Effect of peptization on densification and phase transformation behaviour of sol-gel-derived nanostructured titania

Krishnankutty-Nair P. Kumar, K.N.P. Kumar, Jalajakumari Kumar, Klaas Keizer

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Porosity reduction, packing, pore-size distribution, and anatase to rutile phase transformation behavior of nanostructured titania ceramics prepared from both peptized and unpeptized sols were studied and compared using XRD, DSC, and nitrogen-gas physisorption techniques. Precursor gels prepared from the peptized sol had a green density of about 70% after drying at 40°C, whereas the samples prepared from the unpeptized sol had a green density of only 50%. Samples prepared from the peptized sol showed higher sintering and phase transformation rates compared to the unpeptized sols.
Original languageUndefined
Pages (from-to)1396-1400
Number of pages5
JournalJournal of the American Ceramic Society
Issue number77
Publication statusPublished - 1994


  • IR-71069
  • METIS-106866

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