.org/10.4028/www.scientific.net/kem.592-593.696" @default.
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