Sinter-forging of nanocrystalline TiO2

H. J. Hofler, R. S. Averback

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Sinter-forging experiments were performed on cylindrical samples of n-TiO2 at various stresses and temperatures and with varying initial densities. The results are described on the basis of a constitutive law similar to creep deformation of dense bodies. The activation enthalpy measured is consisted with a grain boundary diffusion limited process, whereas the stress exponent found excludes simple diffusional creep. Furthermore, a threshold stress was found to exist. The results are discussed in terms of existing models and it is shown that the threshold stress can be explained in terms of the creation of additional surface area due to grain boundary sliding.

Original languageEnglish (US)
Title of host publicationMaterials Research Society Symposium Proceedings
PublisherPubl by Materials Research Society
Number of pages6
ISBN (Print)1558991816
StatePublished - 1993
EventProceedings of the 3rd Biennial Meeting of Chemical Perspectives of Microelectronic Materials - Boston, MA, USA
Duration: Nov 30 1992Dec 3 1992

Publication series

NameMaterials Research Society Symposium Proceedings
ISSN (Print)0272-9172


OtherProceedings of the 3rd Biennial Meeting of Chemical Perspectives of Microelectronic Materials
CityBoston, MA, USA

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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