Impression Creep in TBC and Advanced Ceramics Materials

Abstract:

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The indentation creep of free-standing Y-ZrO2 layer and 20Sc-60Si-20Mg-80O-20N oxynitride glass has been investigated. Creep experiment has been performed with flat cylindrical indenter (hot pressed SiC) in the temperature range from 860 °C to 1300 °C at the loads from 20 to 100 MPa. The strain-time relationship was registered and the creep exponent and activation energy of creep have been calculated. The microstructure changes have been observed and documented. Viscosity as a function of temperature and the glass transition temperature (Tg) were determined in oxynitride glass and compared with values from compressive creep.

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Periodical:

Edited by:

Marc Anglada et al.

Pages:

281-284

DOI:

10.4028/www.scientific.net/KEM.333.281

Citation:

F. Dorčáková et al., "Impression Creep in TBC and Advanced Ceramics Materials", Key Engineering Materials, Vol. 333, pp. 281-284, 2007

Online since:

March 2007

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$35.00

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