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Compressive creep of ultrafine grained MgO polycrystals

Authors
  • Crampon, J.
  • Chaklader, A.C.D.
  • Escaig, B.
Publication Date
Jan 01, 1976
Source
HAL
Keywords
Language
English
License
Unknown
External links

Abstract

Steady state compressive creep of ultrafine-grained MgO has been studied in the temperature range 0.3 to 0.38 Tm. The specimens were fabricated by reactive hot pressing i.e. by hot-pressing of Mg(OH)2 during the decomposition reaction, which produced dense specimens (90 % of the theoretical density) with 1 000 Å average grain size. The value of the stress exponent was found to be unity and the activation enthalpy was of the order of 36 kcal/mole.

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