PAUL, A., VAIDHYANATHAN, B. and BINNER, J., 2011. Micro-Raman spectroscopy of indentation induced phase transformation in nanozirconia ceramics. Advances in Applied Ceramics, 110 (2), pp. 114-119.
Micro-Raman spectroscopy has been employed as an effective technique to determine the phase transformations in nanostructured yttria stabilised zirconia (YSZ) ceramics with different yttria content. Samples have been prepared with varying mean grain sizes by a slip casting route followed by a microwave assisted two-step sintering cycle starting with aqueous nanozirconia suspensions. Indents were generated using a Vickers pyramidal indenter at different loads and the resulting phase transformations were mapped using micro-Raman spectroscopy. The results were compared to those of a commercial submicron 3YSZ. The amount of transformation was found to be much lower for nanozirconia compared to the submicron zirconia with similar yttria content.
This article was published in the journal Advances in Applied Ceramics, published by Maney: http://maney.co.uk/